EP0133600A2
Expired / Lapsed
EP
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Epoxy resin and composition
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1984-08-10
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Granted: —
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Expires: 2004-08-10
Abstract
Abstract An epoxy resin composition comprising a polyglycidyl ether prepared by reacting a 3-methyl-6-alkylphenol in the presence or absence of a phenol other than the 3-methyl-6-alkylphenol with an aldehyde to obtain a novolak, and then reacting the novolak with an epihalohydrin, which composition is useful in electronic fields, for example, for encapsulating semiconductor products or for the production of printed circuit boards.
Inventors
- 👤 Kunimasa Kamio
- 👤 Hisao Takagishi
- 👤 Shuichi Kanagawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 08:43
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0326; C; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/08; C08G8/00; C08G8/04; C08L; C08L63/00; C08L63/04; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/40; H10; H10W; H10W74/00; H10W74/40; H10W74/47
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
34 words
A polyglycidyl ether prepared by reacting a 3-methyl-6-alkylphenol in the presence or absence of a phenol other than the 3-methyl-6-alkylphenol with an aldehyde to obtain a novolak, and reacting the novolak with an epihalohydrin.
Claim 2
Dependent Claim
34 words
A polyglycidyl ether prepared by reacting a 3-methyl-6-alkylphenol in the presence or absence of a phenol other than the 3-methyl-6-alkylphenol with an aldehyde to obtain a novolak, and reacting the novolak with an epihalohydrin.
Claim 3
Dependent Claim
13 words
An epoxy resin composition comprising a polyglycidyl ether as claimed in claim 1.
Claim 4
Dependent Claim
32 words
The composition as claimed in claim 2 further comprising at least one member selected from curing agents, curing accelerators, conventional epoxy resins, fillers, fire retardants, coloring agents, surface-processing agents and release agents.
Claim 5
Dependent Claim
23 words
The composition as claimed in claim 3, wherein the curing agent is a member selected from dicyandiamide, hydrazides, novolaks, amines and acid anhydrides.
Claim 6
Dependent Claim
30 words
The composition as claimed in claim 3 or claim 4, wherein the amount of the curing agent is from 0.5 to 1.5 equivalents per epoxy group of the polyglycidyl ether.
Claim 7
Dependent Claim
27 words
The composition as claimed in any one of claims 2 to 5, wherein the composition is prepared by melt-kneading the polyglycidyl ether, followed by cooling and pulverizing.
Claim 8
Dependent Claim
28 words
The composition as claimed in any one of claims 2 to 6, wherein the composition is a varnish prepared by dissolving the polyglycidyl ether in an organic solvent.
Claim 9
Dependent Claim
24 words
A product obtained by curing the polyglycidyl ether claimed in claim 1 or the composition claimed in any one of claims 2 to 7.
Claim 10
Dependent Claim
29 words
A method for encapsulating a semiconductor product, which comprises using the polyglycidyl ether claimed in claim 1 or the composition claimed in any one of claims 2 to 7.
Claim 11
Dependent Claim
30 words
A method for producing a printed circuit board, which comprises using the polyglycidyl ether claimed in claim 1 or the composition claimed in any one of claims 2 to 7.
References Cited (Backward Citations)
No citation records indexed.
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