Branched organopolysiloxanes

Details Branched organopolysiloxanes Branched organopolysiloxanes

1992-10-19

1993-12-21

Marquis, Melvyn I.

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

Synthetic resins

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

525474, 528 14, 528 15, 528 31, 528 37, 528 39, C08F28300

Patent

active

052722252

ABSTRACT:
The introduction of a branched organopolysiloxane in which polysiloxane with the formula SiO.sub.2 constitutes the branching center or branch origin and the terminal on only one side of diorganopolysiloxane is bonded to the branch origin wherein this bonding is exactly to the branch origin. The branched organopolysiloxane is described by formula

REFERENCES:
patent: 4946921 (1990-08-01), Shirahata et al.
patent: 5011901 (1991-04-01), Fukutani et al.
Polymer Science U.S.S.R., vol. 10, 1968, Oxford, GB, pp. 49-55, K. A. Adrianov et al., "Study of Polydimethylsiloxanes with 3- and 4-Functional Centres of Branching".
Polymer Sci U.S.S.R. vol. 23, No. 6, Jun. 1982, Oxford, GB pp. 1562-1569, I. I. Tverdokhlebova et al. "Synthesis and Properties of Star-Shaped Polymethylphenyl Siloxane".
Chemical Abstracts, vol. 112, No. 8, Feb. 19, 1990, Columbus, Ohio, US; abs; & Bull. Pol. Acad. Sci., Chem. vol. 36, 1989, pp. 91-97.
Polymer Bulletin, H. Huang et al, vol. 14 (1985) pp. 557-564.

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