US2931782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for surface coating polymer particles in a vinyl chloride polymer latex with an aldehyde resin and product obtained thereby
Assignee: Imperial Chemical Industries Ltd
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Filing: 1957-12-09
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Granted: 1960-04-05
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Expires: 1977-12-09
Abstract
No abstract record available.
Inventors
- 👤 Jarrett Kenneth Barry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:53
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08J; C08J3/00; C08J3/005; C08J3/12; C08J3/126; C08L57/00; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06; C08J2461/00; C08L61/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A PROCESS WHICH COMPRISES ADDING TO AN AQUEOUS POLYMER LATEX MADE BY THE EMULSION POLYMERISATION OF VINYL CHLORIDE WITH FROM 0 TO 30% OF ITS WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF VINYL ACETATE AND VINYLIDENE CHLORIDE, FORMALDEHYDE AND AT LEAST ONE WATER-SOLUBLE COMPOUND WHICH IS CAPABLE OF REACTING AND FORMING THERMOSET RESINS THEREWITH, SAID COMPOUND BEILNG SELECTED FROM THE GROUP CONSISTING OF PHENOLS, UREA, THIOUREA AND AMINOTRIAZINES, AND REACTING THE FORMALDEHYDE AND THE FORMALDEHYDE-REACTABLE COMPOUND TO FORM A COATING OF AN INSOLUBLE RESIN ON THE SURFACES OF THE POLYMER PARTICLES, THE AMOUNTS OF FORMALDEHYDE AND FORMALDEHYDE-REACTABLE COMPOUND USED BEING SUCH THAT THE WEIGHT OF COATING FORMED IS FROM 1 TO 25 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF THE COATED PARTICLES.
Claim 2
Dependent Claim
127 words
A PROCESS WHICH COMPRISES ADDING TO AN AQUEOUS POLYMER LATEX MADE BY THE EMULSION POLYMERISATION OF VINYL CHLORIDE WITH FROM 0 TO 30% OF ITS WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF VINYL ACETATE AND VINYLIDENE CHLORIDE, FORMALDEHYDE AND AT LEAST ONE WATER-SOLUBLE COMPOUND WHICH IS CAPABLE OF REACTING AND FORMING THERMOSET RESINS THEREWITH, SAID COMPOUND BEILNG SELECTED FROM THE GROUP CONSISTING OF PHENOLS, UREA, THIOUREA AND AMINOTRIAZINES, AND REACTING THE FORMALDEHYDE AND THE FORMALDEHYDE-REACTABLE COMPOUND TO FORM A COATING OF AN INSOLUBLE RESIN ON THE SURFACES OF THE POLYMER PARTICLES, THE AMOUNTS OF FORMALDEHYDE AND FORMALDEHYDE-REACTABLE COMPOUND USED BEING SUCH THAT THE WEIGHT OF COATING FORMED IS FROM 1 TO 25 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF THE COATED PARTICLES.
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) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |