US4197219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous polyurethane-phenolic-formaldehyde resin emulsions for use as adhesives, primers and surface coatings
Assignee: Lord Corp
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Filing: 1979-01-17
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Granted: 1980-04-08
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Expires: 1999-01-17
Abstract
Abstract Stable aqueous emulsions useful as coatings, primers for promoting vinyl plastisol adhesion to metal, and adhesives for bonding vinyl to metal with high environmental resistance, are described, which comprise: (a) aqueous polyurethane latexes substantially free of emulsifier and containing about 0.02 to 1% of a salt type group from the class consisting of ##STR1## (b) an aqueous casein cocondensed phenolic-formaldehyde resin emulsion; and (c) an ionic fluorocarbon surfactant; in proportions of about 25 to 99% (a), about 1 to 50% (b) and about 1 to 10,000 parts per million (c), by weight of the total composition. Such emulsions are useful per se as coatings and primers and single package adhesives. Two-package adhesives having superior properties are provided, in which the foregoing emulsions as part A are cured by a crosslinker, part B, in a ratio A:B in the range from about 100 to 2.5A:1B. The crosslinking agents may be glyoxal, melamineformaldehyde resins, or any formaldehyde donor.
Inventors
- 👤 Dennis J. Damico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:49
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B15/082; C; C09; C09D; C09D161/00; C09D161/04; C09D161/06; C09D161/14; B32B7/00; B32B7/04; B32B7/12; C09J; C09J175/00; C09J175/04; C08; C08L; C08L2666/00; C08L2666/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/3158; Y10T428/31605; Y10T428/31678; Y10T428/31688; Y10T428/31692
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
92 words
An aqueous composition comprising: (a) an aqueous polyurethane latex substantially free of emulsifier and containing from about 0.02 to about 1% by weight of the dispersed phase of a salt type group selected from the class consisting of ##STR4## (b) an aqueous casein-cocondensed phenolic-formaldehyde resin emulsion; and (c) a non-ionic fluorocarbon surfactant; said composition being in the form of a stable emulsion containing about 25 to about 99% (a), about 1 to about 50% (b) and about 1 to about 10,000 parts per million (c), all by weight of the total composition.
Claim 2
Dependent Claim
92 words
An aqueous composition comprising: (a) an aqueous polyurethane latex substantially free of emulsifier and containing from about 0.02 to about 1% by weight of the dispersed phase of a salt type group selected from the class consisting of ##STR4## (b) an aqueous casein-cocondensed phenolic-formaldehyde resin emulsion; and (c) a non-ionic fluorocarbon surfactant; said composition being in the form of a stable emulsion containing about 25 to about 99% (a), about 1 to about 50% (b) and about 1 to about 10,000 parts per million (c), all by weight of the total composition.
Claim 3
Dependent Claim
23 words
A composition according to claim 1 having a total solids content in the range from about 15 to about 30 percent by weight.
Claim 4
Dependent Claim
14 words
A composition according to claim 1 having incorporated therein at least one formaldehyde donor.
Claim 5
Dependent Claim
47 words
A composition according to claim 3 wherein the amount of said formaldehyde donor is in the range from 1 part by weight per 2.5 parts by weight of (a), (b), and (c) to 1 part by weight per 100 parts by weight of (a), (b), and (c).
Claim 6
Dependent Claim
17 words
A composition according to claim 4 wherein the aqueous casein-cocondensed phenolic-formaldehyde resin emulsion is derived from resorcinol.
Claim 7
Dependent Claim
34 words
A water-based composition according to claim 1 wherein said polyurethane latex has been chain extended with a compound having reactive hydrogen atoms selected from the group consisting of glycols, diamines, amino alcohols and water.
Claim 8
Dependent Claim
24 words
A water-based composition according to claim 1 comprising, in addition, a third polymeric emulsion, said third polymeric emulsion being different from (a) and (b).
Claim 9
Dependent Claim
15 words
A water-based composition according to claim 7 wherein the third emulsion is an acrylic emulsion.
Claim 10
Dependent Claim
17 words
A water-based composition according to claim 1 wherein the polyurethane latex is derived from an aromatic diisocyanate.
Claim 11
Dependent Claim
14 words
A water-based composition according to claim 9 wherein the aromatic diisocyanate is toluene diisocyanate.
Claim 12
Dependent Claim
61 words
A two-part water-based composition for laminating vinyl to metal in which part A is a composition according to claim 1, and part B is a crosslinking agent selected from the group consisting of glyoxal and formaldehyde and formaldehyde donors selected from the group consisting of polyformaldehyde, ureaformaldehyde resins, dimethylol urea, and hexamethylene tetramine, paraformaldehyde, s-trioxane and anhydroformaldehyde-aniline, and alkyl modified melamines.
Claim 13
Dependent Claim
46 words
A water-based composition according to claim 11 wherein the alkyl modified melamine crosslinker is derived from hexamethoxymethyl melamine by substituting at least one of the methoxy groups thereof with a group selected from the group consisting of lower alkoxy groups other than methoxy, and hydroxyl groups.
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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) | 1983-04-08 | 1983-10-08 | 1984-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-08 | 1987-10-08 | 1988-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-08 | 1991-10-08 | 1992-04-08 | $7700.00 | Window Closed / Lapsed |