Patent US2623863A successfully refreshed from Google Patents.
US2623863A
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Process for making thermoplastic compositions from resinous polymers of monovinyl aromtic hydrocarbons and rubber
Assignee: Dow Chemical Co
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Filing: 1951-03-29
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Granted: 1952-12-30
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Expires: 1971-03-29
Abstract
No abstract record available.
Inventors
- 👤 Dieckmann James Robert
- 👤 Lawrence W Muscott
- 👤 Arthur F Roche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:59
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L25/08; C08L25/10; C08L31/00; C08L31/02; C08L31/04; C08L35/00; C08L35/04; C08L39/00; C08L39/04; C08L39/08; D; D01; D01F; D01F6/00; D01F6/44; D01F6/54; C08J2333/00; C08J2333/18; C08J2333/20; C08L9/00; Y; Y10; Y10S; Y10S525/00; Y10S525/942; Y10S8/00; Y10S8/09; Y10S8/10; Y10S8/92; Y10S8/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
204 words
THE METHOD OF MAKING A THERMOPLASTIC COMPOSITION CONTAINING A POLYMERIZED MONOVINYL AROMATIC HYDROCARBON AND RUBBER, WHICH COMPRISES BLENDING FROM 75 TO 95 PARTS BY WEIGHT OF A RESINOUS POLYMER OF A MIXTURE OF ALKENYL AROMATIC HYDROCARBONS CONTAINING AT LEAST 75 PER CENT BY WEIGHT OF A MONOVINYL AROMATIC HYDROCARBON HAVING THE VINYL GROUP AS THE SOLE NONAROMATIC UNSATURATION; IN CHEMICALLY COMBINED FORM, FROM 2 TO 20 PARTS OF A RUBBERY ELASTOMER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, RUBBERY COPOLYMERS OF FROM 40 TO 80 PER CENT BY WEIGHT OF BUTADIENE AND FROM 60 TO 20 PER CENT OF STYRENE AND COPOLYMERS OF FROM 18 TO 35 PER CENT BY WEIGHT OF ACRYLONITRILE AND FROM 82 TO 65 PER CENT OF BUTADIENE, AND FROM 1 TO 5 PARTS OF A LIQUID PLASTICIZER HAVING A BOILING POINT ABOVE 200* C. INTO A UNIFORM MASS BY MECHANICALLY WORKING A MIXTURE OF THE INGREDIENTS AT A HEAT-PLASTIFYING TEMPERATURE BETWEEN 140* C. AND 230* C., THEREAFTER INCORPORATING FROM 0.001 TO 0.25 PER CENT BY WEIGHT OF AN ORGANIC PEROXIDE HAVING A THERMAL DECOMPOSITION TEMPERATURE ABOVE 95* C., WITH THE HEAT-PLASTIFIED MASS AND KNEADING THE HEATED MIXTURE FOR A PERIOD OF TIME OF FROM 3 TO 15 MINUTES.
Claim 2
Independent Claim
204 words
THE METHOD OF MAKING A THERMOPLASTIC COMPOSITION CONTAINING A POLYMERIZED MONOVINYL AROMATIC HYDROCARBON AND RUBBER, WHICH COMPRISES BLENDING FROM 75 TO 95 PARTS BY WEIGHT OF A RESINOUS POLYMER OF A MIXTURE OF ALKENYL AROMATIC HYDROCARBONS CONTAINING AT LEAST 75 PER CENT BY WEIGHT OF A MONOVINYL AROMATIC HYDROCARBON HAVING THE VINYL GROUP AS THE SOLE NONAROMATIC UNSATURATION; IN CHEMICALLY COMBINED FORM, FROM 2 TO 20 PARTS OF A RUBBERY ELASTOMER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, RUBBERY COPOLYMERS OF FROM 40 TO 80 PER CENT BY WEIGHT OF BUTADIENE AND FROM 60 TO 20 PER CENT OF STYRENE AND COPOLYMERS OF FROM 18 TO 35 PER CENT BY WEIGHT OF ACRYLONITRILE AND FROM 82 TO 65 PER CENT OF BUTADIENE, AND FROM 1 TO 5 PARTS OF A LIQUID PLASTICIZER HAVING A BOILING POINT ABOVE 200* C. INTO A UNIFORM MASS BY MECHANICALLY WORKING A MIXTURE OF THE INGREDIENTS AT A HEAT-PLASTIFYING TEMPERATURE BETWEEN 140* C. AND 230* C., THEREAFTER INCORPORATING FROM 0.001 TO 0.25 PER CENT BY WEIGHT OF AN ORGANIC PEROXIDE HAVING A THERMAL DECOMPOSITION TEMPERATURE ABOVE 95* C., WITH THE HEAT-PLASTIFIED MASS AND KNEADING THE HEATED MIXTURE FOR A PERIOD OF TIME OF FROM 3 TO 15 MINUTES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |