US4560579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coating of substrates with heat curable coating
Assignee: WR Grace and Co
•
Filing: 1985-01-22
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Granted: 1985-12-24
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Expires: 2005-01-22
Abstract
Abstract A heat activatable adhesive or sealant organic resin composition comprising (1) an epoxy resin containing at least two ##STR1## (2) a thermal initiator selected from the group consisting of diaryliodonium salts and diaryliodonium salts combined with a pinacol, and (3) a thermoplastic adhesive material selected from the group consisting of polyesters, polyvinyl acetals, polyamides, butadiene-acrylonitrile copolymers, styrene-butadiene copolymers, styrene-isoprene copolymers, styrene-ethylene-butylene copolymers, ethylene-vinyl acetate copolymers, ethylene-ethyl acrylate copolymers, ethylene propylene diene monomer and mixtures thereof. The composition after application to the parts to be bonded or sealed forms a thermoset bond or seal on application of heat thereto, preferably by electromagnetic techniques including dielectric and induction heating.
Inventors
- 👤 Bahram Siadat
- 👤 Charles R. Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:38
CPC Classifications
C; C09; C09J; C09J4/00; C09J4/06; C08; C08F; C08F291/00; C08F299/00; C08F299/02; C08F299/022; C08F299/024; C09J7/00; C09J7/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
97 words
A process for forming a coating on a substrate which comprises admixing a heat curable composition comprising (1) an epoxy resin containing at least two ##STR9## (2) a thermal initiator selected from the group consisting of diaryliodonium salts and diaryliodonium salts in combination with a pinacol, and (3) a thermoplastic adhesive material selected from the group consisting of polyesters, polyvinyl acetals, polyamides, butadiene-acrylonitrile copolymers, styrene-butadiene copolymers, styrene-isoprene copolymers, styrene-ethylene-butylene copolymers, ethylene-vinyl acetate copolymers, ethylene-ethyl acrylate copolymers, and mixtures thereof, coating said admixture on a substrate and heating said coating in the range 70°-200° C. to effect curing.
Claim 2
Dependent Claim
97 words
A process for forming a coating on a substrate which comprises admixing a heat curable composition comprising (1) an epoxy resin containing at least two ##STR9## (2) a thermal initiator selected from the group consisting of diaryliodonium salts and diaryliodonium salts in combination with a pinacol, and (3) a thermoplastic adhesive material selected from the group consisting of polyesters, polyvinyl acetals, polyamides, butadiene-acrylonitrile copolymers, styrene-butadiene copolymers, styrene-isoprene copolymers, styrene-ethylene-butylene copolymers, ethylene-vinyl acetate copolymers, ethylene-ethyl acrylate copolymers, and mixtures thereof, coating said admixture on a substrate and heating said coating in the range 70°-200° C. to effect curing.
Claim 3
Dependent Claim
16 words
The process according to claim 1 wherein the heating step is carried out by electromagnetic heating.
Claim 4
Dependent Claim
14 words
The process according to claim 2 wherein the electromagnetic heating is by dielectric heating.
Claim 5
Dependent Claim
14 words
The process according to claim 2 wherein the electromagnetic heating is by induction heating.
Claim 6
Dependent Claim
9 words
A sealant resulting from the process of claim 1.
Claim 7
Dependent Claim
9 words
An adhesive resulting from the process of claim 1.
Claim 8
Dependent Claim
133 words
A process for adhering two substrates which comprises contacting said substrates with a solid, heat curable composition comprising (1) an epoxy resin containing at least two ##STR10## (2) a thermal initiator selected from the group consisting of diaryliodonium salts and diaryliodonium salts in combination with a pinacol, and (3) a thermoplastic adhesive material selected from the group consisting of polyesters, polyvinyl acetals, polyamides, butadiene-acrylonitrile copolymers, styrene-butadiene copolymers, styrene-isoprene copolymers, styrene-ethylene-butylene copolymers, ethylene-vinyl acetate copolymers, ethylene-ethyl acrylate copolymers, and mixtures thereof, heating said composition to a temperature whereas said composition becomes sufficiently plastic to act as a thermoplastic adhesive between said substrates, said temperature being below the decomposition temperature of the thermal initiator and thereafter heating to a higher temperature, sufficient to decompose the thermal initiator and form a thermoset adhesive between the substrates.
Claim 9
Dependent Claim
133 words
A process for adhering two substrates which comprises contacting said substrates with a solid, heat curable composition comprising (1) an epoxy resin containing at least two ##STR10## (2) a thermal initiator selected from the group consisting of diaryliodonium salts and diaryliodonium salts in combination with a pinacol, and (3) a thermoplastic adhesive material selected from the group consisting of polyesters, polyvinyl acetals, polyamides, butadiene-acrylonitrile copolymers, styrene-butadiene copolymers, styrene-isoprene copolymers, styrene-ethylene-butylene copolymers, ethylene-vinyl acetate copolymers, ethylene-ethyl acrylate copolymers, and mixtures thereof, heating said composition to a temperature whereas said composition becomes sufficiently plastic to act as a thermoplastic adhesive between said substrates, said temperature being below the decomposition temperature of the thermal initiator and thereafter heating to a higher temperature, sufficient to decompose the thermal initiator and form a thermoset adhesive between the substrates.
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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) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |