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  • Chemistry  (1,602)
  • 2015-2019  (48)
  • 1960-1964  (1,036)
  • 1955-1959  (518)
  • 1
    Electronic Resource
    Electronic Resource
    Gas-solid contacting with ozone decomposition reaction (1958)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 4 (1958), S. 403-408 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690040405
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  • 2
    Electronic Resource
    Electronic Resource
    Condensation of poly(4-vinylacetophenone) with various araldehydesCommunication No. 2070 from the Kodak Research Laboratories. (1960)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 3 (1960), S. 310-315 
    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 preparation of condensation products of poly(4-vinyl-acetophenone) with various substituted benzaldehydes is described. As in the case of the products obtained by condensing the poly(4-vinylacetophenone) with benzaldehyde, these, too, show to varying degrees the property of becoming insoluble when exposed to light. This sensitivity to light is generally higher where the aldehyde used contains electrondonating substituent groups in the para-position. This, in turn, is also related to the ability of such products to absorb a larger proportion of the longer wavelength portion of the emitted light.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1960.070030908
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  • 3
    Electronic Resource
    Electronic Resource
    Viscosity of dilute solutions of linear and branched polyvinyl acetateA preliminary account of this work was presented at the Ann Arbor High Polymer Research Conference, July 25, 1955. (1956)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 22 (1956), S. 123-135 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The dilute solution viscosity properties of fractions of two linear and one branched sample of polyvinyl acetate in benzene and of two linear and one branched fraction in several solvents were measured at 35°C. Values of total slope, b (from plots of ηsp/c vs. c), and intrinsic viscosities were obtained under the requirement that k′ + β = 0.500 ± 0.002. Empirical plots of log b vs. log [η] gave lines which were straight within the limits of accuracy of the data. For the linear fractions in benzene, Huggins' k′ was constant and the slope of the log b vs. log [η] line was 2; for the branched fractions in benzene, k′ increased with [η] and the slope of the log b vs. log [η] line was greater than 2. The log b vs. log [η] plots form the basis for a “one-point” method for determining [η]. Consideration of these data along with results reported in the literature indicates that k′ is measurably sensitive to branching only for fractions possessing a certain minimum combination of size and complexity. However, in some cases where the variations of k′ are inconclusive, use of the slope of the log b vs. log [η] line may provide a reliable indication of branching. It was found that a comparison between the branched and linear series could also be made at constant values of [η] or b. Two linear fractions in different solvents obeyed a type of Huggins relationship in which k′ did not vary with solvent and the slope of the log b vs. log [η] line was 2. For a higher molecular weight branched fraction, however, k′ varied from solvent to solvent and the slope of the log-log plot was about 1.7. These data do not support a reference point concept of “true” intrinsic viscosity based on a simple linear relationship between b and [η]. Preliminary results dealing with the effects of the shear rate indicated that the measured viscosity properties of branched fractions may be more seriously affected by changes in shear rate than those of linear fractions.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1956.1202210014
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  • 4
    Electronic Resource
    Electronic Resource
    A further interpretation of resonance and electrical factors affecting copolymerization (1959)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 40 (1959), S. 457-468 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: New equations for evaluation of resonance (q) and electrical (∊) factors affecting copolymerization have been derived: \documentclass{article}\pagestyle{empty}\begin{document}$ \begin{array}{*{20}c} {r_1 } \hfill & { = \exp \left\{ { - {{\left( {q_1 - q_2 } \right)} \mathord{\left/ {\vphantom {{\left( {q_1 - q_2 } \right)} {RT}}} \right. \kern-\nulldelimiterspace} {RT}}} \right\}\exp \left\{ { - 7.23 \times 10^{20} \varepsilon _1 {{\left( {\varepsilon _1 - \varepsilon _2 } \right)} \mathord{\left/ {\vphantom {{\left( {\varepsilon _1 - \varepsilon _2 } \right)} {RT}}} \right. \kern-\nulldelimiterspace} {RT}}} \right\}} \hfill \\ {r_2 } \hfill & { = \exp \left\{ { - {{\left( {q_2 - q_1 } \right)} \mathord{\left/ {\vphantom {{\left( {q_2 - q_1 } \right)} {RT}}} \right. \kern-\nulldelimiterspace} {RT}}} \right\}\exp \left\{ { - 7.23 \times 10^{20} \varepsilon _2 {{\left( {\varepsilon _2 - \varepsilon _1 } \right)} \mathord{\left/ {\vphantom {{\left( {\varepsilon _2 - \varepsilon _1 } \right)} {RT}}} \right. \kern-\nulldelimiterspace} {RT}}} \right\}} \hfill \\ {r_1 r_2 } \hfill & { = \exp \left\{ { - 7.23 \times 10^{20} {{\left( {\varepsilon _1 - \varepsilon _2 } \right)^2 } \mathord{\left/ {\vphantom {{\left( {\varepsilon _1 - \varepsilon _2 } \right)^2 } {RT}}} \right. \kern-\nulldelimiterspace} {RT}}} \right\}} \hfill \\ \end{array} $\end{document} The new equations will apply over any temperature range, and will express ∊ in terms of e.s.u. and q in kcal./mole. These factors were determined for an extensive list of monomers and were tabulated. Agreement with Hammett σ values and other kinetic and theoretical considerations were found.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1959.1204013715
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  • 5
    Electronic Resource
    Electronic Resource
    Ultraviolet irradiation of plastics. II. Crosslinking and scissionThis work was supported by the Materials Central, Wright Air Development Division, Air Research and Development Command. (1961)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 55 (1961), S. 465-475 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Ultraviolet irradiation of polyethylen, nylon, Mylar, and Acrilan produces higher scission-to-crosslinking ratios when irradiation is performed in a nitrogen atmosphere than it does when irradiation is in a vacuum. Irradiation of polyethylene in nitrogen causes a sharp decrease in molecular weight while irradiation of Acrilan in vacuum causes an equally notable increase in molecular weight.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1961.1205516205
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  • 6
    Electronic Resource
    Electronic Resource
    Polyperfluoroalkyl oxetanes: A new class of thermally stable polymers (1962)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 58 (1962), S. 633-638 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Two perfluoroalkyl oxetanes, 2-heptafluoropropyloxetane and 3-ethyl-3-nonafluorobutyloxetane, were synthesized and polymerized. The 2-heptafluoropropyloxetane was prepared by the ring closure of heptafluoro-1,3-hexanediol with sulfuric acid and sodium hydroxide. The 3-ethyl-3-nonafluorobutyloxetane was prepared from diethyl ethylmalonate and perfluorobutyryl chloride. The sodium salt of the ester was acylated with the acid chloride. The resulting ketodiester was reacted with sulfur tetrafluoride to give diethyl α-ethyl-α-perfluorobutylmalonate. This ester was then reduced with lithium aluminum hydride to give 2-ethyl-2-perfluorobutyl-1,3-propanediol. This diol was then converted to the oxetane with sulfuric acid and sodium hydroxide. These oxetanes were polymerized in methylene chloride solution with boron trifluoride as the catalyst. Both polymers were viscous oils. The oxetane polymers were exposed as thin molten films to air at 300°F. Also tested under these conditions were polyethylene oxide, polypropylene oxide, polytrimethylene oxide, poly(3,3-dimethyl)oxetane, and Teracol 30. The polymer from 2-perfluoropropyloxetane was more stable than all the nonfluorinated polyethers tested. After an initial high weight loss, attributed to impurities, the polymer from 3-ethyl-3-perfluorobutyloxetane was the most stable polyether tested.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1962.1205816638
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  • 7
    Electronic Resource
    Electronic Resource
    Pilot plant studies on parboiling of rice - III. Effect of hot soaking and mechanical drying on the nutritive value of parboiled rice (1960)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Biochemical and Microbiological Technology and Engineering 2 (1960), S. 447-451 
    Details
    ISSN: 0368-1467
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Hot soaking of paddy in the parboiling process does not significantly affect the digestibility of rice compared to ‘raw’ rice. Mechanically dried parboiled rice appears to be slightly more digestible in vitro than sun-dried parboiled rice. It is also significantly superior in thiamine value.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbmte.390020408
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  • 8
    Electronic Resource
    Electronic Resource
    Preparation and polymerization of vinyl esters of cyclic and polychloro fatty acidsPresented in part at the 141st National Meeting of the American Chemical Society, Washington, D. C., March, 1962. (1964)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 2 (1964), S. 2523-2532 
    Details
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Homopolymers and vinyl chloride copolymers have been prepared from the vinyl esters of mixed hydrogenated cyclized linolenic acid, 9,10-dichlorostearic acid, 9,10,12,13-tetrachlorostearic acid, 13,14-dichlorobehenic acid, 9(10)-phenylstearic acid and technical behenic acid. Vinyl 13,14-dichlorobehenate (29%)-vinyl chloride (71%) gave a copolymer with a brittle temperature of -2°C. All of the other copolymers with vinyl chloride had brittle temperatures of 16°C. or higher and behaved more like rigid plastics.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1964.100020604
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  • 9
    Electronic Resource
    Electronic Resource
    Diffusion constants of a maltosaccharide seriesThis work was supported by a grant-in-aid from the American Maize-Products Co. (1963)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 1 (1963), S. 817-821 
    Details
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: A series of maltosaccharides, from glucose through maltohexaose, was prepared from starch labeled with 14C. Self and integral diffusion coefficients were measured in dilute and in concentrated solvents. The coefficients were related more or less rectilinearly with the logarithm of degree of polymerization, presumably because of molecule asymmetry. A greater diminution in the coefficient occurred in 20% sucrose than in 20% corn syrup of approximately equal molarity but considerably greater viscosity.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1963.100010218
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  • 10
    Electronic Resource
    Electronic Resource
    Pilot plant studies on parboiling of rice - II. Dehydration (1960)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Biochemical and Microbiological Technology and Engineering 2 (1960), S. 439-445 
    Details
    ISSN: 0368-1467
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A compact dryer for the parboiling of paddy has been described. The use of steam tubes along the circumference of the shell has made high drying rates possible. The rate of water removal is dependent on steam pressure in the tubes. Blowing of pre-heated air through the dryer shell is necessary. The optimum drying conditions for parboiled paddy as observed in the experimental rotary dryer are: (a) the steam pressure in the tubes should be about 45 lb/in2 gauge; (b) the feed rate should be 150 lb/h, approximately; (c) the rotation should be about 5 rev/min; (d) the inclination of the shell should be nearly 2° to the horizontal and (e) air at a rate of 100 ft3/min should be blown parallel to the feed, pre-heated to a temperature of 90°C.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbmte.390020407
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