US3856728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylonitrile-butadiene-styrene polymers having improved resistance to discoloration
Assignee: ARGUS CHEM CORP US
•
Filing: 1971-04-26
•
Granted: 1974-12-24
•
Expires: 1991-04-26
Abstract
Abstract Acrylonitrile-butadiene-styrene polymers having an enhanced resistance to discoloration when heated at 300* to 375* or higher are provided, comprising an organic phosphite, a polyhydric polycyclic phenol, and an epoxy compound.
Inventors
- 👤 C Abramoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:53
CPC Classifications
C; C08; C08K; C08K5/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
45 words
AN ACRYLONITRILE-BUTADIENE-STYRENE POLYMER HAVING ITS RESISTANCE TO DETERIORATION WHEN HEATED AT 350*F AND ABOVE ENHANCED BY AN AMOUNT WITHIN THE RANGE FROM ABOUT 0.1 TO ABOUT 10 PERCENT BY WEIGHT OF THE POLYMER OF A STABILIZER COMBINATION COMPRISING A POLYHYDRIC POLYCYLCI PHENOL HAVING THE FORMULA:
Claim 2
Dependent Claim
45 words
AN ACRYLONITRILE-BUTADIENE-STYRENE POLYMER HAVING ITS RESISTANCE TO DETERIORATION WHEN HEATED AT 350*F AND ABOVE ENHANCED BY AN AMOUNT WITHIN THE RANGE FROM ABOUT 0.1 TO ABOUT 10 PERCENT BY WEIGHT OF THE POLYMER OF A STABILIZER COMBINATION COMPRISING A POLYHYDRIC POLYCYLCI PHENOL HAVING THE FORMULA:
Claim 3
Dependent Claim
75 words
An acrylonitrile-butadiene-styrene polymer in accordance with claim 1, in which the amount of organic phosphite is within the range from about 0.05 to about 5 percent by weight of the polymer, the amount of epoxy compound is within the range from about 0.05 to about 5 percent by weight of the polymer, and the amount of polycyclic polyhydric phenol is within the range from about 0.01 to about 5 percent by weight of the polymer.
Claim 4
Dependent Claim
22 words
An acrylonitrile-butadiene styrene polymer in accordance with claim 1, in which R4, R5 and R6 of the organic phosphite are alkyl aryl.
Claim 5
Dependent Claim
33 words
An acrylonitrile-butadiene-styrene polymer in accordance with claim 1, in which the epoxy compound is a mono or polyhydric aliphatic alcohol ester of a fatty acid and has from 10 to 150 carbon atoms.
Claim 6
Dependent Claim
20 words
An acrylonitrile-butadiene-styrene polymer in accordance with claim 4, in which the epoxy fatty acid ester is epoxidized soya bean oil.
Claim 7
Dependent Claim
15 words
An acrylonitrile-butadiene-styrene polymer in accordance with claim 1, comprising a mixture of polyhydric polycyclic phenols.
Claim 8
Dependent Claim
18 words
An acrylonitrile-butadiene-styrene polymer in accordance with claim 1, in which Z of the polyhydric polycyclic phenol is sulfur.
Claim 9
Dependent Claim
18 words
An acrylonitrile-butadiene-styrene polymer in accordance with claim 1, in which Z of the polyhydric polycyclic phenol is alkylene.
Claim 10
Dependent Claim
18 words
An acrylonitrile-butadiene-styrene polymer in accordance with claim 1, in which Z of the polyhydric polycyclic phenol is alkenylene.
Claim 11
Dependent Claim
21 words
An acrylonitrile-butadiene-styrene polymer in accordance with claim 1 in which R1, R2 and R3 of the polyhydric polycyclic phenol are alkyl.
References Cited (Backward Citations)
US2733226A
Cited
US3586657A
Cited
US3121068A
Cited
US3080338A
Cited
US3132027A
Cited
US3189569A
Cited
US3189570A
Cited
US3251792A
Cited
US3352820A
Cited
US3211652A
Cited
US3359234A
Cited
US3414636A
Cited
US3449471A
Cited
US3457218A
Cited
US3392141A
Cited
US3472813A
Cited
US3535277A
Cited
US3637555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |