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:
Anionic polymerization of various cyclosiloxanes [octamethylcyclotetrasiloxane (D4), 1,3,5,7-tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane (V4), and hexamethylcyclotrisiloxane (D3)] was performed. As catalysts, IRA-900 and PB-100 type anionites with benzyltrimethylam-monium and 3-acrylamidopropylbenzyldimethylammonium groups, respectively, were used. The anionite with higher strongly basic exchange capacity (IRA-900) is more efficient in dimethylcyclosiloxane polymerization. PB-100 anionite with less strongly basic capacity is more active for polymerization of the V4 monomer with bulky and electronegative sub-stituent. © 1996 John Wiley & Sons, Inc.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
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