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US 5,393,861 AGranted
Polysulfide polyether and polymer composition comprising polysulfide and polyether
AssigneeToray Thiokol Co., Ltd.
InventorsKazuhisa Sakae, Kouki Echigoya, Mitsuhiro Okajima
Life of this patent
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Abstract
The polysulfide polyether of the present invention has in a main chain (i) a polyether moiety represented by --(R.sub.1 O)--.sub.n ; (ii) structural units represented by --(C.sub.2 H.sub.4 O CH.sub.2 O C.sub.2 H.sub.4 --S.sub.x)--, and --(CH.sub.2 CH (OH) CH.sub.2 --S.sub.x --); and at both ends (iii) a thiol group represented by --C.sub.2 H.sub.4 O CH.sub.2 O C.sub.2 H.sub.4 --SH, and/or --CH.sub.2 CH (OH) CH.sub.2 --SH. When mixed with epoxy resins, etc., this polymer is cured at a controlled speed.
Claims4
A polysulfide polyether having in a main chain:
- (i) a polyether moiety represented by --(R.sub.1 O)--.sub.n, wherein R.sub.1 is an alkylene group having 2-4 carbon atoms, and n is an integer of 6-200;
- (ii) structural units represented by
- --(C.sub.2 H.sub.4 O CH.sub.2 O C.sub.2 H.sub.4 --S.sub.x)--, and
- --(CH.sub.2 CH (OH) CH.sub.2 --S.sub.x)--,
- wherein x is an integer of 1-5;
- and at both ends
- (iii) a thiol group represented by
- --C.sub.2 H.sub.4 O CH.sub.2 O C.sub.2 H.sub.4 --SH, and/or
- --CH.sub.2 CH OF CH.sub.2 --SH.
6 more elements
Dependencies are inferred from the claim text.