US3203851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing highly filled compressed masses of fiber-like filler material and thermoplastic synthetic material and compressed bodies made of such compressed masses, particularly plates and laminations
Assignee: Vinypal SA
•
Filing: 1959-06-18
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Granted: 1965-08-31
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Expires: 1979-06-18
Abstract
No abstract record available.
Inventors
- 👤 Blau Karl-Ludwig
- 👤 Herr Alfons
- 👤 Lintner Josef
- 👤 Wilhelm Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:35
CPC Classifications
D; D21; D21J; D21J3/00; C; C08; C08J; C08J3/00; C08J3/20; C08J3/205; C08J3/2053; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A METHOD OF PRODUCING COMPRESSED BODIES OF POLYVINYLCHLORIDE REINFORCED WITH FIBERS, BY ADMIXING AN ALKALINE ADJUSTED PASTE OFSAID FIBERS WITH AN AQUEOUS DISPERSION OF POLYVINYLCHLORIDE: PRECIPATING SAID POLYVINYLCHLORIDE FROM SAID DISPERSION ONTO SAID FIBERS BY ADDING AN ACID-FORMING SALT AND THEREBY ACIDFYING SAID MIXTURE CAUSING SAID POLYVINYLCHLORIDE TO ADHERE TO SAID FIBERS; SAID MIXTURE BEING FORMED BY DISPERSING A FINELY POWDERED POLYVINYLCHLORIDE TOGETHER WITH A HIGH MOLECULAR WEIGHT ORGANIC ACID EMULSIFIER IN AN ALKALINE ADJUSTED FIBER PASTE WITH AGITATION, AND ADDING TO SAID MIXTURE AN AQUEOUS EMULSION OF A PLASTICIZER IN AN AMOUNT SUFFICIENT TO CAUSE SWELLING OF THE SURFACE OF SAID POLYVINLCHLORIDE PARTICLES; FILTERING WATER FROM SAID MIXTURE AND FORMING A MASS OF DRY FIBROUS MATERIAL LOADED WITH SAID POLYVINYLCHLORIDE; AND THEN PRESSING SAID FIBROUS MATERIAL UNDER PRESSURE AT AN ELEVATED TEMPERATURE.
Claim 2
Independent Claim
133 words
A METHOD OF PRODUCING COMPRESSED BODIES OF POLYVINYLCHLORIDE REINFORCED WITH FIBERS, BY ADMIXING AN ALKALINE ADJUSTED PASTE OFSAID FIBERS WITH AN AQUEOUS DISPERSION OF POLYVINYLCHLORIDE: PRECIPATING SAID POLYVINYLCHLORIDE FROM SAID DISPERSION ONTO SAID FIBERS BY ADDING AN ACID-FORMING SALT AND THEREBY ACIDFYING SAID MIXTURE CAUSING SAID POLYVINYLCHLORIDE TO ADHERE TO SAID FIBERS; SAID MIXTURE BEING FORMED BY DISPERSING A FINELY POWDERED POLYVINYLCHLORIDE TOGETHER WITH A HIGH MOLECULAR WEIGHT ORGANIC ACID EMULSIFIER IN AN ALKALINE ADJUSTED FIBER PASTE WITH AGITATION, AND ADDING TO SAID MIXTURE AN AQUEOUS EMULSION OF A PLASTICIZER IN AN AMOUNT SUFFICIENT TO CAUSE SWELLING OF THE SURFACE OF SAID POLYVINLCHLORIDE PARTICLES; FILTERING WATER FROM SAID MIXTURE AND FORMING A MASS OF DRY FIBROUS MATERIAL LOADED WITH SAID POLYVINYLCHLORIDE; AND THEN PRESSING SAID FIBROUS MATERIAL UNDER PRESSURE AT AN ELEVATED TEMPERATURE.
References Cited (Backward Citations)
US1836021A
Cited
US1919697A
Cited
US2373033A
Cited
US2569169A
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GB591403A
Cited
US2530441A
Cited
US2596364A
Cited
US2635045A
Cited
US2720476A
Cited
US2817617A
Cited
US2875115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |