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Patent US4175177A successfully refreshed from Google Patents.
US4175177A
Expired / Lapsed
US
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Crosslinkable copolymer of a lactone and a polyfunctional acrylate
Assignee: Union Carbide Corp
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Filing: 1978-02-24
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Granted: 1979-11-20
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Expires: 1998-02-24
Abstract
Abstract Thermoplastic, crosslinkable copolymer is produced by reacting an active-hydrogen containing initiator with a lactone monomer, such as epsilon-caprolactone, and a polyfunctional acrylate, such as neopentyl glycol diacrylate. The copolymer can be crosslinked by exposure to ionizing or actinic radiation or by free-radical peroxide catalysts. The degree of crosslinking can be controlled to produce a material which is thermoplastically processable and displays modified rheological properties which make it more easily processable than the corresponding lactone homopolymer.
Inventors
- 👤 James E. Potts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:14
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08; G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
102 words
Process of producing a thermoplastic crosslinkable copolymer which comprises reacting, at a temperature of from 25 to 300° C., an active-hydrogen containing initiator with a molar excess of a monomer mixture comprising: (A) from 90 to 99.5 weight percent of a lactone monomer of the formula ##STR5## wherein n is an integer having a value from about 3 to 6, at least n+2 of the R's are hydrogen, and the remaining R's are each alkyl of 1 to 10 carbon atoms; and (B) from 0.5 to 10 weight percent of a polyfunctional acrylate monomer containing a plurality of acrylate or methacrylate groups.
Claim 2
Dependent Claim
102 words
Process of producing a thermoplastic crosslinkable copolymer which comprises reacting, at a temperature of from 25 to 300° C., an active-hydrogen containing initiator with a molar excess of a monomer mixture comprising: (A) from 90 to 99.5 weight percent of a lactone monomer of the formula ##STR5## wherein n is an integer having a value from about 3 to 6, at least n+2 of the R's are hydrogen, and the remaining R's are each alkyl of 1 to 10 carbon atoms; and (B) from 0.5 to 10 weight percent of a polyfunctional acrylate monomer containing a plurality of acrylate or methacrylate groups.
Claim 3
Dependent Claim
39 words
Process for producing a thermoplastic crosslinkable copolymer as claimed in claim 1, wherein said monomer mixture comprises from 95 to 99.5 weight percent of said lactone monomer and from 0.5 to 5 weight percent of said polyfunctional acrylate monomer.
Claim 4
Dependent Claim
17 words
Process for producing a thermoplastic crosslinkable copolymer as claimed in claim 1 wherein said lactone is epsilon-caprolactone.
Claim 5
Dependent Claim
20 words
Process for producing a thermoplastic crosslinkable copolymer as claimed in claim 3, wherein said polyfunctional acrylate is neopentyl glycol diacrylate.
Claim 6
Dependent Claim
19 words
Process for producing a thermoplastic crosslinkable copolymer as claimed in claim 3, wherein said polyfunctional acrylate is trimethylolpropane trimethacrylate.
Claim 7
Dependent Claim
19 words
Process for producing a thermoplastic crosslinkable copolymer as claimed in claim 3, wherein said polyfunctional acrylate is 3'-acryloxy-2',2'-dimethylpropyl 3-acryloxy-2,2-dimethylpropionate.
Claim 8
Dependent Claim
13 words
The thermoplastic crosslinkable copolymer which is produced by the process of claim 1.
Claim 9
Dependent Claim
13 words
The thermoplastic crosslinkable copolymer which is produced by the process of claim 2.
Claim 10
Dependent Claim
13 words
The thermoplastic crosslinkable copolymer which is produced by the process of claim 3.
Claim 11
Dependent Claim
13 words
The thermoplastic crosslinkable polymer which is produced by the process of claim 4.
Claim 12
Dependent Claim
13 words
The thermoplastic crosslinkable copolymer which is produced by the process of claim 5.
Claim 13
Dependent Claim
13 words
The thermoplastic crosslinkable copolymer which is produced by the process of claim 6.
Claim 14
Dependent Claim
23 words
A thermoplastic crosslinkable copolymer as claimed in claim 7, wherein said thermoplastic crosslinkable copolymer has a reduced viscosity of from 0.1 to 2.
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) | 1982-11-19 | 1983-05-21 | 1983-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-19 | 1987-05-21 | 1987-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-19 | 1991-05-21 | 1991-11-20 | $7700.00 | Window Closed / Lapsed |