Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1991-04-26
1993-08-24
Lipman, Bernard
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
1562722, 1562755, 5253277, 5253278, 525384, C08F 812
Patent
active
052390179
ABSTRACT:
A continuous process for the production of pressure sensitive adhesive mass compositions and adhesive elements which exhibit excellent properties with respect to a variety of substrates, which is non-toxic and non-sensitizing. The element exhibits high cohesive strength so that its integrity is maintained on removal from the substrate leaving no residues and is highly flexible so that total confirmation with the underlying shape of the substrate is maintained. The adhesive composition includes the hydrolysis/esterification product of a methyl vinyl ether/maleic anhydride copolymer with an hydroxylated compound. In this invention, the adhesive element is prepared by microwave heating of a mixture of the copolymer and hydroxylated compound, preferably with a surfactant, in the presence of water.
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Pelesko John D.
Russell Gary S.
ISP Investments Inc.
Katz Walter
Lipman Bernard
Maue Marilyn J.
Ward Joshua J.
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