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US4842768A
Expired / Lapsed
US
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Electrically conductive adhesive
Assignee: Kyowa Gas Chemical Industry Co Ltd
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Filing: 1986-01-15
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Granted: 1989-06-27
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Expires: 2006-01-15
Abstract
Abstract An electrically conductive adhesive, formed by polymerizing and cross-linking (a) a radically polymerizable ionic unsaturated monomer soluble in a mixture of a water-soluble polyhydric alcohol with water, (b) a trialkoxysilylalkyl (meth)acrylate represented by the general formula I: ##STR1## wherein R 1 denotes hydrogen atom or methyl group, R 2 an alkyl group of 1 or 2 carbon atoms, and n an integer of the value of 2 or 3, and (c) a (meth)acrylate represented by the general formula II: ##STR2## wherein R 1 denotes the same meaning as defined above, R 3 hydrogen atom or an alkyl group of 1 to 4 carbon atoms, and m an integer of the value of 1 to 23, in the presence of (d) a water-soluble polyhydric alcohol and (e) water.
Inventors
- 👤 Kozo Nakao
- 👤 Susumu Hirokawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:25
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/122; C; C08; C08G; C08G77/00; C08G77/04; C09; C09J; C09J143/00; C09J143/04; C09J4/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
256 words
An electrically conductive adhesive, formed by polymerizing and cross-linking (a) a radically polymerizable ionic unsaturated monomer soluble in a mixture of a water-soluble polyhydric alcohol with water, (b) A trialkoxysilylalkyl (meth)acrylate represented by the general formula I: ##STR7## wherein R 1 denotes a hydrogen atom or a methyl group, R 2 an alkyl group of 1 or 2 carbon atoms, and n an integer of the value of 2 or 3, and (c) a (meth)acrylate represented by the general formula II: ##STR8## wherein R 1 denotes the same meaning as defined above, R 3 a hydrogen atom or an alkyl group of 1 or 4 carbon atoms, and m an integer of the value of 1 to 23, in the presence of (d) a water-soluble polyhydric alcohol and (e) water; wherein the amount of (a) said radically polymerizable ionic unsaturated monomer is in the range of 10 to 40% by weight, that of (b) said trialkoxysilylalkyl (meth)acrylate of said general formula I in the range of 0.05 to 1% by weight, that of (c) said (meth)acrylate of said general formula II in the range of 2 to 30% by weight, that of (d) said water-soluble polyhydric alcohol in the range of 10 to 80% by weight, and that of (e) said water in the range of 5 to 40% by weight based on the total amounts; and wherein said radically polymerizable ionic unsaturated monomer is at least one member selected from the group consisting of unsaturated organic carboxylic acids, unsaturated organic sulfonic acids, and salts thereof.
Claim 2
Dependent Claim
256 words
An electrically conductive adhesive, formed by polymerizing and cross-linking (a) a radically polymerizable ionic unsaturated monomer soluble in a mixture of a water-soluble polyhydric alcohol with water, (b) A trialkoxysilylalkyl (meth)acrylate represented by the general formula I: ##STR7## wherein R 1 denotes a hydrogen atom or a methyl group, R 2 an alkyl group of 1 or 2 carbon atoms, and n an integer of the value of 2 or 3, and (c) a (meth)acrylate represented by the general formula II: ##STR8## wherein R 1 denotes the same meaning as defined above, R 3 a hydrogen atom or an alkyl group of 1 or 4 carbon atoms, and m an integer of the value of 1 to 23, in the presence of (d) a water-soluble polyhydric alcohol and (e) water; wherein the amount of (a) said radically polymerizable ionic unsaturated monomer is in the range of 10 to 40% by weight, that of (b) said trialkoxysilylalkyl (meth)acrylate of said general formula I in the range of 0.05 to 1% by weight, that of (c) said (meth)acrylate of said general formula II in the range of 2 to 30% by weight, that of (d) said water-soluble polyhydric alcohol in the range of 10 to 80% by weight, and that of (e) said water in the range of 5 to 40% by weight based on the total amounts; and wherein said radically polymerizable ionic unsaturated monomer is at least one member selected from the group consisting of unsaturated organic carboxylic acids, unsaturated organic sulfonic acids, and salts thereof.
Claim 3
Dependent Claim
33 words
An electrically conductive adhesive according to claim 1, wherein said radically polymerizable ionic unsaturated monomer is at least one member selected from the group consisting of unsaturated organic sulfonic acids and salts thereof.
Claim 4
Dependent Claim
27 words
An electrically conductive adhesive according to claim 2, wherein said organic sulfonic acid or a salt thereof is 3-sulfopropyl(meth)acrylate or 2-acrylamide-2-methylpropane sulfonic acid or a salt thereof.
Claim 5
Dependent Claim
17 words
An electrically conductive adhesive according to claim 1, wherein n in said general formula I is 3.
Claim 6
Dependent Claim
45 words
An electrically conductive adhesive according to claim 1, wherein R 3 in said general formula II is hydrogen or an alkyl group of 1 to 2 carbon atoms and m in the same general formula is an integer of the value of 1 to 9.
Claim 7
Dependent Claim
18 words
An electrically conductive adhesive according to claim 5, wherein R 1 in said general formula II is hydrogen.
Claim 8
Dependent Claim
20 words
An electrically conductive adhesive according to claim 5, wherein R 1 in said general formula II is a methyl group.
Claim 9
Dependent Claim
19 words
An electrically conductive adhesive according to claim 5, wherein the compound of said general formula II is 2-hydroxyethyl methacrylate.
Claim 10
Dependent Claim
15 words
An electrically conductive adhesive according to claim 1, wherein said water-soluble polyhydric alcohol is glycerol.
Claim 11
Dependent Claim
116 words
An electrically conductive adhesive according to claim 1, wherein the amount of (a) said radically polymerizable ionic unsaturated monomer is in the range of 15 to 30% by weight, that of (b) said trialkoxysilylalkyl(meth)acrylate of said general formula I in the range of 0.1 to 0.05% by weight based on the total amount of the monomeric reactants, that of (c) said (meth)acrylate of said general formula II in the range of 5 to 20% by weight based on the total amount of the monomeric reactants, that of (d) said water-soluble polyhydric alcohol in the range of 30 to 70% by weight, and that of (e) said water in the range of 7 to 30% by weight.
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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) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |