Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1998-11-30
2000-07-04
Nutter, Nathan M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525194, 525195, 525197, 525241, C08F 800, C08L 2502
Patent
active
060840315
ABSTRACT:
An improved process for the preparation of thermoplastic vulcanizates from butyl rubbers by hydrosilylation crosslinking of acrylic or alkacrylic functionalized copolymers of isobutylene and paramethylstyrene is disclosed. The functionalization results in lower compression and tension set than when using conventional butyl rubbers. Other physical properties of the thermoplastic vulcanizate are improved consistent with more efficient crosslinking of the functionalized copolymer.
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Functionalized PMS/IB copolymers offer a wider range of properties (A selective radical bromination process substitutes a bromine atom on the para-methyl group to convert the "base" copolymers into versatile functionalized copolymers) by Hscen C. Wang and Kenneth W. Powers in a reprint from Elastomerics Jan., 1 and Feb. 1, 1992, copyrighted to Communication Channels Inc., Atlanta, Georgia.
Functionalized PMS/IB copolymers off wide range of properties--Part II (Nucleophilic substitution reactions can convert benzyl bromides to specific functionalities and enable the preparation of graft copolymers) by Hsien C. Wang and Kenneth W. Powers in reprint from Elastomerics, Jan. 1 and Feb. 1, 1992 copyrighted to Communication Channels Inc., Atlanta, Georgia.
Medsker Robert E.
Patel Raman
Wang Donald
Advanced Elastomer Systems L.P.
Laferty Samuel B.
Nutter Nathan M.
Skinner William A.
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