US3093615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for improving the dye-receptivity of articles formed of linear isotactic polypropylene
Assignee: Montedison SpA
•
Filing: 1959-01-02
•
Granted: 1963-06-11
•
Expires: 1979-01-02
Abstract
No abstract record available.
Inventors
- 👤 Bonvicini Alberto
- 👤 Postal Renzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:27
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/79; C; C23; C23G; C23G3/00; D06M; D06M14/00; D06M14/08; D06M14/10; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR INCREASING THE DYE-RECEPTIVITY OF ARTICLES FORMED OF LINEAR, HEAD-TO-TAIL PROPYLENE HOMOPOLYMERIZATE CONSISTING PREVAILINGLY OF ISOTACTIC POLYPROPYLENE, WHICH PROCESS COMPRISES FORMING GRAFT-COPOLYMERS BY POLYMERIZING AN ALKENYL PYRIDINE SELECTED FROM THE GROUP CONSISTING OF 2-ISOPROPENYLPYRIDINE, 3-ISOPROPENYLPYRIDINE, 4-ISOPROPENYLPYRIDINE, AND METHYLISOPROPENYLPYRIDINE, IN THE PRESSENCE OF THE POLYPROPYLENE, SAID POLYMERIZATION BEING EFFECTED BY HEATING SAID ARTICLE WITH SAID ALKENYL PYRIDINE AT A TEMPERATURE FROM ABOUT 80* TO 90* C.
Claim 2
Dependent Claim
67 words
A PROCESS FOR INCREASING THE DYE-RECEPTIVITY OF ARTICLES FORMED OF LINEAR, HEAD-TO-TAIL PROPYLENE HOMOPOLYMERIZATE CONSISTING PREVAILINGLY OF ISOTACTIC POLYPROPYLENE, WHICH PROCESS COMPRISES FORMING GRAFT-COPOLYMERS BY POLYMERIZING AN ALKENYL PYRIDINE SELECTED FROM THE GROUP CONSISTING OF 2-ISOPROPENYLPYRIDINE, 3-ISOPROPENYLPYRIDINE, 4-ISOPROPENYLPYRIDINE, AND METHYLISOPROPENYLPYRIDINE, IN THE PRESSENCE OF THE POLYPROPYLENE, SAID POLYMERIZATION BEING EFFECTED BY HEATING SAID ARTICLE WITH SAID ALKENYL PYRIDINE AT A TEMPERATURE FROM ABOUT 80* TO 90* C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |