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US 4,045,517 AGranted
Polyacrylic hot melt adhesives
AssigneeRohm and Haas Company
InventorsJohn D. Guerin, Thomas W. Hutton, John J. Miller, Richard E. Zdanowski
Life of this patent
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Abstract
Novel polyacrylic hot melt adhesives prepared by blending a polymer having a Tg of -85.degree. to 0.degree. C. with a polymer having a Tg of 20.degree. to 150.degree. C. are disclosed.
Claims12
A hot-melt adhesive composition comprising a blend or sequential polymerizate of:
- A. from about 5 to about 95 parts by weight of an addition copolymer having a Tg in the range of from 0.degree. to -85.degree. C. comprising:
- 2. from about 85 to about 99.5 parts by weight of a monomer or monomers selected from an alkyl (C.sub.2-18) or alkoxyalkyl acrylate and
- 2. from about 0.5 to about 15 parts by weight of an ethylenically unsatuated amine, carboxylic acid or sulfonic acid or mixtures thereof with
- B. from about 5 to about 95 parts by weight of an additiion copolymer having a Tg in the range of from about 20.degree. to about 150.degree. C. comprising:
- 1. from about 95 to about 99.5 parts by weight of a monomer or monomers of the formula:
- ##STR4## wherein R is hydrogen or methyl and R.sup.1 is lower alkyl, lower cycloalkyl or isobornyl and
- 2.
4 more elements
Dependencies are inferred from the claim text.