Multiple release mold coating

Details Multiple release mold coating Multiple release mold coating

1985-12-27

1987-07-21

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 51, 264338, 264DIG77, 528 18, 528 34, B29C 3364, B29C 6720

Patent

active

046817140

ABSTRACT:
A method for molding articles where a composition is used to treat at least one shape determining face of a mold to impart durable release characteristics to said face which last through multiple molding cycles. The compositions comprise by weight 20 parts of primarily hydroxyl endblocked polydimethylsiloxane, 2 to 10 parts of alkyltriacetoxysilane, 20 to 80 parts of nonreactive organic solvent, and, optionally, 0.001 to 2 parts organometallic catalyst.

REFERENCES:
patent: 2811408 (1957-10-01), Braley
patent: 3492394 (1970-01-01), Heine
patent: 3532624 (1970-10-01), Cekada
patent: 3554910 (1971-01-01), Johnson
patent: 3579469 (1971-05-01), Grenoble
patent: 3684756 (1972-08-01), Brooks
patent: 4130698 (1978-12-01), Sparrow et al.
patent: 4244912 (1981-01-01), Battice
patent: 4534928 (1985-08-01), Martin
patent: 4551516 (1985-11-01), Kitamura et al.

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