US3932401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed acrylic acid/methacrylic acid esters of tris (hydroxyalkyl) isocyanurates
Assignee: 3M Co
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Filing: 1974-01-31
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Granted: 1976-01-13
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Expires: 1994-01-31
Abstract
Abstract The reaction product of a mixture of acrylic acid and methacrylic acid with tris (hydroxyalkyl) isocyanurates is found to have a reduced tendency to crystallize, making the reaction product especially useful in photopolymerizable compositions.
Inventors
- 👤 Carl John Berg
- 👤 Edward John Deviny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:02
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C07D251/34; C08; C08F; C08F120/00; C08F120/02; C08F120/10; C08F120/34; C08F120/36; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
72 words
The non-crystalline reaction product of 1. ##SPC3## where R is alkylene of one to four carbon atoms, with 2. a mixture comprising acrylic acid and methacrylic acid; the weight-ratio of acrylic acid to methacrylic acid in the reaction mixture being between about 80:20 and 20:80, and sufficient acrylic acid and methacrylic acid being included in the reaction mixture to esterify at least 80 percent of the hydroxyl groups on the isocyanurate ring.
Claim 2
Dependent Claim
72 words
The non-crystalline reaction product of 1. ##SPC3## where R is alkylene of one to four carbon atoms, with 2. a mixture comprising acrylic acid and methacrylic acid; the weight-ratio of acrylic acid to methacrylic acid in the reaction mixture being between about 80:20 and 20:80, and sufficient acrylic acid and methacrylic acid being included in the reaction mixture to esterify at least 80 percent of the hydroxyl groups on the isocyanurate ring.
Claim 3
Dependent Claim
64 words
The non-crystalline reaction product of 1. ##SPC4## where R is ethylene, with 2. a mixture comprising acrylic acid and methacrylic acid; the weight-ratio of acrylic acid to methacrylic acid in the mixture being between 70:30 and 50:50, and sufficient acrylic acid and methacrylic acid being included in the reaction mixture to esterify at least 80 percent of the hydroxyl groups on the isocyanurate ring.
Claim 4
Dependent Claim
64 words
The non-crystalline reaction product of 1. ##SPC4## where R is ethylene, with 2. a mixture comprising acrylic acid and methacrylic acid; the weight-ratio of acrylic acid to methacrylic acid in the mixture being between 70:30 and 50:50, and sufficient acrylic acid and methacrylic acid being included in the reaction mixture to esterify at least 80 percent of the hydroxyl groups on the isocyanurate ring.
References Cited (Backward Citations)
US3821098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |