US4283315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gramophone record composition
Assignee: Tate and Lyle PLC
•
Filing: 1979-11-06
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Granted: 1981-08-11
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Expires: 1999-11-06
Abstract
Abstract Gramophone records are prepared from a vinyl polymer composition containing a fatty acid soap of an alkaline earth metal or zinc, sugar or polyol fatty acid esters and fatty acid mixed glycerides and is free of heavy metal ions.
Inventors
- 👤 Kenneth James
- 👤 Frederick J. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:40
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/68; G11B3/70; G11B3/705; C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08K5/10; C08K5/101; C08K5/103; Y; Y10; Y10S; Y10S260/00; Y10S260/15
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
54 words
A stabilised gramophone record composition comprising a vinyl polymer containing by weight from 0.3 to 1.5% of a fatty acid soap of an alkaline earth metal or zinc; 0.3 to 1.85% of sugar or polyol fatty acid esters; and 0.15 to 1.10% of fatty acid mixed glycerides; and being free of heavy metal ions.
Claim 2
Dependent Claim
54 words
A stabilised gramophone record composition comprising a vinyl polymer containing by weight from 0.3 to 1.5% of a fatty acid soap of an alkaline earth metal or zinc; 0.3 to 1.85% of sugar or polyol fatty acid esters; and 0.15 to 1.10% of fatty acid mixed glycerides; and being free of heavy metal ions.
Claim 3
Dependent Claim
24 words
A composition according to claim 1, in which the soap is derived from a mixture of fatty acids obtained from a naturally occurring triglyceride.
Claim 4
Dependent Claim
27 words
A composition according to claim 1, in which the fatty acid moiety of any of the ester, soap and glyceride components has an iodine value of 20-60.
Claim 5
Dependent Claim
36 words
A composition according to claim 3, in which the mixed glycerides comprise at least 70% by weight of mono- and di-glycerides with a free fatty acid content of not more than 3% expressed as oleic acid.
Claim 6
Dependent Claim
17 words
A composition according to claim 1, in which the vinyl polymer is a vinyl chloride-vinyl acetate copolymer.
Claim 7
Dependent Claim
15 words
A composition according to claim 1, in which the fatty acid esters include sucrose esters.
Claim 8
Dependent Claim
19 words
A composition according to claim 1 or claim 6, in which the soap content is from 0.3 to 1.0%.
Claim 9
Dependent Claim
19 words
A composition according to claim 6, in which the sucrose ester to glyceride ratio is from 1.3:1 to 2.2:1.
Claim 10
Dependent Claim
25 words
A composition according to claim 6, in which the soap, ester and glyceride mixture is at least in part obtained from a transesterification of sucrose.
Claim 11
Dependent Claim
18 words
A composition according to claim 9, in which the soap has been formed in situ in the glycerides.
Claim 12
Dependent Claim
11 words
A composition according to claim 6, also containing a lactitol ester.
Claim 13
Dependent Claim
62 words
An antistatic stabilising powder composition for incorporation into a gramophone record plastics composition, comprising 6 to 30 parts by weight of a fatty acid soap of an alkaline earth metal or zinc; 6 to 37 parts by weight of sugar or polyol fatty acid esters and 3 to 22 parts by weight of fatty acid mixed glycerides, together with an anti-caking agent.
Claim 14
Dependent Claim
62 words
An antistatic stabilising powder composition for incorporation into a gramophone record plastics composition, comprising 6 to 30 parts by weight of a fatty acid soap of an alkaline earth metal or zinc; 6 to 37 parts by weight of sugar or polyol fatty acid esters and 3 to 22 parts by weight of fatty acid mixed glycerides, together with an anti-caking agent.
Claim 15
Dependent Claim
10 words
A composition according to claim 12 further containing carbon black.
Claim 16
Dependent Claim
26 words
A composition according to claim 13, containing carbon black and the soap, ester and glyceride mixture in a ratio of from 1:5 to 2:1 by weight.
Claim 17
Dependent Claim
53 words
A gramophone record formed of a plastics composition containing by weight from 0.3 to 1.5% of a fatty acid soap of an alkaline earth metal or zinc; 0.3 to 1.85% of sugar or polyol fatty acid esters; and 0.15 to 1.10% of fatty acid mixed glycerides; and being free of heavy metal ions.
Claim 18
Dependent Claim
53 words
A gramophone record formed of a plastics composition containing by weight from 0.3 to 1.5% of a fatty acid soap of an alkaline earth metal or zinc; 0.3 to 1.85% of sugar or polyol fatty acid esters; and 0.15 to 1.10% of fatty acid mixed glycerides; and being free of heavy metal ions.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-10 | 1985-02-09 | 1985-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-10 | 1989-02-09 | 1989-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-10 | 1993-02-09 | 1993-08-11 | $7700.00 | Window Closed / Lapsed |