Multiple release mold coating for high water, high resiliency po

Details Multiple release mold coating for high water, high resiliency po Multiple release mold coating for high water, high resiliency po

1987-06-04

1988-08-02

Marquis, Melvyn I.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524113, 524315, 524465, 524473, 524490, 524588, 524861, 528 17, 528 18, 528 31, 264338, C08K 515

Patent

active

047614439

ABSTRACT:
A method for molding high water, high resiliency (HR) polyurethane foam articles is disclosed wherein a silicone mold release composition is used to treat the surfaces of a mold. The composition imparts release characteristics to the mold which last through multiple molding cycles, allow recoating with said composition and allows the production of defect-free foam articles. The composition consists essentially of a high and a low molecular weight hydroxyl endblocked polydimethylsiloxane, a siloxane crosslinker having SiH functionality, a catalyst and an inert solvent.

REFERENCES:
patent: 4244912 (1981-01-01), Battice
patent: 4461851 (1984-07-01), Hashimoto
patent: 4534928 (1985-08-01), Martin
patent: 4535123 (1985-08-01), Sasaki et al.
patent: 4569980 (1986-02-01), Sasaki et al.
patent: 4681714 (1987-07-01), Lopes et al.

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