Patent US3719638A successfully refreshed from Google Patents.
US3719638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation curable acrylic urethane monomers
Assignee: Individual
•
Filing: 1969-10-29
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Granted: 1973-03-06
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Expires: 1989-10-29
Abstract
Abstract A radiation curable composition is provided by reacting about one mole of an organic diisocyanate with about one mole of a hydroxyacrylate to form a mono-urethane adduct which is subsequently reacted with a styrene-allyl alcohol copolymer having a molecular weight between about 200 and 30,000, the reaction product being essentially free of unreacted isocyanate groups.
Inventors
- 👤 T Huemmer
- 👤 T Miranda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:24
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6212; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08G18/8064; C08G18/81; C08G18/8141; C08G18/815; C08G18/8158
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
85 words
An acrylic urethane reaction product which is stable at room temperature and curable by electron beam radiation to yield a solvent-resistant solid polymer comprising the reaction product of one hydroxy equivalent of a styrene-allyl alcohol copolymer having a molecular weight of from about 200 to about 30,000 and up to one mole of a mono-urethane adduct formed by reacting at least one mole of a hydroxy acrylate, and about one mole of an organic diisocyanate, said reaction product being essentially free of unreacted isocyanate groups.
Claim 2
Dependent Claim
85 words
An acrylic urethane reaction product which is stable at room temperature and curable by electron beam radiation to yield a solvent-resistant solid polymer comprising the reaction product of one hydroxy equivalent of a styrene-allyl alcohol copolymer having a molecular weight of from about 200 to about 30,000 and up to one mole of a mono-urethane adduct formed by reacting at least one mole of a hydroxy acrylate, and about one mole of an organic diisocyanate, said reaction product being essentially free of unreacted isocyanate groups.
Claim 3
Dependent Claim
16 words
A reaction product in accordance with claim 1, in which the diisocyanate is an aromatic diisocyanate.
Claim 4
Dependent Claim
14 words
A reaction product in accordance with claim 2, wherein the diisocyanate is toluene diisocyanate.
Claim 5
Dependent Claim
39 words
A reaction product in accordance with claim 1, wherein the hydroxy acrylate is selected from the group consisting of hydroxyalkyl acrylates and hydroxyalkyl methacrylates, wherein the alkyl group contains at least two, but not more than six carbon atoms.
Claim 6
Dependent Claim
16 words
A reaction product in accordance with claim 4, wherein the hydroxyacrylate contains a primary hydroxyl group.
Claim 7
Dependent Claim
31 words
A reaction product in accordance with claim 1, wherein the isocyanate contains intermediate urethane groups, and is the isocyanate terminated reaction product of a diisocyanate and a hydroxy containing organic compound.
Claim 8
Dependent Claim
19 words
A reaction product in accordance with claim 1, wherein said copolymer contains at least 3 hydroxy groups per molecule.
Claim 9
Dependent Claim
33 words
A reaction product in accordance with claim 1, formed by the reaction of about 1 mole of hydroxyethyl acrylate, one mole of toluene diisocyanate and one hydroxy equivalent of saiD styrene-allyl alcohol copolymer.
Claim 10
Independent Claim
86 words
A method of preparing an acrylic urethane reaction product which is stable at room temperature and curable by electron beam radiation to yield a solvent-resistant solid polymer, comprising as a first step reacting approximately equimolar quantities of a hydroxy acrylate and an organic diisocyanate, and a second step, reacting the product of the first step with a styrene-allyl alcohol copolymer having a molecular weight of from about 200 to about 30,000, the quantity of said copolymer being sufficient to react with essentially all free isocyanate groups.
Claim 11
Independent Claim
86 words
A method of preparing an acrylic urethane reaction product which is stable at room temperature and curable by electron beam radiation to yield a solvent-resistant solid polymer, comprising as a first step reacting approximately equimolar quantities of a hydroxy acrylate and an organic diisocyanate, and a second step, reacting the product of the first step with a styrene-allyl alcohol copolymer having a molecular weight of from about 200 to about 30,000, the quantity of said copolymer being sufficient to react with essentially all free isocyanate groups.
Claim 12
Dependent Claim
18 words
A method as described in claim 9, wherein the second step is carried out in a polymerizable solvent.
Claim 13
Dependent Claim
38 words
A method as described in claim 9, wherein said hydroxy acrylate is selected from the group consisting of hydroxyalkyl acrylates and hydroxyalkyl methacrylates, wherein the alkyl group contains at least two, but no more than six carbon atoms.
Claim 14
Dependent Claim
14 words
A method as described in claim 11, wherein said hydroxy acrylate is hydroxyethyl acrylate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |