Optically clear reinforced organosiloxane compositions

Details Optically clear reinforced organosiloxane compositions Optically clear reinforced organosiloxane compositions

1988-08-26

1989-11-21

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...

528 15, 528 31, 528 32, C08F28300

Patent

active

048823988

ABSTRACT:
The presence of up to about 40 percent by weight of a resinous organosiloxane copolymer consisting essentially of trimethylsiloxy, dimethylvinylsiloxy and SiO.sub.2 units in a diorganovinylsiloxy-terminated polydiorganosiloxane containing at least 95 mol percent of dimethylsiloxane units and having a viscosity greater than about 12 Pa.s at 25 degrees C., unexpectedly decreases the viscosity of the mixture relative to the viscosity of the polydiorganosiloxane. Elastomers obtained by curing these mixtrues using an organohydrogensiloxane in the presence of a platinum-containing hydrosilation catalyst are transparent and particularly suitable for fabrication or incorporation into optical devices such as windows, windshields and lenses.

REFERENCES:
patent: 3284406 (1966-11-01), Nelson
patent: 3436366 (1969-04-01), Modic
patent: 4500584 (1985-02-01), Modic
patent: 4529789 (1985-07-01), Kroupa
patent: 4535141 (1985-08-01), Kroupa

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