Patent US4613660A successfully refreshed from Google Patents.
US4613660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyol/polyepoxide/polyurethane adhesive
Assignee: Ashland LLC
•
Filing: 1985-02-19
•
Granted: 1986-09-23
•
Expires: 2005-02-19
Abstract
Abstract Fast curing adhesives which are free of solvent and have high heat resistant bonding strength composed of mixtures of polyols, polyepoxides and polyisocyanates are described.
Inventors
- 👤 Anil B. Goel
- 👤 Harvey J. Richards
- 👤 Robert A. Grimm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:23
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/6705; C08G18/08; C08G18/16; C08G18/22; C08G18/40; C08G18/4009; C08G18/4045; C09; C09J; C09J175/00; C09J175/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
88 words
An adhesive composition comprising a mixture of a polyether polyol, a polyepoxide, a polyisocyanate and a polyurethane catalyst selected from the group consisting of an organo tin compound and a mixture of an organo tin compound and an organo iron compound, wherein in equivalent functionality ratio of hydroxyl to epoxy groups in the polyol and the polyepoxide is within the range of from 98/2 to 50/50 and the equivalent ratio of isocyanate to combined hydroxyl and epoxy equivalent is in the range of from about 0.8 to 2.0.
Claim 2
Dependent Claim
88 words
An adhesive composition comprising a mixture of a polyether polyol, a polyepoxide, a polyisocyanate and a polyurethane catalyst selected from the group consisting of an organo tin compound and a mixture of an organo tin compound and an organo iron compound, wherein in equivalent functionality ratio of hydroxyl to epoxy groups in the polyol and the polyepoxide is within the range of from 98/2 to 50/50 and the equivalent ratio of isocyanate to combined hydroxyl and epoxy equivalent is in the range of from about 0.8 to 2.0.
Claim 3
Dependent Claim
33 words
The composition of claim 1 wherein the polyurethane catalyst is a member selected from the group consisting of tin (II) octoate and a mixture of tin (II) octoate and iron (III) acetyl acetonate.
Claim 4
Dependent Claim
27 words
The composition of claim 2 wherein the polyurethane catalyst is present in from 0.001 to 5% by weight based on the weight of the polyol and polyepoxide.
Claim 5
Dependent Claim
12 words
The composition of claim 3 wherein the polyisocyanate is an isocyanate prepolymer.
Claim 6
Dependent Claim
14 words
The composition of claim 4 wherein the polyepoxide is a diglycidyl ether of bisphenol-A.
Claim 7
Dependent Claim
31 words
The composition of claim 4 wherein the polyepoxide is one resulting from reaction of the diglycidyl ether of bisphenol-A and a 1:2 molar reaction product of butane diol and maleic anhydride.
Claim 8
Dependent Claim
14 words
The composition of claim 4 wherein the polyol is bis hydroxyethyl dimerized linoleic acid.
References Cited (Backward Citations)
US3136731A
Cited
US3242108A
Cited
US3525779A
Cited
US3510439A
Cited
US3565972A
Cited
US3637903A
Cited
US3634327A
Cited
US3636133A
Cited
US3676407A
Cited
US4080401A
Cited
US4386191A
Cited
US4562227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-22 | 1990-03-24 | 1990-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-22 | 1994-03-24 | 1994-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-22 | 1998-03-24 | 1998-09-23 | $7700.00 | Window Closed / Lapsed |