US3644576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact-resistant resinous blends containing vinyl chloride polymer and method of making same
Assignee: Goodrich Corp
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Filing: 1967-10-05
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Granted: 1972-02-22
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Expires: 1987-10-05
Abstract
Abstract RESINOUS BLENDS ARE DISCLOSED COMPRISING A VINYL CHLORIDE BASE RESIN AND A RUBBERY, ESSENTIALLY COMPLETELY GELLED AND FINELY PARTICULATE POLYMER OF AN ALKYL ACRYLATE; SUCH BLENDS BEING MORE OR LESS RIGID AND HAVING HIGH IMPACT STRENGTH, GOOD RESISTANCE TO HEAT DISTORTION AND BROAD PROCESSING LATITUDE. A METHOD OF MAKING SUCH BLENDS IS SHOWN COMPRISING ADDING SUCH ACRYLATE TO THE BASE RESIN AS PARTICLES OF LATEX-LIKE PROPORTIONS PREFERABLY IMBEDDED IN OR DISPERSED IN A HARD MATRIX OF A HARD VINYL CHLORIDE RESIN, AND FUSING THE RESULTING MIXTURE UNDER SHEAR AT 320* TO 440*F. THE RESULTANT IMPACT-RESISTANT BLENDS ARE USEFUL IN TUBING, PIPE, SHEETS AND OTHER STRUCTURAL FORMS.
Inventors
- 👤 Eugene J Sehm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:14
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/04; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L33/00; C08L33/04; C08L33/06; C08L33/08
Claims Analysis
Total Claims: 0
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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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |