Internal resin-tackified acrylic polymers

Details Internal resin-tackified acrylic polymers Internal resin-tackified acrylic polymers

1990-12-20

1992-11-17

Schofer, Joseph L.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524481, 524484, 524490, 524 77, 525221, 525223, C09V10702

Patent

active

051644410

ABSTRACT:
Acrylic copolymer PSA compositions having enhanced peel strength without substantially decreasing shear properties have been formulated by homogeneously incorporating the tackifying resin into the polymer matrix. The tackifying resin is dissolved into a solution of alkyl (meth) acrylate and (meth) acrylic acid monomers prior to polymerization. To enhance the molecular weight of the resultant PSA, the monomer/tackifier solution is emulsion polymerized in the absence of chain transfer agents, such as antioxidant additives typically found in commercially available tackifiers, and allylic hydrogen present in many unsuitable tackifiers.

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patent: 4650829 (1987-03-01), Bossaert et al.
Bechtold, D., "Plasticizers for Adhesives", pp. 452-459, Handbook of Adhesives, Skeist I Ed. Reinhold Pub., New York, 1962.

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