Patent US3923720A successfully refreshed from Google Patents.
US3923720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricated thermoplastic resin
Assignee: Monsanto Co
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Filing: 1973-12-06
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Granted: 1975-12-02
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Expires: 1993-12-06
Abstract
Abstract This disclosure relates to improved thermoplastic resin compositions which contain an acrylic homopolymer or copolymer as a lubricant.
Inventors
- 👤 Antony W M Coaker
- 👤 Elmer E Cowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:10
CPC Classifications
C; C08; C08L; C08L69/00; C08L1/00; C08L1/08; C08L1/10; C08L1/14; C08L1/26; C08L101/00; C08L23/00; C08L23/02; C08L25/00; C08L25/02; C08L25/04; C08L27/00; C08L27/02; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12; C08L51/00; C08L51/04; C08L55/00; C08L55/02; C08L57/00; C08L77/00; C08L23/04; C08L23/06; C08L23/08; C08L23/0846; C08L23/0853; C08L33/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
88 words
A COMPOSITION OF MATTER COMPRISING A THERMIOPLASTIC POLYCONDENSATION RESIN AND A LIQUID COPOLYMER OF (1) FROM ABOUT 5 TO ABOUT 95% BY WEIGHT OF AN ALKYLACRYLATE WHEREIN THE ALKYLRADICAL CONTAINS FROM 1 TO ABOUT 12 CARBON ATOMS AND (2) FROM ABOUT 95 TO ABOUT 5% BY WEIGHT OF A DISSIMILAR ALKYLACRYLATE WHEREIN THE ALKYLRADICAL CONTAINS FROM ABOUT 3 TO ABOUT 24 CARBON ATOMS, WHEREIN THE ACRYLIC COPOLYMER IS PRESENT IN AMOUNTS OF FROM ABOUT 0.001 TO 8.0 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF POLYCONDENSATION RESIN.
Claim 2
Dependent Claim
88 words
A COMPOSITION OF MATTER COMPRISING A THERMIOPLASTIC POLYCONDENSATION RESIN AND A LIQUID COPOLYMER OF (1) FROM ABOUT 5 TO ABOUT 95% BY WEIGHT OF AN ALKYLACRYLATE WHEREIN THE ALKYLRADICAL CONTAINS FROM 1 TO ABOUT 12 CARBON ATOMS AND (2) FROM ABOUT 95 TO ABOUT 5% BY WEIGHT OF A DISSIMILAR ALKYLACRYLATE WHEREIN THE ALKYLRADICAL CONTAINS FROM ABOUT 3 TO ABOUT 24 CARBON ATOMS, WHEREIN THE ACRYLIC COPOLYMER IS PRESENT IN AMOUNTS OF FROM ABOUT 0.001 TO 8.0 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF POLYCONDENSATION RESIN.
Claim 3
Dependent Claim
15 words
A composition as defined in claim 1 wherein the polycondensation resin is a polycarbonate resin.
Claim 4
Dependent Claim
21 words
A composition of claim 2 wherein the liquid copolymer has an average molecular weight of from about 2,000 to about 6,000.
Claim 5
Dependent Claim
21 words
A composition of claim 2 wherein the liquid copolymer has an average molecular weight of from about 3,500 to about 5,000.
Claim 6
Dependent Claim
17 words
A composition of claim 2 wherein the liquid copolymer is a copolymer of ethylacrylate and 2-ethylhexyl acrylate.
Claim 7
Dependent Claim
68 words
A composition as defined in claim 1 wherein the liquid copolymer is a copolymer of (1) from about 5 to about 95% by weight of an alkyl acrylate wherein the alkyl radical contains from 1 to about 12 carbon atoms, and (2) from about 95 to about 5% by weight of a dissimilar alkyl acrylate wherein the alkyl radical contains from about 3 to about 24 carbon atoms.
Claim 8
Dependent Claim
69 words
A composition as defined in claim 1 wherein the liquid copolymer is a copolymer of (1) from about 20 to about 50% by weight of an alkyl acrylate wherein the alkyl radical contains from about 2 to about 8 carbon atoms, and (2) from about 80 to about 50% by weight of a dissimilar alkyl acrylate wherein the alkyl radical contains from about 6 to about 12 carbon atoms.
Claim 9
Dependent Claim
33 words
A composition as defined in claim 1 wherein the liquid copolymer is present in amounts of from about 0.1 to about 4.0 parts by weight per 100 parts by weight of said resin.
Claim 10
Dependent Claim
26 words
A composition as defined in claim 5 wherein the liquid copolymer is a copolymer of 30 parts of ethyl acrylate and 70 parts of 2-ethylhexyl acrylate.
Claim 11
Dependent Claim
26 words
A composition as defined in claim 1 wherein the liquid copolymer is a copolymer of 50 parts of 2-ethylhexyl acrylate and 50 parts of octadecyl acrylate.
Claim 12
Dependent Claim
26 words
A composition as defined in claim 5 wherein the liquid copolymer is a copolymer of 40 parts of ethyl acrylate and 60 parts of 2-ethylhexyl acrylate.
Claim 13
Dependent Claim
26 words
A composition as defined in claim 1 wherein the liquid copolymer is a copolymer of 90 parts of methyl acrylate and 10 parts of butyl acrylate.
Claim 14
Dependent Claim
26 words
A composition as defined in claim 1 wherein the liquid copolymer is a copolymer of 80 parts of butyl acrylate and 20 parts of laurel acrylate.
Claim 15
Dependent Claim
26 words
A composition as defined in claim 1 wherein the liquid copolymer is a copolymer of 40 parts of butyl acrylate and 60 parts of laurel acrylate.
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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |