US2532223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl resin dispersion
Assignee: Shawinigan Resins Corp
•
Filing: 1948-12-04
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Granted: 1950-11-28
•
Expires: 1968-12-04
Abstract
No abstract record available.
Inventors
- 👤 Jr William H Bromley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:36
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J2329/00; C08J2329/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A PROCESS FOR PREPARING A STABLE AQUEOUS DISPERSION OF POLYVINYL BUTYRAL RRESIN WHICH COMPRISES AGITATING A MIXTURE OF 0.5 TO 30 PARTS OF AN ORGANIC ACID CAPABLE OF FORMIN G A SOAP, 5 TO 80 PARTS OF A PLASTICIZER FOR POLYVINYL BUTYRAL, 100 PARTS OF A POLYVINYL BUTYRAL CONTAINING NOT OVER 30% HYDROXYL GROUPS CALCULATED AS POLYVINYL ALCOHOL, NOT OVER 30% ESTER GROUPS CALCULATED AS POLYVINYL ESTER AND THE BALANCE SUBSTANAILLY BUTYRAL ACETAL, AND AN AMOUNT OF AN AQUEOUS SOLUTION OF A STRONG BASE TO SUBSTANTIALLY NEUTRALIZE THE ORGANIC ACID, THE AMOUNT OF WATER BEING SUCH AS TO CAUSE A RESIN-IN-WATER DISPERSION TO BE FORMED, AGITATING THE SIPERSION WHILE EVAPORATING SUFFICIENT WATER TO CAUSE THE DISPERSION TO INVERT TO A WATER-IN-RESIN DISPERSION, CONTINUING THE AGITATION UNTIL THE RESIN IS PLASTICIZED AND THEN ADDING A SUFFICIENT AMOUNT OF WATER WITH AGITATION TO CAUSE THE DISPERSION TO REVERT TO A RESIN-IN-WATER DISPERSION.
Claim 2
Dependent Claim
150 words
A PROCESS FOR PREPARING A STABLE AQUEOUS DISPERSION OF POLYVINYL BUTYRAL RRESIN WHICH COMPRISES AGITATING A MIXTURE OF 0.5 TO 30 PARTS OF AN ORGANIC ACID CAPABLE OF FORMIN G A SOAP, 5 TO 80 PARTS OF A PLASTICIZER FOR POLYVINYL BUTYRAL, 100 PARTS OF A POLYVINYL BUTYRAL CONTAINING NOT OVER 30% HYDROXYL GROUPS CALCULATED AS POLYVINYL ALCOHOL, NOT OVER 30% ESTER GROUPS CALCULATED AS POLYVINYL ESTER AND THE BALANCE SUBSTANAILLY BUTYRAL ACETAL, AND AN AMOUNT OF AN AQUEOUS SOLUTION OF A STRONG BASE TO SUBSTANTIALLY NEUTRALIZE THE ORGANIC ACID, THE AMOUNT OF WATER BEING SUCH AS TO CAUSE A RESIN-IN-WATER DISPERSION TO BE FORMED, AGITATING THE SIPERSION WHILE EVAPORATING SUFFICIENT WATER TO CAUSE THE DISPERSION TO INVERT TO A WATER-IN-RESIN DISPERSION, CONTINUING THE AGITATION UNTIL THE RESIN IS PLASTICIZED AND THEN ADDING A SUFFICIENT AMOUNT OF WATER WITH AGITATION TO CAUSE THE DISPERSION TO REVERT TO A RESIN-IN-WATER DISPERSION.
References Cited (Backward Citations)
US2396609A
Cited
US2431800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |