Hot-melt processable release material, method of preparation, an

Details Hot-melt processable release material, method of preparation, an Hot-melt processable release material, method of preparation, an

1998-07-16

2000-11-14

Zirker, Daniel

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428 418, 525102, C09J 702, B32B 712

Patent

active

061467561

ABSTRACT:
An essentially solventless process for preparing a hot melt-processable release material comprises the step of providing reactants to a reactor, wherein the reactants comprise at least one backbone polymer having a grafting site that is reactive with a release component to selectively form a release moiety substituent at the grafting site; and a release component that is reactive with the grafting site. The release component is used in an effective amount for imparting release properties to the resulting release material. Also disclosed are release materials preparable thereby and coated substrates comprising the release material. Advantageously, release materials of the present invention are preparable and coatable using a single extruder.

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J. H. Saunders, et al., Polyurethanes Chemistry & Technology, Part 1: Chemistry, pp. 167-169 (1962).
"Release Compound," Research Disclosure, 37932, Nov. 1995.

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