Organopolysiloxane compositions for antiadhesive/release coating

Details Organopolysiloxane compositions for antiadhesive/release coating Organopolysiloxane compositions for antiadhesive/release coating

1985-10-15

1987-02-03

Marquis, Melvyn I.

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

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

528 15, 528 31, 528 32, 427387, 428447, C08F 246

Patent

active

046409394

ABSTRACT:
Gelation-resistant, high pot life organopolysiloxane compositions adapted for antiadhesive/release coating applications, are comprised of (1) at least one substantially straight-chain organopolysiloxane having a viscosity ranging from about 50 to 100,000 mPa.s at 25.degree. C. and containing at least x alkenyl unsaturated hydrocarbon groups bonded to a silicon atom, per molecule, wherein x.gtoreq.2, (2) at least one organohydropolysiloxane crosslinking agent having a viscosity ranging from about 10 to 100,000 mPa.s at 25.degree. C. and containing at least y hydrogen atoms bonded to silicon atoms, per molecule, wherein y.gtoreq.2, (3) a catalytically effective amount of a platinum group metal crosslinking catalyst, and (4) an effective amount of at least one azodicarboxylate gelation inhibitor which is inert to the activity of said catalyst (3), but in insufficient amount as to prevent the crosslinking of said polysiloxanes (1) and (2) under crosslinking conditions.

REFERENCES:
patent: 4172101 (1979-10-01), Getson
patent: 4293677 (1981-10-01), Imai
patent: 4448815 (1984-05-01), Grenoble et al.
patent: 4533575 (1985-08-01), Melancon

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