US2980643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastisol composition comprising a thermoplastic vinyl resin and filter cake
Assignee: Westinghouse Electric Corp
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Filing: 1956-07-23
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Granted: 1961-04-18
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Expires: 1976-07-23
Abstract
No abstract record available.
Inventors
- 👤 Leonard E Edelman
- 👤 James W Forbes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:13
CPC Classifications
C; C08; C08K; C08K13/00; C08K13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A VINYL PLASTISOL COMPOSITION COMPRISING AS ITS ESSENTIAL INGREDIENTS (A) A FINELY DIVIDED THERMOPLASTIC POLYVINYL RESIN SELECTED FROM AT LEAST ONE OF THE GROUP CONSISTING OF POLYVINYL CHLORIDE, POLYVINYL ACETATE, POLYVINYL ACETAL, POLYVINYL BUTYRAL, POLYETHYLENE, POLYVINYLIDENE CHLORIDE, AND COPOLYMERS OF VINYL CHLORIDE AND VINYL ACETATE, (B) A HIGH BOILING POINT LIQUID ORGANIC ESTER PLASTICIZER IN WHICH SAID POLYVINYL RESIN IS INSOLUBLE EXCEPT AT ELEVATED TEMPERATURES, (C) A FINELY DIVIDED INORGANIC FILLER SELECTED FROM AT LEAST ONE OF THE GROUP CONSISTING OF CALCIUM CARBONATE, SILICA FLOUR, ALUMINUM SILICATE, AND MICA FLOUR, AND (D) A FILTER CAKE COMPRISING (1) A FINELY DIVIDED FILTER-AID SELECTED FROM THE GROUP CONSISTING OF CHARCOAL AND DIATOMACEOUS EARTH, AND (2) AN ORGANIC ESTER PLASTICIZER SELECTED FROM THE GROUP CONSISTING OF DIBUTYL PHTHALATE AND DIOCTYL PHTHALATE, SAID ORGANIC ESTER PLASTICIZER (2) BEING DISPERSED THROUGHOUT THE FILTER CAKE, THE WEIGHT RATIO OF PLASTICIZER (B) PLUS PLASTICIZER (2) TO SAID POLYVINYL RESIN BEING WITHIN THE RANGE OF ABOUT FROM 1.25:1 TO 1.75:1, AND THE WEIGHT RATIO OF FILLER (C) PLUS FILTER-AID (1) TO SAID POLYVINYL RESIN BEING WITHIN THE RANGE OF ABOUT FROM 2.5:1 TO 4:1.
Claim 2
Dependent Claim
186 words
A VINYL PLASTISOL COMPOSITION COMPRISING AS ITS ESSENTIAL INGREDIENTS (A) A FINELY DIVIDED THERMOPLASTIC POLYVINYL RESIN SELECTED FROM AT LEAST ONE OF THE GROUP CONSISTING OF POLYVINYL CHLORIDE, POLYVINYL ACETATE, POLYVINYL ACETAL, POLYVINYL BUTYRAL, POLYETHYLENE, POLYVINYLIDENE CHLORIDE, AND COPOLYMERS OF VINYL CHLORIDE AND VINYL ACETATE, (B) A HIGH BOILING POINT LIQUID ORGANIC ESTER PLASTICIZER IN WHICH SAID POLYVINYL RESIN IS INSOLUBLE EXCEPT AT ELEVATED TEMPERATURES, (C) A FINELY DIVIDED INORGANIC FILLER SELECTED FROM AT LEAST ONE OF THE GROUP CONSISTING OF CALCIUM CARBONATE, SILICA FLOUR, ALUMINUM SILICATE, AND MICA FLOUR, AND (D) A FILTER CAKE COMPRISING (1) A FINELY DIVIDED FILTER-AID SELECTED FROM THE GROUP CONSISTING OF CHARCOAL AND DIATOMACEOUS EARTH, AND (2) AN ORGANIC ESTER PLASTICIZER SELECTED FROM THE GROUP CONSISTING OF DIBUTYL PHTHALATE AND DIOCTYL PHTHALATE, SAID ORGANIC ESTER PLASTICIZER (2) BEING DISPERSED THROUGHOUT THE FILTER CAKE, THE WEIGHT RATIO OF PLASTICIZER (B) PLUS PLASTICIZER (2) TO SAID POLYVINYL RESIN BEING WITHIN THE RANGE OF ABOUT FROM 1.25:1 TO 1.75:1, AND THE WEIGHT RATIO OF FILLER (C) PLUS FILTER-AID (1) TO SAID POLYVINYL RESIN BEING WITHIN THE RANGE OF ABOUT FROM 2.5:1 TO 4:1.
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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |