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  • 1
    Electronic Resource
    Electronic Resource
    Preparation and electrodeposition properties of trimethylolpropane-toluene diisocyanate-dimethylaminoethanol/2-ethylhexanol resins (1992)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 45 (1992), S. 1055-1063 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: 2,4-Toluene diisocyanate (TDI) was partially blocked with equimolar mixtures of dimethylaminoethanol (DMAE) and 2-ethylhexanol (2EH) of different ratios to form the DMAE/2EH half-blocked TDIs, which were subsequently reacted with 1/3 mol trimethylolpropane (TMP) to yield the trimethylolpropane-toluene diisocyanate-dimethylaminoethanol/2-ethylhexanol (TMP-TDI-DMAE/2EH) resins having various content of tertiary amine groups. These resins were neutralized with acetic acid and then dispersed in deionized water, resulting in the milky emulsions used for cationic electrodeposition. Some electrodeposition properties, such as deposition yield, conductivity, rupture voltage, and throwing power, of the resins were investigated. In addition, one of the obtained resins (added as a crosslinker) and an amine-epoxy adduct were codispersed in deionized water, and the nature of electrodeposition of the two-component emulsion is discussed.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1992.070450615
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  • 2
    Electronic Resource
    Electronic Resource
    FTIR analysis of electrodeposition film from emulsion of two cationic resins (1992)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 46 (1992), S. 965-971 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The resin composition of film deposited from coemulsion of two cationic resins (epoxy-amine adduct, E, was the main resin; cationic trimethylolpropane-toluene diisocyanate-dimethylaminoethanol/2-ethylhexanol resin, T, was used as crosslinker) was determined by Fourier Transform Infrared (FTIR) quantitative analysis. The electrodeposition properties of cationic resins and their coemulsions were compared to study the effects of resin composition of coemulsions on the resin composition of deposited films. The optimum resin composition of coemulsions was also found to produce deposited film with the best properties after curing.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1992.070460604
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  • 3
    Electronic Resource
    Electronic Resource
    Coemulsion and electrodeposition properties of mixtures of cationic epoxy resin and cationic acrylic resin containing butoxymethylamide groups (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 50 (1993), S. 469-476 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Butyl acrylate, styrene, N,N-dimethylaminoethylmethacrylate, and N-(n-butoxymethyl) acrylamide were copolymerized to prepare a cationic acrylic copolymer (I) containing butoxymethylamide groups. This copolymer can be mixed with an epoxy-amine adduct (II), acetic acid, and deionized (D.I.) water to form a coemulsion containing two cationic resins. The electrophoretic codeposition of the coemulsion and physical and chemical properties of the deposited film were investigated. The resin composition of film deposited from coemulsion was determined by Fourier transform Infrared (FTIR) quantitative analysis to study the coemulsion and electrophoretic codeposition behavior. The applicability of this two-component coemulsion in primer-surfacer (pricer) electrodeposition paint was also discussed. The results indicate that at any coemulsion resin composition the resin composition of electrodeposited film is almost equal to the coemulsion resin composition. The throwing power of emulsion increases with increasing applied voltage, as expected. However, the throwing power of coemulsion is almost equal to that of the II emulsion but greater than that of the I emulsion. Furthermore, all cured films derived from mixtures of I/II show excellent adhesive strength, good hardness, and high levels of salt spray resistance. © 1993 John Wiley & Sons, Inc.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1993.070500310
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  • 4
    Electronic Resource
    Electronic Resource
    Emulsification and electrodeposition of mixtures of cationic resins. I. Cationic resin and nonionic cross-linker (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 47 (1993), S. 2217-2225 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The emulsification and electrodeposition properties of two resins system (cationic epoxyamine adduct, III, was the main resin; nonionic trimethylolpropane-toluene diisocyanate-2-ethylhexanol resin, II, was used as cross-linker) were investigated and the compositions of their electrodeposited films were obtained by Fourier transform infrared (FTIR) quantitative analysis to study the coemulsion and electrophoretic behaviors. The optimum resin compositionof coemulsion was also found to provide the deposited film having the best properties. The results indicate that the molecules of nonionic cross-linker II are entangled by the ones of cationic resin III during the dispersion process and they can be codeposited on the cathodic substrate after a voltage has been applied. Moreover, at the condition of stable coemulsion of the two-component system, the resin composition of electrodeposited film is almost equal to the resin composition of the coemulsion and is not affected by the applied voltage or resin concentration. © 1993 John Wiley & Sons, Inc.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1993.070471216
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  • 5
    Electronic Resource
    Electronic Resource
    Coemulsion and electrodeposition properties of mixtures of polyoxypropylene-modified cationic epoxy resin and nonionic trimethylolpropane-toluene diisocyanate-2-ethylhexanol crosslinker (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 49 (1993), S. 1031-1039 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The emulsification and electrodeposition properties of mixtures of polyoxypropylene-(POP) modified cationic epoxy resin (III) and nonionic trimethylolpropane-toluene diisocyanate-2-ethylhexanol (TMP-TDI-2EH, V) were investigated and the compositions of their electrodeposited films were obtained by Fourier Transform Infrared (FTIR) quantitative analysis to study the effects of “soft segment” (oxypropylene groups) contained in resin III on the coemulsion and electrophoretic behavior. The results indicate that the deposition yield and throwing power of emulsion of resin III are highly dependent on its average molecular weight (Mw). Resin III with higher Mw has higher deposition yield but lower throwing power. Moreover, the deposition yield of V/III coemulsion also increases with increasing the Mw of III. On the other hand, the throwing power of V/III coemulsion is not related to the Mw of III but is influenced by the amount of soft segments in III. Increasing soft segment content in III increases the throwing power of the coemulsion. Furthermore, at the conditions providing stable coemulsion, the composition of the electrodeposited film is almost equal to the resin composition of the coemulsion. © 1993 John Wiley & Sons, Inc.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1993.070490609
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  • 6
    Electronic Resource
    Electronic Resource
    Syntheses and properties of cationic amine-epoxy adducts and their use in electrodeposition: I. Diethanolamine/diethylamine terminated cationic epoxy with pendant 2-ethylhexanol-blocked TDI groups (1991)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 42 (1991), S. 1097-1105 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Alkyl partially blocked toluene diisocyanate (PBTDI) and hydroxyl group-containing polyepoxide were mixed to produce a blocked TDI-epoxy resin and then reacted with secondary amine and treated with acetic acid to give a cationic resin. In this study, six cationic resins (IV-A and IV-B, two series) were synthesized from three diglycidyl ethers of bisphenol A with different epoxy equivalent weights of 508, 650, and 950, and two secondary amines (diethylamine and diethanolamine). Acetic acid was used as the neutralization agent and ethylene glycol mono-n-butyl ether (butyl cellosolve, BCS) and deionized water were utilized as the emulsion solvents. Some properties of electrodeposition, such as throwing power and rupture voltage, and some physical and chemical properties of the deposited films were investigated.It was found that the appearance of emulsion, deposition yields, and quality of the deposited films are strongly dependent on pH, BCS, and resin contents. To obtain suitable deposition properties and stable emulsions from IV-A and IV-B systems, the aqueous dispersion should meet the following conditions: pH, 5.5-6.0; BCS contents, 3.0-5.0 wt %; and resin concentration, 7.0-9.0 wt %. For both systems, the deposited films had good appearance, adhesion, hardness, and alkali reagent resistance. The salt spray resistance and acid resistance of films deposited from series III-A (epoxy resin formulations containing diethylamine) are superior to films deposited from series III-B (epoxy resin formulations containing diethanolamine).
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1991.070420423
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  • 7
    Electronic Resource
    Electronic Resource
    Coemulsion and electrodeposition properties of mixtures of cationic epoxy resin and cationic acrylic resin containing blocked-isocyanate groups (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 51 (1994), S. 1539-1547 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: 2-Ethylhexanol-half-blocked-toluene diisocyanate (2EH-half-blocked TDI) was first reacted with 2-hydroxyethyl methacrylate (HEMA) to prepare HEMA-TDI-2EH monomer containing blocked-isocyanate groups. This monomer was reacted with butyl acrylate, styrene, and N,N-dimethylaminoethyl methacrylate to prepare an acrylic copolymer III′ containing blocked-isocyanate groups and tertiary amine groups. The acrylic copolymer III′ can be mixed with an epoxy-amine adduct IV′, acetic acid, and deionized (D.I.) water to from an electrodepositable coemulsion. The electrophoretic codeposition of the coemulsion and physical and chemical properties of the codeposited film were investigated. The resin composition of film deposited from coemulsion was determined by Fourier transform infrared (FTIR) quantitative analysis to study the coemulsion and electrophoretic codeposition behavior. The applicability of this two-component coemulsion in primer-surface (pricer) electrodepositable paint was also discussed. The results indicate that the deposition yield of cationic acrylic copolymer III is greater than that of cationic epoxy resin IV, i.e., the deposition velocity of III is faster than that of IV. However, resins III and IV can be well codispersed in D.I. water to form stable coemulsion; thus, the resin composition of deposited is almost equal to the resin composition. Moreover, the throwing power of coemulsion is almost equal to that of IV emulsion but greater than that of III emulsion. The optimum resin compositions of coemulsions for obtaining better gel content of deposited films are between 0.65 and 0.8 (III/III+IV, by weight). © 1994 John Wiley & Sons, Inc.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1994.070510903
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  • 8
    Electronic Resource
    Electronic Resource
    Studies on the electrodeposition of polyimides (1988)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 160 (1988), S. 91-106 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Emulsionen von aromatischen Polyamidsären (PMPE and PBPPM) in DMF und Methanol wurden benutzt, um gleichmäßige Filme auf Leiteroberflächen durch Elektrophorese abzuscheiden. Die Ausbeute und Qualität der abgeschiedenen Filme hängen von der Art der Polyamidsäre, dem Lösemittel, dem Fällungsmittel, dem oberflächenaktiven Mittel, dem pH-Wert und dem Polymergehalt ab. Die Bedingungen zum Erreichen der höchsten Abscheidungsausbeuten wurden bestimmt.
    Notes: The emulsions of aromatic polyamic acids (PMPE and PBPPM) in DMF and methanol were used to coat uniform films on conductor surfaces by electrodeposition. The deposition yield and quality of the deposited films are dependent on sort of polyamic acid, solvent (DMF), precipitant (MeOH), surfactant (TEA), pH value and solid content. To get maximum deposition yields from PMPE and PBPPM, the best conditions of electrodeposition were required as follows: pH value 5.7 and 5.58, MeOH/DMF weight ratio 3.0 and 2.8, solid content 3.5 and 2.4 wt.-%. Deposition yield was found to obey Faraday's law of electrolysis, and the higher the equivalent weight of the polyamic acid, the higher the coulombic yield.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1988.051600107
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  • 9
    Electronic Resource
    Electronic Resource
    Coemulsion and electrodeposition properties of mixtures of a poly(oxypropylene)-modified cationic epoxy resin and nonionic crosslinker system (1993)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 209 (1993), S. 79-94 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Emulgations- und Elektroabscheidungseigenschaften von Mischungen aus Poly(oxypropylen)-modifizierten kationischen Epoxidharzen (III) und einem nichtionischen Vernetzersystem aus Pentaerythritol/Toluoldiisocyanat/2-Ethylhexanol-(PETOL/TDI-2EH, V) wurden untersucht. Die Zusammensetzungen von elektrisch abgeschiedenen Filmen dieser Mischungen wurden durch quantitative FTIR-Analyse ermittelt, um die Wirkung der in den Verbindungen III enthaltenen weichen Oxypropylen-Segmente auf das Coemulsions- und das Elektrophoreseverhalten zu untersuchen. Die Ergebnisse deuten darauf hin, daß die Abscheidungsausbeute und das Streuvermögen der Emulsion von reinem III stark von dessen mittlerem Molekulargewicht (AMW) beeinflußt werden. Eine Verbindung der Reihe III mit hohem AMW zeigt eine höhere Abscheidungsausbeute, aber auch ein geringeres Streuvermögen. Auch die Abscheidungsausbeute von V/III-Coemulsionen steigt mit wachsendem AMW von III, wogegen das Streuvermögen von V/III-Coemulsionen nicht vom AMW abhangt, jedoch vom Anteil an weichen Oxypropylen-Segmenten in III beeinflußt wird. Ein wachsender Anteil an weichen Segmenten in III erhöht das Streuvermögen der Coemulsion. Darüber hinaus ist bei den Bedingungen einer stabilen Coemulsion die Zusammensetzung eines elektrisch abgeschiedenen Films annähernd gleich der Zusammensetzung der Coemulsion.
    Notes: The emulsification and electrodeposition properties of mixtures of a poly(oxypropylene) (POP)-modified cationic epoxy resin (III) and nonionic pentaerythritol/toluene diisocyanate/2-ethylhexanol (PETOL-TDI-2EH, V) were investigated and the compositions of their electrodeposited films were obtained by Fourier Transform Infrared (FTIR) quantitative analysis to study the effects of soft segments (oxypropylene groups) contained in resins III on the coemulsion and electrophoretic behavior.The results indicate that the deposition yield and throwing power of an emulsion of individual III are deeply affected by its average molecular weight (AMW). Resin III with higher AMW has higher deposition yield but lower throwing power. Moreover, the deposition yield of V/III coemulsion also increases with increasing the AMW of III. On the other hand, the throwing power of V/III coemulsion is not related to the AMW of III but affected by the amount of soft segments in III. Increasing “Soft segment” Content in III increases the throwing power of coemulsion. Furthermore, at the conditions providing stable coemulsion, the composition of electrodeposited film is almost equal to the resin composition of coemulsion.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1993.052090108
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  • 10
    Electronic Resource
    Electronic Resource
    Synthesis and properties of cationic amine-epoxy adducts and their use in electrodeposition, IIPart I cf. 12.. Diethanolamine/diketimine terminated cationic epoxy resins with pendent 2-ethylhexanol-blocked TDI groups (1992)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 196 (1992), S. 73-87 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Ein Bisphenol-A-Epoxidharz wurde zunächst mit Toluylendiisocyanat, dessen eine Isocyanatgruppe mit 2-Ethylhexanol blockiert war, und dann mit unterschiedlichen Mischungen on Diethanolamin und Bis(2-methyl-isobutylketiminoethyl)amin (DKI)umgesetzt. Aus diesen Harzen mit Triethanolamin- und DKI-Endgruppen wurden durch Hydrolyse und Neutralisieren mit Essigsäure kationische Harze mit primären Amin-Endgruppen erhalten, aus denen mit geeigneten Lösungsmitteln und deionisiertem Wasser Emulsionen hergestellt wurden. Deren Eigenschaften und die Elektroabscheidung der Harze aus den Emulsionen wurden untrsucht. Der Effekt der Zugabe von hydrophoben Lösungsmitteln wie Toluol oder Hexylcellosolv (HCS) auf die Abscheidungseigenschaften wird diskutiert.
    Notes: A diglycidylether of bisphenol A epoxy resin (DGEBA) was first reacted with 2,4-toluene diisocyanate partially blocked with 2-ethylhexanol (2-EH P. B. TDI) to form modified epoxy resins, and subsequently reacted with different molar ratios of diethanolamine and bis(2-methylisobutylketiminoethyl)amine (DKI) (used as ring opening agents) to give diethanolamine/diketimine terminated resins. These resins were hydrolyzed and neutralized with acetic acid to give cationic resins containing various contents of primary amine groups in the terminal polymeric chain. These cationic resins can be dissolved in a suitable solvent and mixed with deionized water to obtain emulsions. The electrodeposition properties and characteristics of the resulting cationic resins were investigated in detail. The effects of hydrophobic solvents, such as hexyl cellosolve (HCS) and toluene, on the deposition properties of the emulsions are discussed.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1992.051960106
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