Oligomers with multiple chemically functional end caps

Details Oligomers with multiple chemically functional end caps Oligomers with multiple chemically functional end caps

1994-10-21

1999-10-19

Seidleck, James J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528125, 528128, 528172, 528173, 528183, 528188, 528190, 528220, 528229, 528272, 528288, 528289, 528290, 528310, 528322, 528350, 528352, 528353, 525422, 525432, 525434, 525436, 4284111, 4284735, 4284745, C08G 7310, C08G 7314, C08G 7312, C08G 6944

Patent

active

059690798

ABSTRACT:
Thermomechanical and thermo-oxidative stabilities in resin composites across the range of aerospace "engineering thermoplastic" resins are improved by forming four crosslinks at each addition polymerization site in the backbone of the resin using crosslinking functionalities of the general formula: ##STR1## wherein Z= ##STR2## .beta.=the residue an organic radical selected from the group consisting of: ##STR3## R.sub.R =a divalent organic radical; X=halogen;
Me=methyl
T=allyl or methallyl.
G=--CH.sub.2 --,--S--, --CO--, --SO--, --O--, --CHR.sub.3 --, or --C(R.sub.3).sub.2 --;
i=1 or 2;
R.sub.3 =hydrogen, lower alkyl, lower alkoxy, aryl, or aryloxy; and
.theta.=--C.tbd.N, --O--C.tbd.N, --S--C.tbd.N, or --CR.sub.3 .dbd.C(R.sub.3).sub.2 --

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