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US4975471A Expired / Lapsed US ⏱️ 0.0 years remaining

Photo-curable epoxy resin type composition

Assignee: Toshiba Corp
•
Filing: 1988-08-29
•
Granted: 1990-12-04
•
Expires: 2008-08-29
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Abstract

Abstract A photo-curable epoxy resin type composition which comprises (a) an epoxy resin, (b) at least one compound selected from the group consisting of (i) a compound having a group, other than an imido group, which is represented by the formula --CONH and (ii) an aromatic amine, (c) an organic metal compound, where said metal is selected from the group consisting of titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, aluminum and zirconium; and (d) an organic silicon compound having at least one group selected from the group consisting of a peroxysilyl group and an o-nitrobenzyloxy group capable of forming a silanol group by irradiation with light. The photo-curable epoxy resin type composition according to this invention is capable of readily curing by light (ultraviolet ray in particular) and also capable of heat curing at a temperature of 150° C. or more, and yet provides a cured product that is free of ionic impurities, does not corrode metallic materials which may be in contact with the composition, and displays excellent electrical properties.

Inventors

  • 👤 Shuzi Hayase
  • 👤 Shuichi Suzuki
  • 👤 Moriyasu Wada

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 18:34
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2642; C08G65/269; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/56; C08G59/68; C08G65/04; C08G65/06; C08G65/08; C08G65/10; C08G65/12; C08G65/2669; C08G65/2681; G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0385

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 75 words
A photo-curable composition which comprises (a) an epoxy resin; (b) an aromatic amine that has at least one --NH group; (c) an organic aluminum compound selected from the group consisting of alkoxyaluminum, substituted or unsubstituted phenoxyaluminum, acyloxyaluminum, β-diketonatoaluminum and carbonylphenolatoaluminum compounds; and (d) an organic silicon compound that has at least one substituent selected from a peroxysilyl group and an o-nitrobenzyloxy group and that is capable of forming a silanol group upon irradiation with light.
Claim 2
Dependent Claim 75 words
A photo-curable composition which comprises (a) an epoxy resin; (b) an aromatic amine that has at least one --NH group; (c) an organic aluminum compound selected from the group consisting of alkoxyaluminum, substituted or unsubstituted phenoxyaluminum, acyloxyaluminum, β-diketonatoaluminum and carbonylphenolatoaluminum compounds; and (d) an organic silicon compound that has at least one substituent selected from a peroxysilyl group and an o-nitrobenzyloxy group and that is capable of forming a silanol group upon irradiation with light.
Claim 3
Dependent Claim 14 words
The photo-curable composition according to claim 1, wherein the composition further comprises a filler.
Claim 4
Dependent Claim 24 words
The photo-curable composition according to claim 1, wherein the mixing proportion of the component (b) is 0.5 to 1.5 equivalent based on component (a).
Claim 5
Dependent Claim 25 words
The photo-curable composition according to claim 1, wherein the mixing proportion of component (c) is 0.001 to 10% by weight based on the component (a).
Claim 6
Dependent Claim 24 words
The photo-curable composition according to claim 1, wherein the mixing proportion of component (d) is 0.01 to 20% by weight based on component (a).
Claim 7
Dependent Claim 23 words
The photo-curable composition according to claim 2, wherein the mixing proportion of the filler is 1 to 200% by weight of component (a).
Claim 8
Dependent Claim 38 words
The photo-curable epoxy resin type composition according to claim 1, wherein component (b) is selected from the group consisting of diaminodiphenylmethane, diaminodiphenyl ether, diaminobenzanilide, isophthaloyl bis(4-aminoanilide), N,N'-m-phenylene-bis(4-aminobenzamide), isophthaloyl bis(3-aminoanilide) N,Obis(3-aminobenzoyl-p-aminophenol, bis(4-aminophenyl)isophthalate an aniline-formaldehyde resin and a polyamide resin.
Claim 9
Dependent Claim 41 words
The photo-curable composition according to claim 1, further comprising a compound selected from the group consisting of biacetyl, acetophenone, benzophenone, benzil, benzoin, benzoin isobutyl ether, benzil dimethyl ketal, benzoyl peroxide, 1-hydroxycyclohexylphenyl ketone, (1-hydroxy-1-methylethyl)-phenyl ketone, p-isopropyl-2-hydroxyisobutylphenone, thioxanthone, chlorothioxanthone, 4,4'-diethylamino benzophenone, 4,4'-dimethylamino benzophenone.
Claim 10
Dependent Claim 24 words
The photo-curable composition according to claim 8, wherein the mixing proportion of the photosensitizer is 0.001 to 10% by weight based on component (a).

References Cited (Backward Citations)

US3450613A Cited
US3708296A Cited
US4092443A Cited
US4081276A Cited
US4252592A Cited
US4299938A Cited
US4406764A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-12-03 1994-06-04 1994-12-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-12-03 1998-06-04 1998-12-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-12-03 2002-06-04 2002-12-04 $7700.00 Window Closed / Lapsed

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