Patent US3557039A successfully refreshed from Google Patents.
US3557039A
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Aqueous dispersion of block or graft polymer useful in surface modifying treatment of polyester shaped articles
Assignee: Imperial Chemical Industries Ltd
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Filing: 1968-12-02
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Granted: 1971-01-19
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Expires: 1988-12-02
Abstract
Abstract A STABLE DISPERSION IN WATER OF A BLOCK OR GRAFT COPOLYMER, A FIRST POLYMERIC CONSTITUENT OF WHICH IS A CRYSTALLINE POLYESTER AND A SECOND POLYMERIC CONSTITUENT OF WHICH IS SOLVATED BY WATER. THE FIRST POLYMERIC CONSTITUENT CONTAINS REPEAT UNITS OF THE TYPE USED IN FIBER-FORMING POLYESTER MATERIALS AND THE SECOND POLYMERIC CONSTITUENT PREFERABLY IS A POLYOXYETHYLENE CHAIN. THE DISPERSION IS USEFUL FOR APPLYING THE POLYMER TO THE SURFACE OF A POLYESTER ARTICLE TO PRODUCE A DURABLE SURFACE EFFECT.
Inventors
- 👤 James Eric Mcintyre
- 👤 Michael Mundie Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:18
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/68; C08G63/685; C08G63/6854; C08G63/688; C08G63/6884; C08J; C08J3/00; C08J3/02; C08J3/03; C08J3/05; C09; C09D; C09D167/00; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/507; D06M15/5075; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31794
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |