Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1995-08-03
1997-12-16
Acquah, Samuel A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528156, 528113, 525165, 525178, 525187, 525191, C08G 5968, C08G 6510
Patent
active
056986572
ABSTRACT:
Flexible epoxy resins are made by curing the epoxy with an amine curing agent in the presence of a low molecular weight acrylate copolymer made from a major amount of a lower aliphatic ester or amide of acrylic or methacrylic acid and a minor amount of an ethylenically unsaturated monomer having functionality reactive with functional groups present in the epoxy resin or its curing agent. The acrylate copolymer has a number average molecular weight in the range of 1000 to 6000, preferably 2000 to 3000, and a ratio of weight average to number average molecular weight in the range of 1 to 3.5. Copolymers of butylacrylate and acrylic acid or maleic anhydride are favored. Further advantages are realized by including in the cure formulation a monofunctional diluent reactive with the curative.
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Bott Richard Henry
Conner Mark David
Robeson Lloyd Mahlon
Starner William Edward
Acquah Samuel A.
Air Products and Chemicals Inc.
Rodgers Mark L.
Truong Duc
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