Silicone composition for release agent

Details Silicone composition for release agent Silicone composition for release agent

2006-08-01

2006-08-01

Peng, Kuo-Liang (Department: 1712)

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

Synthetic resins

From silicon reactant having at least one...

C528S015000, C528S032000, C528S031000, C524S366000

Reexamination Certificate

active

07084229

ABSTRACT:
A silicone composition for a release agent, which comprises (A) an organopolysiloxane having at least two alkenyl groups bonded to a silicon atom and at least one fluorine-containing substituent bonded to a silicon atom, in one molecule, and having a fluorine content of from 20 to 40% by weight, (B) an organohydrogenpolysiloxane having at least three hydrogen atoms bonded to a silicon atom in one molecule, (C) a straight-chain perfluoropolyether anti-foaming agent, and (D) a platinum group metal catalyst. Even when the silicone composition is diluted with a non-fluorine-type solvent, it is possible to avoid foaming (the reason for pin holes and repelling) does not occur during roller coating. Moreover, the silicone composition provides a cured coating which needs only a low peel force and hardly gives reduction in the residual adhesive ratio.

REFERENCES:
patent: 4842902 (1989-06-01), Brown et al.
patent: 4-76391 (1992-12-01), None
patent: 5-7434 (1993-01-01), None
patent: 7-18185 (1995-01-01), None

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