Patent US4318095A successfully refreshed from Google Patents.
US4334038A
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Shaping of plastic materials containing polymeric lubricant
Assignee: Akzona Inc
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Filing: 1981-01-30
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Granted: 1982-06-08
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Expires: 2001-01-30
Abstract
Abstract This disclosure relates to a process for forming plastics from a melt of a mixture of plastics, stabilizers, antioxidants and lubricants, wherein the lubricants comprise a derivative of a copolymer of unsaturated polycarbonic acids or the anhydrides thereof and alpha -olefins having an average of at least 28 carbon atoms.
Inventors
- 👤 Heinz Beck
- 👤 Karl H. Frassek
- 👤 Egenius A. Giezen
- 👤 Eduard M. Verhulst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:24
CPC Classifications
C; C08; C08L; C08L101/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
59 words
A process for shaping plastic materials, wherein a molded body is produced from a melt of a mixture comprising a plastic material, stabilizers and/or antioxidants, pigments and/or fillers, flowing agents and a lubricant, wherein the lubricants comprise a copolymer of unsaturated polycarboxylic acids, or anhydrides thereof, and α-olefins having an average carbon number of at least 28 carbon atoms.
Claim 2
Dependent Claim
59 words
A process for shaping plastic materials, wherein a molded body is produced from a melt of a mixture comprising a plastic material, stabilizers and/or antioxidants, pigments and/or fillers, flowing agents and a lubricant, wherein the lubricants comprise a copolymer of unsaturated polycarboxylic acids, or anhydrides thereof, and α-olefins having an average carbon number of at least 28 carbon atoms.
Claim 3
Dependent Claim
16 words
A process according to claim 1, wherein the copolymer derivative is esterified with a monofunctional alcohol.
Claim 4
Dependent Claim
23 words
A process according to claim 2, wherein the copolymer derivative is esterified with a monofunctional alcohol having from 2 to 26 carbon atoms.
Claim 5
Dependent Claim
15 words
A process according to claim 3, wherein the copolymer derivative is esterified to a monoester.
Claim 6
Dependent Claim
18 words
A process according to claim 3, wherein the copolymer derivative is at least partially esterified to a diester.
Claim 7
Dependent Claim
25 words
A process according to claim 1 wherein the molar ratio of unsaturated polycarboxylic acid to α-olefin is in a range of from 0.5:1 to 2.0:1.
Claim 8
Dependent Claim
19 words
A process according to claim 1, wherein the unsaturated polycarboxylic acid or anhydride is maleic acid or maleic anhydride.
Claim 9
Dependent Claim
21 words
A process according to claim 1, wherein the average molecular weight of the unesterified copolymer derivative is from 1,300 to 100,000.
Claim 10
Dependent Claim
15 words
A process according to claim 8, wherein the molecular weight is from 5,000 to 30,000.
Claim 11
Dependent Claim
28 words
A process according to claim 1, wherein the lubricant is mixed with stabilizers and/or antioxidants, pigments and/or fillers and flowing agents prior to formulation with a plastic material.
Claim 12
Dependent Claim
26 words
A process according to claim 10, wherein the mixture of lubricant stabilizers and/or antioxidants, pigments and/or fillers and flowing agents is prepared in a melted state.
References Cited (Backward Citations)
DE2727329A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-07 | 1985-12-07 | 1986-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-07 | 1989-12-07 | 1990-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-07 | 1993-12-07 | 1994-06-08 | $7700.00 | Window Closed / Lapsed |