Stock material or miscellaneous articles – Layer or component removable to expose adhesive – Polymer derived from material having at least one acrylic or...
Patent
1997-12-24
2000-04-04
Nutter, Nathan M.
Stock material or miscellaneous articles
Layer or component removable to expose adhesive
Polymer derived from material having at least one acrylic or...
428 419, 428212, 428349, 428352, 428355CN, 428355N, 428447, 4284735, 528 26, B32B 712, C09J 702, C09J17908, H01L 2329
Patent
active
060458860
ABSTRACT:
This invention provide an adhesive tape and a liquid adhesive for electronic parts having sufficient thermal resistance and reliability. The adhesive tape comprises adhesive layers composed of at least a polyimide comprising the repeating units represented by the formulas (1) and (2) on both sides of the substrate, one of said adhesive layer having a higher glass transition temperature than that of the other adhesive layer: ##STR1## wherein X is --SO.sub.2 -- and/or --C(.dbd.O)--OCH.sub.2 CH.sub.2 O--C(.dbd.O)--,
REFERENCES:
patent: 5851616 (1998-12-01), Oka et al.
patent: 5866250 (1999-02-01), Oka et al.
patent: 5891540 (1999-04-01), Oka
Nishigaya Takeshi
Oka Osamu
Nutter Nathan M.
Tomoegawa Paper Co. Ltd.
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