THERMALLY CONDUCTIVE PRESSURE-SENSITIVE ADHESIVE, ADHESIVE SHEET CONTAINING THE SAME, AND METHOD FOR FIXING ELECTRONIC PART TO HEAT-RADIATING MEMBER WITH THE SAME

Title:

THERMALLY CONDUCTIVE PRESSURE-SENSITIVE ADHESIVE, ADHESIVE SHEET CONTAINING THE SAME, AND METHOD FOR FIXING ELECTRONIC PART TO HEAT-RADIATING MEMBER WITH THE SAME

Document Type and Number:

WIPO Patent Application WO/1998/024860

Kind Code:

A1

Abstract:

A thermally conductive pressure-sensitive adhesive which is excellent in thermal conductivity and adhesive properties, has a high adhesive strength especially at high temperatures (high holding power under high-temperature shear), undergoes no abrupt viscosity increase during or after adhesive production, and has excellent stability. The adhesive comprises: (a) 100 parts by weight of a copolymer of a monomer mixture comprising 70 to 99 wt.% monomers consisting mainly of alkyl (meth)acrylates in which the alkyls each has 2 to 14 carbon atoms on the average and 30 to 1 wt.% copolymerizable monomer having an acidic or basic polar group in the molecule; and (b) 10 to 300 parts by weight of a thermally conductive filler having the same polar groups as the copolymerizable monomer and a purity of 95 wt.% or higher. The adhesive sheet comprises a substrate and, formed thereon, a layer of the thermally conductive pressure-sensitive adhesive. The method for fixing an electronic part to a heat-radiating member comprises the use of the adhesive or the adhesive sheet.

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Inventors:

OHURA MASAHIRO (JP)
MUTA SHIGEKI (JP)
YOSHIKAWA TAKAO (JP)

Application Number:

PCT/JP1997/004320

Publication Date:

June 11, 1998

Filing Date:

November 26, 1997

Export Citation:

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Assignee:

NITTO DENKO CORP (JP)
OHURA MASAHIRO (JP)
MUTA SHIGEKI (JP)
YOSHIKAWA TAKAO (JP)

International Classes:

C09J7/22; C09J7/38; C09J9/00; C09J133/06; H01L21/58; H05K3/32; (IPC1-7): C09J133/06; C09J7/02; C09J9/00

Foreign References:

JPH0688061A	1994-03-29
JPS6433175A	1989-02-03
JPS62503174A	1987-12-17
JPH04114075A	1992-04-15

Other References: