Patent US4286508A successfully refreshed from Google Patents.
US4480079A
Expired / Lapsed
US
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Copolymerization of unsaturated urethane monomers
Assignee: Ashland Inc
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Filing: 1982-11-01
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Granted: 1984-10-30
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Expires: 2002-11-01
Abstract
Abstract Moulded plastics products are produced by in-mould copolymerization of methyl methacrylate with a polyurethane polyacrylate or polymethacrylate derived from a hydroxyalkyl acrylate or methacrylate by reaction of hydroxyl groups thereof with the isocyanate groups of a polyisocyanate or urethane polyisocyanate having isocyanate functionality greater than 2.0.
Inventors
- 👤 Michael L. Orton
- 👤 William I. Spurr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:49
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/006; C08F283/008; C08F290/00; C08F290/08; C08F290/14; C08F290/147
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
118 words
A method of producing a moulded plastics product by in-mould copolymerisation of an unsaturated urethane compound and a vinyl monomer copolymerisable therewith, wherein (a) the unsaturated urethane compound is a polyurethane polyacrylate or polymethacrylate resin derived from a hydroxyalkyl acrylate or methacrylate by reaction of hydroxyl groups thereof with the isocyanate groups of a polyisocyanate from the group consisting of (i) polyisocyanates free from urethane groups and having an isocyanate functionality greater than 2.0 and (ii) urethane polyisocyanate derived from a polyisocyanate by reaction thereof with the hydroxyl groups of an aliphatic alcohol having up to 3 hydroxyl groups, the said urethane polyisocyanates having an isocyanate functionality greater than 2.0 and (b) the vinyl monomer is methyl methacrylate.
Claim 2
Independent Claim
118 words
A method of producing a moulded plastics product by in-mould copolymerisation of an unsaturated urethane compound and a vinyl monomer copolymerisable therewith, wherein (a) the unsaturated urethane compound is a polyurethane polyacrylate or polymethacrylate resin derived from a hydroxyalkyl acrylate or methacrylate by reaction of hydroxyl groups thereof with the isocyanate groups of a polyisocyanate from the group consisting of (i) polyisocyanates free from urethane groups and having an isocyanate functionality greater than 2.0 and (ii) urethane polyisocyanate derived from a polyisocyanate by reaction thereof with the hydroxyl groups of an aliphatic alcohol having up to 3 hydroxyl groups, the said urethane polyisocyanates having an isocyanate functionality greater than 2.0 and (b) the vinyl monomer is methyl methacrylate.
Claim 3
Dependent Claim
36 words
A method according to claim 1, wherein the polyurethane polyacrylate or polymethacrylate resin is derived from a hydroxyalkyl acrylate or methacrylate by reaction of hydroxyl groups thereof with the isocyanate groups of a polymethylene polyphenyl polyisocyanate.
Claim 4
Dependent Claim
43 words
A method according to claim 1, wherein the polyurethane polyacrylate or polymethacrylate resin is derived from a polyurethane polyisocyanate which is in turn derived from a polyisocyanate having an isocyanate functionality greater than 2.0 by reaction thereof with an aliphatic diol or triol.
Claim 5
Dependent Claim
20 words
A method according to claim 3, wherein the polyisocyanate reacted with the diol or triol is a polymethylene polyphenyl polyisocyanate.
Claim 6
Dependent Claim
27 words
A method according to claim 1, wherein claims, characterised in that the hydroxyalkyl acrylate or methacrylate contains from 2 to 4 carbon atoms in the hydroxyalkyl group.
Claim 7
Dependent Claim
42 words
A method according to claim 1, wherein claims, characterised in that the proportion of the polyurethane polyacrylate and/or polymethacrylate resin is in the range from 10 to 90 parts by weight per 100 total parts of methyl methacrylate and the said resin.
Claim 8
Dependent Claim
35 words
A method according to claim 6, wherein the proportion of the said resin is in the range from 25 to 50 parts by weight per 100 total parts of methyl methacrylate and the said resin.
Claim 9
Dependent Claim
16 words
A method according to claim 1, wherein the mixture to be polymerised contains an organic polymer.
Claim 10
Dependent Claim
13 words
A method according to claim 8, wherein the organic polymer is poly(methyl methacrylate).
Claim 11
Dependent Claim
38 words
A method according to claim 8 or claim 9, characterised in that the proportion of the polymer is from 1 to 25 parts by weight per 100 total parts of methyl methacrylate and polyurethane acrylate and/or methacrylate resin.
Claim 12
Dependent Claim
16 words
A method according to claim 1, wherein the mixture to be polymerised contains an inorganic filler.
Claim 13
Dependent Claim
12 words
A method according to claim 11, wherein the filler comprises glass fibre.
Claim 14
Dependent Claim
109 words
A polymerisable composition comprising an unsaturated urethane compound and a vinyl monomer copolymerisable therewith, wherein (a) the unsaturated urethane compound is a polyurethane polyacrylate or polymethacrylate resin derived from a hydroxyalkyl acrylate or methacrylate by reaction of hydroxyl groups thereof with the isocyanate groups of a polyisocyanate from the group consisting of (i) polymethylene polyphenyl polyisocyanates having an isocyanate functionality greater than 2.0 and (ii) urethane polyisocyanates derived from a polymethylene polyphenyl polyisocyanate by reaction thereof with the hydroxyl groups of an aliphatic alcohol having up to 3 hydroxyl groups, the said urethane polyisocyanates having an isocyanate functionality greater than 2.0 and (b) the vinyl monomer is methyl methacrylate.
Claim 15
Dependent Claim
109 words
A polymerisable composition comprising an unsaturated urethane compound and a vinyl monomer copolymerisable therewith, wherein (a) the unsaturated urethane compound is a polyurethane polyacrylate or polymethacrylate resin derived from a hydroxyalkyl acrylate or methacrylate by reaction of hydroxyl groups thereof with the isocyanate groups of a polyisocyanate from the group consisting of (i) polymethylene polyphenyl polyisocyanates having an isocyanate functionality greater than 2.0 and (ii) urethane polyisocyanates derived from a polymethylene polyphenyl polyisocyanate by reaction thereof with the hydroxyl groups of an aliphatic alcohol having up to 3 hydroxyl groups, the said urethane polyisocyanates having an isocyanate functionality greater than 2.0 and (b) the vinyl monomer is methyl methacrylate.
Claim 16
Dependent Claim
45 words
A composition according to claim 13, wherein the polyurethane polyacrylate or polymethacrylate resin is derived from a polyurethane polyisocyanate which is in turn derived from a polymethylene polyphenyl polyisocyanate having an isocyanate functionality greater than 2.0 by reaction thereof with an aliphatic diol or triol.
Claim 17
Dependent Claim
35 words
A composition according to claim 13 or claim 14, wherein the polyurethane polyacrylate or polymethacrylate resin is derived from a hydroxyalkyl acrylate or methacrylate containing from 2 to 4 carbon atoms in the hydroxyalkyl group.
Claim 18
Dependent Claim
35 words
A composition according to claim 13, wherein the proportion of the polyurethane polyacrylate and/or polymethacrylate resin is from 10 to 90 parts by weight per 100 total parts of methyl methacrylate and the said resin.
Claim 19
Dependent Claim
32 words
A composition according to claim 16, wherein the proportion of the said resin is from 25 to 50 parts by weight per 100 total parts of methyl methacrylate and the said resin.
Claim 20
Dependent Claim
14 words
A composition according to claim 18, wherein the composition also comprises an organic polymer.
Claim 21
Dependent Claim
13 words
A composition according to claim 18, wherein the organic polymer is poly(methyl methacrylate).
Claim 22
Dependent Claim
35 words
A composition according to claim 18, wherein the proportion of the organic polymer is from 1 to 25 parts by weight per 100 total parts of methyl methacrylate and the polyurethane acrylate and/or methacrylate resin.
Claim 23
Dependent Claim
17 words
A method according to claim 1, wherein the isocyanate functionality of the polyisocyanate is at least 2.2.
Claim 24
Dependent Claim
17 words
A method according to claim 21, wherein the isocyanate functionality of the polyisocyanate is at least 2.5.
Claim 25
Dependent Claim
17 words
A composition according to claim 13, wherein the isocyanate functionality of the polyisocyanate is at least 2.2.
Claim 26
Dependent Claim
17 words
A composition according to claim 23, wherein the isocyanate functionality of the polyisocyanate is at least 2.5
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-30 | 1988-04-30 | 1988-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-30 | 1992-04-30 | 1992-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-30 | 1996-04-30 | 1996-10-30 | $7700.00 | Window Closed / Lapsed |