Patent US2499503A successfully refreshed from Google Patents.
US2499503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkali-metal pentaalkyl tripolyphosphates as stabilizers for vinyl resins
Assignee: Uniroyal Inc
•
Filing: 1946-10-29
•
Granted: 1950-03-07
•
Expires: 1966-10-29
Abstract
No abstract record available.
Inventors
- 👤 Curtis E Huff
- 👤 Gilbert A Zimmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:37
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A RESINOUS POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND COPOLYMERS OF VINYL CHLORIDE AND VINYL ACETATE, STABILIZED AGAINST DISCOLORATION AND FABRIC-ROTTING TENDENCIES UPON EXPOSURE TO LIGHT OR TO ELEVATED TEMPERATURES BY ADMIXTURE WITH FROM 0.5 TO 3% BY WEIGHT, BASED ON THE WEIGHT OF SAID POLYMER, OF A PENTA ALKALI-METAL PENTAALKYL TRIPOLYPHOSPHATE HAVING THE FORMULA M5R5(P3O10)2 WHERE R IS A C8H17 ALKYL RADICAL AND M IS AN ALKALI-METAL, SAID TIPOLYPHOSPHATE BEING SUBSTANTIALLY NEUTRAL IN REACTION WHEN DISSOLVED IN DISTILLED WATER AND BEING COMPATIBLE WITH SAID POLYMER TO SUCH AN EXTENT AS NOT TO PRODUCE HAZINESS OR MILKINESS IN TRANSPARENT FILMS OF SAID POLYMER.
Claim 2
Dependent Claim
106 words
A RESINOUS POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND COPOLYMERS OF VINYL CHLORIDE AND VINYL ACETATE, STABILIZED AGAINST DISCOLORATION AND FABRIC-ROTTING TENDENCIES UPON EXPOSURE TO LIGHT OR TO ELEVATED TEMPERATURES BY ADMIXTURE WITH FROM 0.5 TO 3% BY WEIGHT, BASED ON THE WEIGHT OF SAID POLYMER, OF A PENTA ALKALI-METAL PENTAALKYL TRIPOLYPHOSPHATE HAVING THE FORMULA M5R5(P3O10)2 WHERE R IS A C8H17 ALKYL RADICAL AND M IS AN ALKALI-METAL, SAID TIPOLYPHOSPHATE BEING SUBSTANTIALLY NEUTRAL IN REACTION WHEN DISSOLVED IN DISTILLED WATER AND BEING COMPATIBLE WITH SAID POLYMER TO SUCH AN EXTENT AS NOT TO PRODUCE HAZINESS OR MILKINESS IN TRANSPARENT FILMS OF SAID POLYMER.
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) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |