Patent US4243788A successfully refreshed from Google Patents.
US4243788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isocyanurate solutions
Assignee: Beazer East Inc
•
Filing: 1979-01-29
•
Granted: 1981-01-06
•
Expires: 1999-01-29
Abstract
Abstract Isocyanurate polymers having improved physical properties are disclosed. Unsaturated isocyanates are prepared by reacting a polyisocyanate with a monohydric alcohol containing a vinylidene group to form an isocyanate-containing urethane and then reacting the isocyanate-containing urethane with tris(2-hydroxyethyl)isocyanurate to form an unsaturated isocyanurate. The unsaturated isocyanurate may be homopolymerized or copolymerized with ethylenically unsaturated compounds to form isocyanurate polymers having an excellent combination of physical properties.
Inventors
- 👤 Erich Kuehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:04
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F20/36; C08F18/00; C08F18/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
111 words
A solution of an ethylenically unsaturated isocyanurate characterized by the formula: ##STR4## wherein R is a monovalent radical obtained by removing the hydroxyl group from hydroxylpropyl methacrylate, hydroxylethyl methacrylate, hydroxylethyl acrylate, or hydroxypropyl acrylate and R' is a divalent organic radical free of a group which is reactive with an isocyanate group and is obtained by removing two isocyanate groups from an aromatic diisocyanate, dissolved in a solvent selected from the group consisting of styrene, methylmethacrylate, divinylbenzene, ethylmethacrylate, ethylacrylate, methylacrylate, 2-ethylhexylacrylate, 2-ethylhexyl-methacrylate, butylacrylate, butylmethacrylate, cyclohexylmethacrylate, cyclohexylacrylate, t-butyl styrene, chlorostyrene, acrylonitrile, vinylidene chloride, vinyl acetate, vinyl toluene, tetrahydrofurfuryl methacrylate, vinyl pyrrolidone, diethylene-glycoldiacrylate, triethylene-glycoldiacrylate, allylmethacrylate, diallylfurmate, 1,3-butyleneglycoldimethacrylate, polyethylene glycol diacrylate, and mixtures thereof.
Claim 2
Dependent Claim
111 words
A solution of an ethylenically unsaturated isocyanurate characterized by the formula: ##STR4## wherein R is a monovalent radical obtained by removing the hydroxyl group from hydroxylpropyl methacrylate, hydroxylethyl methacrylate, hydroxylethyl acrylate, or hydroxypropyl acrylate and R' is a divalent organic radical free of a group which is reactive with an isocyanate group and is obtained by removing two isocyanate groups from an aromatic diisocyanate, dissolved in a solvent selected from the group consisting of styrene, methylmethacrylate, divinylbenzene, ethylmethacrylate, ethylacrylate, methylacrylate, 2-ethylhexylacrylate, 2-ethylhexyl-methacrylate, butylacrylate, butylmethacrylate, cyclohexylmethacrylate, cyclohexylacrylate, t-butyl styrene, chlorostyrene, acrylonitrile, vinylidene chloride, vinyl acetate, vinyl toluene, tetrahydrofurfuryl methacrylate, vinyl pyrrolidone, diethylene-glycoldiacrylate, triethylene-glycoldiacrylate, allylmethacrylate, diallylfurmate, 1,3-butyleneglycoldimethacrylate, polyethylene glycol diacrylate, and mixtures thereof.
Claim 3
Dependent Claim
9 words
A solution of claim 1 wherein R' is tolylyl.
Claim 4
Dependent Claim
23 words
A solution of claim 2 wherein said solvent is selected from the group consisting of styrene, methylmethacrylate, divinylbenzene, ethylmethacrylate, ethylacrylate, and mixture thereof.
Claim 5
Dependent Claim
17 words
A solution of claim 3 comprising from about 20 to about 80 parts by weight of styrene.
References Cited (Backward Citations)
US2952665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |