Modification of (co)polymers employing organic peroxides

Details Modification of (co)polymers employing organic peroxides Modification of (co)polymers employing organic peroxides

1991-05-22

1993-04-13

Lipman, Bernard

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525391, 525392, C08F 800

Patent

active

052023869

ABSTRACT:
Organic (co)polymers, including saturated (co)polymers, are modified by contacting them with an organic peroxide and decomposing the peroxide. Use is made of an organic peroxide having the general formula R--(O--O--CHR.sup.1 --CR.sup.2 .dbd.CR.sup.3 R.sup.4)N, wherein N is 1, 2 or 3; R.sup.1 is H, C.sub.1 -C.sub.4 alkyl or C.sub.2 -C.sub.4 alkylene; R.sup.2, R.sup.3 and R.sup.4 are, independently, H or C.sub.1 -C.sub.4 alkyl; two of the substituents R.sup.1 -R.sup.4 together may form C.sub.3 -C.sub.12 alkylene; and, when N is 1, R is an optionally hydroxyl substituted C.sub.4 -C.sub.18 T.alkyl, P-menth-8-yl, C.sub.5 -C.sub.18 T.alkenyl, 1-vinylcyclohexyl or a group of the formula: --C(CH.sub.3)2--C.sub.6 HJ(5--M)--R.sup.5 (M), wherein M is 0, 1 or 2 and R.sup.5 is isopropenyl or 2-hydroxyisopropyl; when N is 2, R is a C.sub.8 -C.sub.12 alkylene or alkynylene group having a tertiary structure at both ends, or a group having the formula --(C)CH.sub.3)2)2--C.sub.6 H(4--X)--R.sup.5 (X), wherein X is 0 or 1; and when N is 3, R is 1,2,4- or 1,3,5-triisopropylbenzene-alpha, alpha"-triyl, i.a., 3-allylperoxy-3,3-dimethylpropene according to a preferred embodiment the modification is carried out in the presence of a coagent, whereby the advantageous polymer properties, such as adhesion to polar materials, are further enhanced.

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