Patent US2963452A successfully refreshed from Google Patents.
US2963452A
Expired / Lapsed
US
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Stable dispersions of rubbery substances and method of preparing same
Assignee: Bayer AG
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Filing: 1957-12-26
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Granted: 1960-12-06
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Expires: 1977-12-26
Abstract
No abstract record available.
Inventors
- 👤 Sinn Gustav
- 👤 Bartl Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:35
CPC Classifications
C; C08; C08L; C08L21/00; C08L21/02; Y; Y10; Y10S; Y10S525/00; Y10S525/942
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A NEW COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A VULCANIZABLE INTIMATE MIXTURE OF A SOLID RUBBERY ORGANIC POLYMER OF HIGH MOLECULAR WEIGHT AND 3-30% BY WEIGHT, BASED ON THE WEIGHT OF SAID RUBBERY POLYMER, OF A COPOLYMER OF (A) ONE MOLE OF A HALF ESTER OF AN ALPHA,BETA-ETHYLENICALLY UNSATURATED DICARBOXYLIC ACID WITH A MONOHYDRIC SATURATED ALCOHOL OF 8-20 CARBON ATOMS, AND (B) 1-2 MOLES OF AT LEAST ONE MONOMER SELECTED FROM THE GROUP CONSISTING OF A MONOVINYL AROMATIC COMPOUND. A VINYL ESTER OF A LOWER FATTY ACID, A CONJUGATED DIOLEFIN OF 4-6 CARBON ATOMS, AND ESTERS OF ACRYLIC AND METHACRYLIC ACID WITH A SATURATED ALIPHATIC MONOHYDRIC ALCOHOL OF 4-20 CARBON ATOMS.
Claim 2
Dependent Claim
139 words
A PROCESS OF DISPERSING A SOLID RUBBERY ORGANIC POLYMER OF HIGH MOLECULAR WEIGHT IN ORDER TO FORM A STABLE AQUEOUS DISPERSION WHICH CONSISTS ESSENTIALLY OF PREPARING AN INTIMATE MIXTURE OF SAID SOLID RUBBERY POLYMER WITH ABOUT 3-30% BY WEIGHT OF A COPOLYMER OF (A) ONE MOL OF A HALF ESTER OF AN ALPHA,BETA-ETHYLENICALLY UNSATURATED DISCARBOXYLIC ACID WITH A MONOHYDRIC SATURATED ALCOHOL OF 8-20 CARBON ATOMS, AND (B) 1-2 MOLS OF AT LEAST ONE MONOMETER SELECTED FROM THE GROUP CONSISTING OF A MONOVINYL AROMATIC COMPOUND, A VINYL ESTER OF A LOWER FATTY ACID, A CONJUGATED DIOLEFIN OF 4-6 CARBON ATOMS, AND ESTERS OF ACRYLIC AND METHACRYLIC ACID WITH A SATURATED ALIPHATIC MONOHYDRIC ALCOHOL OF 4-20 CARBON ATOMS, AND DISPERSING SAID MIXTURE IN AN AQUEOUS MEDIUM CONTAINING A PROTECTIVE COLLOID SELECTED FROM THE GROUP CONSISTING OF CASEIN, GELATIN, AND POLYVINYL ALCOHOL.
References Cited (Backward Citations)
US2798062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |