Diorganopolysiloxanes containing itaconate functional groups

Details Diorganopolysiloxanes containing itaconate functional groups Diorganopolysiloxanes containing itaconate functional groups

1989-05-10

1990-12-18

Marquis, Melvyn I.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524264, 524266, 524269, 528 15, 528 26, 528 31, C08K 524

Patent

active

049787012

ABSTRACT:
Diorganopolysiloxanes containing itaconate functional groups include at least one recurring structural unit of the formula (1): ##EQU1## in which a is 1 or 2; the symbol Z is one of the radicals --CH.sub.2 CH(COOR')CH.sub.2 COOR' and --C(CH.sub.3)(COOR')CH.sub.2 COOR'; the symbols R, which may be identical or different, are each a C.sub.1 -C.sub.20 alkyl, vinyl, phenyl or 3,3,3-trifluoropropyl radical, and, in the case where a=2, one of the radicals R may be a hydroxyl group; and the symbols R', which may be identical or different, are each a C.sub.1 -C.sub.12 monovalent hydrocarbon radical or a C.sub.2 -C.sub.12 monovalent alkoxyalkyl radical, and are useful, e.g., as PVC lubricants and hydraulic fluids; they are facilely prepared by hydrolysis/polycondensation or by hydrosilylation.

REFERENCES:
patent: 4101492 (1978-07-01), Lindemann et al.
patent: 4405469 (1983-09-01), Hafner et al.
patent: 4647683 (1987-03-01), Manis et al.

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