Adhesive tape for electronic parts and liquid adhesive

Details Adhesive tape for electronic parts and liquid adhesive Adhesive tape for electronic parts and liquid adhesive

1996-04-23

1997-03-25

Woodward, Ana

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428413, 428 414, 428 418, 428212, 428352, 428354, 428355CN, B32B 1508, B32B 710, B32B 2728

Patent

active

056143168

ABSTRACT:
This invention provide an adhesive tape by which adhesion to a metal spreader is not required and a cutting process is not necessary. The adhesive tape comprises an adhesive layer provided on at least one surface of metal sheet, said adhesive layer being semi-cured into a B-stage and comprised of: (a) a piperazinylethylaminocarbonyl-containing butadiene-acrylonitrile copolymer of the formula (I): ##STR1## wherein, k, m, and n are molar ratios and taking n as l, k is a number of 3-175, and m is a number of 0.3 to 93; and (b) a compound having at least two maleimide groups, the ratio of component (b) based on 100 parts by weight of component (a) being in a range of 10 to 900 parts by weight, and said adhesive layer being composed of at least two semi-cured layers having each a different status of semi-cure.

REFERENCES:
patent: 5446080 (1995-08-01), Shima et al.
patent: 5494757 (1996-02-01), Sakumoto et al.

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