US3846361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph record composition and process
Assignee: Individual
•
Filing: 1972-06-14
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Granted: 1974-11-05
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Expires: 1992-06-14
Abstract
Abstract A phonograph record composition including polyvinyl chloride thermoplastic resin alone or in combination with a copolymer of vinyl chloride and vinyl acetate, toluene in an amount sufficient to partially solvate the resin and cause the resin to fuse more quickly and completely on heating, a heat stabilizer for the resin and a colorant for the phonograph record composition. A phonograph record is prepared by blending the thermoplastic resin with the toluene to form a dry blend, mixing the heat stabilizer and colorant into the dry blend, extruding the dry blend to form a hot preform and molding the hot preform into a phonograph record.
Inventors
- 👤 A Sands
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:55
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L2205/00; C08L2205/02
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
63 words
A PHONOGRAPH RECORD COMPOSITION COMPRISING A THERMOPLASTIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND A COMBINATION OF POLYVINYL CHLORIDE AND A COPOLYMER OF VINYL CHLORIDE AND VINYL ACETATE, TOLUENE IN AN AMOUNT OF ABOUT 2 TO 5 PARTS FOR EACH 100 PARTS OF THERMOPLASTIC RESIN, A HEAT STABILIZER FOR THE THERMOPLASTIC RESIN AND A COLORANT FOR THE PHONOGRAPH RECORD COMPOSITION.
Claim 2
Dependent Claim
63 words
A PHONOGRAPH RECORD COMPOSITION COMPRISING A THERMOPLASTIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND A COMBINATION OF POLYVINYL CHLORIDE AND A COPOLYMER OF VINYL CHLORIDE AND VINYL ACETATE, TOLUENE IN AN AMOUNT OF ABOUT 2 TO 5 PARTS FOR EACH 100 PARTS OF THERMOPLASTIC RESIN, A HEAT STABILIZER FOR THE THERMOPLASTIC RESIN AND A COLORANT FOR THE PHONOGRAPH RECORD COMPOSITION.
Claim 3
Dependent Claim
35 words
The phonograph record composition of claim 1 in which the thermoplastic resin is a combination of polyvinyl chloride and up to about 90 percent by weight of a copolymer of vinyl chloride and vinyl acetate.
Claim 4
Dependent Claim
33 words
The phonograph record composition of claim 1 in which the copolymer contains about 85 to 95 percent by weight of vinyl chloride and about 5 to 15 percent by weight of vinyl acetate.
Claim 5
Dependent Claim
23 words
The phonograph record composition of claim 1 in which the heat stabilizer is a metal salt of a C12- C18 monocarboxylic aliphatic acid.
Claim 6
Dependent Claim
14 words
The phonograph record composition of claim 1 in which the colorant is carbon black.
Claim 7
Dependent Claim
20 words
The phonograph record composition of claim 1 including a lubricant to improve the flow properties of the composition during processing.
Claim 8
Dependent Claim
15 words
The phonograph record composition of claim 6 in which the lubricant is a synthetic wax.
Claim 9
Dependent Claim
79 words
A phonograph record composition comprising a thermoplastic resin containing about 100 to 10 percent by weight polyvinyl chloride and about 0 to 90 percent by weight of a copolymer of vinyl chloride and vinyl acetate, toluene in an amount of about 2 to 5 parts for each 100 parts of thermoplastic resin, a heat stabilizer for the thermoplastic resin selected from the group consisting of metal salts of C12 - C18 monocarboxylic aliphatic acids and a carbon black colorant.
Claim 10
Dependent Claim
79 words
A phonograph record composition comprising a thermoplastic resin containing about 100 to 10 percent by weight polyvinyl chloride and about 0 to 90 percent by weight of a copolymer of vinyl chloride and vinyl acetate, toluene in an amount of about 2 to 5 parts for each 100 parts of thermoplastic resin, a heat stabilizer for the thermoplastic resin selected from the group consisting of metal salts of C12 - C18 monocarboxylic aliphatic acids and a carbon black colorant.
Claim 11
Dependent Claim
30 words
The phonograph record composition of claim 8 in which the heat stabilizer is present in an amount of about 0.5 to 1.25 parts for each 100 parts of thermoplastic resin.
Claim 12
Dependent Claim
29 words
The phonograph record composition of claim 8 in which the colorant is present in an amount of about 0.25 to 0.50 parts for each 100 parts of thermoplastic resin.
Claim 13
Dependent Claim
27 words
The phonograph record composition of claim 8 including a wax lubricant in an amount of about 0.4 to 1.0 parts for each 100 parts of thermoplastic resin.
Claim 14
Dependent Claim
18 words
The phonograph record composition of claim 11 in which the wax lubricant is a distearyl amide synthetic wax.
Claim 15
Dependent Claim
96 words
A process for preparing a phonograph record comprising dry blending a thermoplastic resin selected from the group consisting of polyvinyl chloride and a combination of polyvinyl chloride and a copolymer of vinyl chloride and vinyl acetate with toluene in an amount of about 2 to 5 parts for each 100 parts of thermoplastic resin to form a dry blend, mixing a heat stabilizer for the thermoplastic resin and a colorant for the phonograph record into the dry blend, extruding the dry blend to form a hot preform and molding the hot preform into a phonograph record.
Claim 16
Dependent Claim
96 words
A process for preparing a phonograph record comprising dry blending a thermoplastic resin selected from the group consisting of polyvinyl chloride and a combination of polyvinyl chloride and a copolymer of vinyl chloride and vinyl acetate with toluene in an amount of about 2 to 5 parts for each 100 parts of thermoplastic resin to form a dry blend, mixing a heat stabilizer for the thermoplastic resin and a colorant for the phonograph record into the dry blend, extruding the dry blend to form a hot preform and molding the hot preform into a phonograph record.
Claim 17
Dependent Claim
33 words
The process of claim 13 in which the thermoplastic resin is a combination of polyvinyl chloride and up to about 90 percent by weight of a copolymer of vinyl chloride and vinyl acetate.
Claim 18
Dependent Claim
22 words
The process of claim 13 in which the heat stabilizer is a metal salt of a C12 - C18 monocarboxylic aliphatic acid.
Claim 19
Dependent Claim
30 words
The process of claim 13 in which a lubricant is blended into the dry blend to improve the flow properties of the dry blend during the extrusion and molding operations.
Claim 20
Dependent Claim
13 words
The process of claim 12 in which the lubricant is a synthetic wax.
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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |