US4331793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocurable ambient curing polyepoxide coating and adhesive compositions and method of using them
Assignee: Rohm and Haas Co
•
Filing: 1981-03-19
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Granted: 1982-05-25
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Expires: 2001-03-19
Abstract
Abstract Resin-forming polyepoxides are mixed with polyoxazolidinyl compounds or polymers containing pendant oxazolidinyl groups in which the carbon atom in the 2-position of the heterocyclic ring is substituted with saturated hydrocarbon groups, such as dialkyl, or with an alkylene group forming a saturated ring with the carbon atom in the 2-position of the oxazolidinyl ring to form, in the absence of water, a stable composition which can be stored in closed containers for months without undergoing gelation. When such compositions are spread into films and the films exposed to moisture at ambient temperature, e.g., to ambient air having a relative humidity of at least 20% and temperature of about 15° to 25° C., the polymer serves to react with and cure the polyepoxide.
Inventors
- 👤 William D. Emmons
- 👤 Wayne E. Feely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:45
CPC Classifications
C; C09; C09D; C09D163/00; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5046; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/26; C08F220/32; C08F220/325
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
159 words
A vinyl addition copolymer, adapted to be used as the binder for a coating, impregnating, or adhesive composition, comprising an anhydrous organic solvent solution copolymer of monoethylenically unsaturated monomers comprising (1) at least one monomer selected from glycidyl acrylate, glycidyl methacrylate, glycidyl vinyl ether, and glycidyl vinyl sulfide, (2) at least one monomer of the formula: ##STR7## wherein R is CH 3 or H, m is 2 or 3, and R 1 and R 2 individually are separate alkyl groups having at least one carbon atom or are joined directly together to form a C 4 to C 5 alkylene group, and (3) optionally, other monomer(s) inert to the epoxy group(s) in (1) and the cyclic oxazolidinyl group(s) in (2); the amount of glycidyl monomer of (1) in the copolymer being sufficient to provide at least about one equivalent of epoxy content in the copolymer for each equivalent therein of amine content attributable to the cyclic groups of (2).
Claim 2
Dependent Claim
159 words
A vinyl addition copolymer, adapted to be used as the binder for a coating, impregnating, or adhesive composition, comprising an anhydrous organic solvent solution copolymer of monoethylenically unsaturated monomers comprising (1) at least one monomer selected from glycidyl acrylate, glycidyl methacrylate, glycidyl vinyl ether, and glycidyl vinyl sulfide, (2) at least one monomer of the formula: ##STR7## wherein R is CH 3 or H, m is 2 or 3, and R 1 and R 2 individually are separate alkyl groups having at least one carbon atom or are joined directly together to form a C 4 to C 5 alkylene group, and (3) optionally, other monomer(s) inert to the epoxy group(s) in (1) and the cyclic oxazolidinyl group(s) in (2); the amount of glycidyl monomer of (1) in the copolymer being sufficient to provide at least about one equivalent of epoxy content in the copolymer for each equivalent therein of amine content attributable to the cyclic groups of (2).
Claim 3
Dependent Claim
43 words
A copolymer according to claim 1 which comprises at least about 5% by weight of (2) monomer of the formula I as defined therein, and sufficient (1) monomer to provide at least about 1 epoxy equivalent for each amine equivalent of (2) monomer.
Claim 4
Dependent Claim
36 words
A copolymer according to claim 1 comprising about 16% by weight of glycidyl methacrylate, about 11% by weight of 2,2-dimethyl-oxazolidinylethyl methacrylate, about 30% by weight of methyl methacrylate, and about 43% by weight of butyl methacrylate.
References Cited (Backward Citations)
US3291775A
Cited
US3037006A
Cited
US3208981A
Cited
US3342786A
Cited
US3547886A
Cited
US3640957A
Cited
US3630996A
Cited
US3716520A
Cited
US3787380A
Cited
US4075023A
Cited
US3749683A
Cited
US3979406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-24 | 1985-11-23 | 1986-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-24 | 1989-11-23 | 1990-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-24 | 1993-11-23 | 1994-05-25 | $7700.00 | Window Closed / Lapsed |