EP0219242A2
Expired / Lapsed
EP
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Epoxy type spherical particulate adhesive and process for preparation thereof
Assignee: Toray Industries Inc
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Filing: 1986-09-23
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Granted: —
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Expires: 2006-09-23
Abstract
Abstract A spherical particulate adhesive comprising at least an epoxy resin as the main component has an average particle size of 0.3 to 500 µm, the particles of the epoxy resin containing a latent curing agent homogeneously in the interior thereof. This adhesive is a heat-curable adhesive and has a very high bonding force. After bonding, the adhesive is chemically stable and is especially preferably used for bonding in the field of electronic materials, such as liquid crystal display devices, which are apt to be degraded by impurities and for which high-precision bonding is required.
Inventors
- 👤 Oka Koichiro
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 17:31
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J3/16; C08G; C08G59/00; C08G59/18; C08G59/188; C09; C09J; C09J163/00; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1339; G02F1/13392; C08J2363/00
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
40 words
An epoxy type spherical particulate adhesive comprising at least an epoxy resin as the main component, wherein the epoxy resin contains a latent curing agent in the interior of particles and the average particle diameter is 0.3 to 500 µm.
Claim 2
Dependent Claim
40 words
An epoxy type spherical particulate adhesive comprising at least an epoxy resin as the main component, wherein the epoxy resin contains a latent curing agent in the interior of particles and the average particle diameter is 0.3 to 500 µm.
Claim 3
Dependent Claim
24 words
An epoxy type spherical particulate adhesive as set forth in claim l, wherein the latent curing agent is a condensation or addition type compound.
Claim 4
Dependent Claim
21 words
An epoxy type spherical particulate adhesive as set forth in claim l, wherein the latent curing agent is a phenolic compound.
Claim 5
Dependent Claim
35 words
An epoxy type spherical particulate adhesive as set forth in claim 3, wherein the latent curing agent is an adduct of a bisphenol diglycidyl ether or a condensation product thereof and a polyhydric phenol compound.
Claim 6
Dependent Claim
26 words
An epoxy type spherical particulate adhesive as set forth in any preceding claim, wherein the amount of the latent curing agent is 0.05 to l equivalent.
Claim 7
Dependent Claim
40 words
An epoxy type spherical particulate adhesive as set forth in any preceding claim, wherein the surfaces of the epoxy type spherical particles are covered with fine particles of an inorganic oxide having an average particle diameter smaller than 0.2 µm.
Claim 8
Dependent Claim
19 words
An epoxy type spherical particulate adhesive as set forth in claim 6, wherein the inorganic oxide is silicon oxide.
Claim 9
Dependent Claim
41 words
An epoxy type spherical particulate adhesive as set forth in claim 6 or claim 7, wherein the fine particles of the inorganic oxide are present in an amount of 0.05 to 5% by weight based on the epoxy type spherical particles.
Claim 10
Dependent Claim
38 words
An epoxy type spherical particulate adhesive as set forth in any preceding claim, wherein the epoxy type spherical particles have such a property that the epoxy type spherical particles can be cured by heating at 80 to 200°C.
Claim 11
Dependent Claim
30 words
l0. An epoxy type spherical particulate adhesive as set forth in any preceding claim, wherein the average particle diameter of the epoxy type spherical particles is l to 20 µm.
Claim 12
Dependent Claim
54 words
An epoxy type spherical particulate adhesive as set forth in any preceding claim, wherein the epoxy type spherical particles have such a particle size distribution that particles having a diameter of from 0.5 × (the average particle diameter) to l.5 × (the average particle diameter) constitute at least 90% by weight of total particles.
Claim 13
Dependent Claim
29 words
An epoxy type spherical particulate adhesive as set forth in any preceding claim, wherein the epoxy resin contains the latent curing agent compatibly in the interior of the particles.
Claim 14
Dependent Claim
48 words
A process for the preparation of an epoxy type spherical particulate adhesive comprising at least an epoxy resin as the main component, which comprises emulsifying or suspending an epoxy compound having a latent curing agent incorporated therein into a liquid composed mainly of water to form spherical particles.
Claim 15
Dependent Claim
48 words
A process for the preparation of an epoxy type spherical particulate adhesive comprising at least an epoxy resin as the main component, which comprises emulsifying or suspending an epoxy compound having a latent curing agent incorporated therein into a liquid composed mainly of water to form spherical particles.
Claim 16
Dependent Claim
55 words
A process for the preparation of an epoxy type spherical particulate adhesive according to claim l3, wherein fine particles of the epoxy compound containing the latent curing agent compatibly in the interior thereof, which are emulsified or suspended in the liquid composed mainly of water, are partially cured by a water-soluble amine type curing agent.
Claim 17
Dependent Claim
31 words
A process for the preparation of an epoxy type spherical particulate adhesive according to claim l3 or claim l4, wherein the latent curing agent is a condensation or addition type compound.
Claim 18
Dependent Claim
28 words
A process for the preparation of an epoxy type spherical particulate adhesive according to claim l3 or claim l4, wherein the latent curing agent is a phenolic compound.
Claim 19
Dependent Claim
39 words
A process for the preparation of an epoxy type spherical particulate adhesive according to claim l6, wherein the latent curing agent is an adduct of a bisphenol diglycidyl ether or a condensation product thereof and a polyhydric phenol compound.
Claim 20
Dependent Claim
90 words
A process for the preparation of an epoxy type spherical particulate adhesive comprising at least an epoxy resin as the main component, which comprises mixing an aqueous slurry obtained by emulsifying or suspending an epoxy compound containing a latent curing agent compatibly therein into a liquid composed mainly of water to form spherical particles, with a slurry of fine particles of an inorganic oxide having an average particle diameter smaller than 0.2 µm, and stirring the mixture to obtain an epoxy type spherical particulate adhesive covered with the inorganic oxide.
Claim 21
Dependent Claim
90 words
A process for the preparation of an epoxy type spherical particulate adhesive comprising at least an epoxy resin as the main component, which comprises mixing an aqueous slurry obtained by emulsifying or suspending an epoxy compound containing a latent curing agent compatibly therein into a liquid composed mainly of water to form spherical particles, with a slurry of fine particles of an inorganic oxide having an average particle diameter smaller than 0.2 µm, and stirring the mixture to obtain an epoxy type spherical particulate adhesive covered with the inorganic oxide.
Claim 22
Dependent Claim
52 words
A process for the preparation of an epoxy type spherical particulate adhesive according to claim l8, wherein fine particles of the epoxy compound containing the latent curing agent compatibly therein, which are emulsified or suspended in the liquid composed mainly of water, are partially cured by a water-soluble amine type curing agent.
Claim 23
Dependent Claim
31 words
A process for the preparation of an epoxy type spherical particulate adhesive according to claim l8 or claim l9, wherein the latent curing agent is a condensation or addition type compound.
Claim 24
Dependent Claim
29 words
2l. A process for the preparation of an epoxy type spherical particulate adhesive according to claim l8 or claim l9, wherein the latent curing agent is a phenolic compound.
Claim 25
Dependent Claim
39 words
A process for the preparation of an epoxy type spherical particulate adhesive according to claim 2l, wherein the latent curing agent is an adduct of a bisphenol diglycidyl ether or a condensation product thereof and a polyhydric phenol compound.
Claim 26
Dependent Claim
35 words
A process for the preparation of an epoxy type spherical particulate adhesive according to any one of claims l8 to 22, wherein the slurry of the fine particles of the inorganic oxide is silica sol.
References Cited (Backward Citations)
No citation records indexed.
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