Patent US5376707A successfully refreshed from Google Patents.
US5376707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl chloride resin composition for powder molding and production thereof
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1992-10-13
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Granted: 1994-12-27
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Expires: 2012-10-13
Abstract
Abstract Disclosed herein is a polyvinyl chloride resin composition for powder molding which comprises granular polyvinyl chloride resin (as component A), particulate polyvinyl chloride resin (as component B), stabilizer, plasticizer, and saccharide (as component C). Disclosed also herein is a process for producing said resin composition by mixing granular polyvinyl chloride resin (as component A), particulate polyvinyl chloride resin (as component B), stabilizer, plasticizer, and saccharide (as component C). The resin composition is suitable for the production of covering materials for automotive interior.
Inventors
- 👤 Yoshihiro Nakatsuji
- 👤 Toshio Igarashi
- 👤 Akira Wakatsuki
- 👤 Yuu Shida
- 👤 Hikaru Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:29
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08J5/00; C08J5/12; C08J9/04; C08J9/06; C08J9/10; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06; C08J2427/00; C08L2205/00; C08L2205/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
112 words
A polyvinyl chloride resin composition for powder molding, said composition being produced by the process which comprises (1) dry-blending A. granular polyvinyl chloride resin having an average particle diameter of from 100 to 150 μm, D. stabilizer, E. plasticizer, and, optionally, F. blowing agent, (2) separately blending B. particulate polyvinyl chloride resin latex having an average particle diameter of from 0.1 to 10 μm, and C. an aqueous solution of saccharide in the amount of 0.05-0.6 parts by weight per 100 parts by weight of components A and B combined and drying the resultant blend, and (3) incorporating the resultant blend of B and C into the resultant blend of step (1).
Claim 2
Dependent Claim
112 words
A polyvinyl chloride resin composition for powder molding, said composition being produced by the process which comprises (1) dry-blending A. granular polyvinyl chloride resin having an average particle diameter of from 100 to 150 μm, D. stabilizer, E. plasticizer, and, optionally, F. blowing agent, (2) separately blending B. particulate polyvinyl chloride resin latex having an average particle diameter of from 0.1 to 10 μm, and C. an aqueous solution of saccharide in the amount of 0.05-0.6 parts by weight per 100 parts by weight of components A and B combined and drying the resultant blend, and (3) incorporating the resultant blend of B and C into the resultant blend of step (1).
Claim 3
Dependent Claim
23 words
A resin composition as defined in claim 1, wherein the weight ratio of component B to component A is from 3/97 to 20/80.
Claim 4
Dependent Claim
108 words
A process for producing a polyvinyl chloride resin composition for powder-molding which comprises (1) dry-blending A. granular polyvinyl chloride resin having an average particle diameter of from 100 to 150 μm, D. stabilizer, E. plasticizer, and, optionally, F. blowing agent, (2) separately blending B. particulate polyvinyl chloride resin latex having an average particle diameter of from 0.1 to 10 μm, and C. an aqueous solution of saccharide in the amount of 0.05-0.6 parts by weight per 100 parts by weight of components A and B combined and drying the resultant blend, and (3) incorporating the resultant blend of B and C into the resultant blend of step (1).
Claim 5
Dependent Claim
108 words
A process for producing a polyvinyl chloride resin composition for powder-molding which comprises (1) dry-blending A. granular polyvinyl chloride resin having an average particle diameter of from 100 to 150 μm, D. stabilizer, E. plasticizer, and, optionally, F. blowing agent, (2) separately blending B. particulate polyvinyl chloride resin latex having an average particle diameter of from 0.1 to 10 μm, and C. an aqueous solution of saccharide in the amount of 0.05-0.6 parts by weight per 100 parts by weight of components A and B combined and drying the resultant blend, and (3) incorporating the resultant blend of B and C into the resultant blend of step (1).
Claim 6
Dependent Claim
21 words
A process according to claim 3 wherein the weight ratio of component B to component A is from 3/97 to 20/80.
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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) | 1997-12-26 | 1998-06-27 | 1998-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-26 | 2002-06-27 | 2002-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-26 | 2006-06-27 | 2006-12-27 | $7700.00 | Window Closed / Lapsed |