Piperazinylethylaminocarbonyl-containing butadiene-acrylonitrile

Details Piperazinylethylaminocarbonyl-containing butadiene-acrylonitrile Piperazinylethylaminocarbonyl-containing butadiene-acrylonitrile

1994-10-18

1995-06-27

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...

525375, C08F 832

Patent

active

054281130

ABSTRACT:
The piperazinylethylaminocarbonyl-containing butadiene-acrylonitrile copolymer of this invention is a novel substance useful as an adhesive component for adhesive tapes, which tapes are used in the interior of a resin-sealed type semiconductor device. The copolymer has a weight average molecular weight of 10,000-200,000, and is represented by the following general formula (I) and obtained by condensing a carboxyl-containing butadiene-acrylonitrile copolymer having a weight average molecular weight of 10,000-200,000 with N-aminoethylpiperazine in the presence of a phosphite and a pyridine derivative to undergo the amidation. ##STR1## wherein k, m, and n indicate molar proportions, where n is taken as 1, k is a number in the range of 3-175, and m is a number in the range of 0.3-93.

REFERENCES:
patent: 4301195 (1981-11-01), Mercer et al.
patent: 5312873 (1994-05-01), Gregor et al.
patent: 5362785 (1994-11-01), Inui et al.
"Production of Carboxylated Latices by Emulsion Polymerization", D. C. Blackley, NATO Adv. Study Inst. Ser. E 67, pp. 203-219, 1983.

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