Molding process using room temperature curing silicone coatings

Details Molding process using room temperature curing silicone coatings Molding process using room temperature curing silicone coatings

1983-12-19

1985-08-13

Schofer, Joseph L.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264338, 106 3822, 524731, 524860, 524863, 525475, 528 17, 528 18, 528 19, 528 33, 528 34, 427133, B28B 736

Patent

active

045349282

ABSTRACT:
An improved molding process is provided which comprises treating a mold surface with certain curable silicone compositions to improve the release of molded articles from the mold. The silicone mold release composition is obtained by mixing predominately hydroxyl terminated polydimethylsiloxane, an alkoxysilane such as methyltrimethoxysilane, a metal alkoxide such as tetraalkyltitanate and a non-reactive, volatile solvent. The composition is stable if stored in containers that exclude moisture, but cures when exposed to moisture. Molds with surfaces coated by these compositions provide easy release of many successively molded articles such as high resiliency polyurethane foam cushions for automobiles.

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patent: 4357443 (1982-11-01), White et al.
patent: 4359340 (1982-11-01), Comper et al.

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