Organopolysiloxane resin compositions for release papers

Details Organopolysiloxane resin compositions for release papers Organopolysiloxane resin compositions for release papers

1980-07-01

1982-03-16

Briggs, Sr., Wilbert J.

Stock material or miscellaneous articles

Composite

Of silicon containing

428452, 525100, 525101, 525443, 525446, 260 21, C08L 3102, C08L 6706, C08L 8310

Patent

active

043201725

ABSTRACT:
The invention provides a novel in-process release paper, i.e. a release paper used as a backing paper in the manufacturing of, e.g. a synthetic leather with a polyurethane resin. The releasing resin composition with which the release paper is coated is novel as comprising (a) a base resin selected from the group consisting of alkyd resins and acrylic resins modified with an organopolysiloxane, of which from 15 to 50% by moles of the organic groups directly bonded to the silicon atoms in a molecule are phenyl groups, having at least one hydroxy-substituted organic group directly bonded to the silicon atom in a molecule, (b) an alkanol-modified amino resin and (c) an acidic catalyst. The inventive in-process release paper is very superior to the conventional ones in the very much reduced peeling resistance, increased surface gloss and durability in repeated use.

REFERENCES:
patent: 3644566 (1972-02-01), Kincheloe et al.
patent: 3714287 (1973-01-01), Campbell et al.
patent: 4024100 (1977-05-01), Kuhn et al.

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