Integrated circuit socket comprising a polyimide polymer
AssigneeMitsui Toatsu Chemicals, Inc.
InventorsToshihiko Tsutsumi, Toshiyuki Nakakura, Taizo Nagahiro, Shuithi Morikawa, Nobuhito Koga
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Abstract
Integrated circuit sockets for use in a burn-in test are disclosed. The IC sockets are produced by injection molding of a specific polyimide having an inherent viscosity of 0.35 to 0.65 dl/g and essentially consisting of recurring units represented by the formula (I): ##STR1## wherein X is a radical selected from the group consisting of a bond, divalent hydrocarbon having from 1 to 10 carbon atoms, etc. and R is a tetravalent radical selected from the group consisting of an aliphatic radical having two or more carbon atoms, cycloaliphatic radical, monoaromatic radical etc.
Claims9
An integrated circuit socket which is constructed and adapted to fix an integrated circuit on a printed board, said integrated circuit socket comprising a polyimide consisting essentially of recurring units represented by the formula (I):
- ##STR5## wherein x is a bond or x is a radical selected from the group consisting of a bond or a radical selected from the group consisting of a divalent hydrocarbon having from 1 to 10 carbon atoms, carbonyl, thio, or sulfonyl, and R is a tetravalent radical selected from the group consisting of an aliphatic radical having two or more carbon atoms, cycloaliphatic radical, monoaromatic radical, condensed polyaromatic radical, and non-condensed polyaromatic radical wherein aromatic radicals are mutually connected with a bond or a crosslinking function.
Dependencies are inferred from the claim text.