Pressure sensitive adhesives with good low energy surface adhesi

Details Pressure sensitive adhesives with good low energy surface adhesi Pressure sensitive adhesives with good low energy surface adhesi

1997-02-06

1998-01-13

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526319, 526282, 526264, 526270, 526273, 526313, 526326, 52631844, C08F21800

Patent

active

057081107

ABSTRACT:
A pressure sensitive adhesive that includes the polymerization product of:
(a) 25-97 parts by weight of an acrylic acid ester of a monohydric alcohol whose homopolymer has a T.sub.g less than 0.degree. C.;
(b) 3-75 parts by weight of a non-polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of no greater than 10.50 and a T.sub.g greater than 15.degree. C.; and
(c) 0-5 parts by weight of a polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of greater than 10.50 and a T.sub.g greater than 15.degree. C. The relative amounts of the acrylic acid ester, the non-polar ethylenically unsaturated monomer, and the polar ethylenically unsaturated monomer are chosen such that the 90.degree. peel adhesion of the pressure sensitive adhesive to a polypropylene surface is at least 2 lbs/0.5 in. after a 72 hour dwell at room temperature as measured according to Test Procedure B.

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Disclosure re Samples Sent Out.
(Chem Abs; 118:60863y) Li, Shu Sheng, "Oil Absorptive Adhesives", Zhanjie, 1991, vol. 112, No. 6, pp. 19-22.
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Official Gaz. 1046 TMOG2, Sep. 4, 1984 (Listed on Examiner's 892 form).

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