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Patent US4426504A successfully refreshed from Google Patents.
US4426504A
Expired / Lapsed
US
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Flexible dicyclopentenyl oxyethyl methacrylate curable compositions
Assignee: Rohm and Haas Co
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Filing: 1982-06-07
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Granted: 1984-01-17
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Expires: 2002-06-07
Abstract
Abstract Disclosed is an acrylic curable composition of improved flexibility that cures rapidly at room temperature in the presence of acrylic catalysts. The composition comprises between about 70% and 95% by weight dicyclopentenyl oxyethyl methacrylate and between about 5% and 30% of a linear polyalkylene glycol diacrylate or dimethacrylate cross-linking agent. Excellent flexibility and strength are achieved by use of the named cross-linking agents within the critical range set forth.
Inventors
- 👤 Uma S. Nandi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:37
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/26; C08F220/28; C08F220/282; C08F222/00; C08F222/10; C08F222/1006; C08F222/102
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
68 words
An acrylic curable composition of improved flexibility that cures rapidly at room temperature in the presence of an acrylic catalyst, which comprises on a curable weight percent solids basis: (a) between about 70% and 95% dicyclopentenyl oxyethyl methacrylate, and (b) between about 5% and 30% of a linear poly(oxyalkylene) glycol diacrylate or dimethacrylate cross-linking agent which contains from between about 4 to about 33 oxyalkylene groups per molecule.
Claim 2
Dependent Claim
68 words
An acrylic curable composition of improved flexibility that cures rapidly at room temperature in the presence of an acrylic catalyst, which comprises on a curable weight percent solids basis: (a) between about 70% and 95% dicyclopentenyl oxyethyl methacrylate, and (b) between about 5% and 30% of a linear poly(oxyalkylene) glycol diacrylate or dimethacrylate cross-linking agent which contains from between about 4 to about 33 oxyalkylene groups per molecule.
Claim 3
Dependent Claim
23 words
The composition of claim 1 wherein the proportion of said cross-linking agent is between about 10% and 20% on a curable solids basis.
Claim 4
Dependent Claim
16 words
The composition of claim 1 wherein said cross-linking agent is a polyoxyethylene glycol diacrylate or dimethacrylate.
Claim 5
Dependent Claim
16 words
The composition of claim 1 wherein said acrylic catalysts comprise a peroxy initiator and an accelerator.
Claim 6
Dependent Claim
13 words
The composition of claim 1 wherein said composition also contains particulate inert filler.
Claim 7
Independent Claim
64 words
A method for rapidly curing an acrylic curable composition of improved flexibility which comprises blending an acrylic catalyst, between about 70% and 95% of dicyclopentenyl oxyethyl methacrylate, and between about 5 and 30% of a linear poly(oxyalkylene) glycol diacrylate or dimethylacrylate cross-linking agent which contains between about 4 and 33 oxyalkylene groups per molecule, said percentages being on a curable weight percent solids basis.
Claim 8
Independent Claim
64 words
A method for rapidly curing an acrylic curable composition of improved flexibility which comprises blending an acrylic catalyst, between about 70% and 95% of dicyclopentenyl oxyethyl methacrylate, and between about 5 and 30% of a linear poly(oxyalkylene) glycol diacrylate or dimethylacrylate cross-linking agent which contains between about 4 and 33 oxyalkylene groups per molecule, said percentages being on a curable weight percent solids basis.
Claim 9
Dependent Claim
15 words
The method of claim 7 wherein said cross-linker is a poly(oxyethylene) glycol diacrylate or dimethacrylate.
Claim 10
Dependent Claim
21 words
The method of claim 6 wherein the proportion of cross-linker is between about 10% and 20% on a curable solids basis.
References Cited (Backward Citations)
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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) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |