US3669926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizing plastic with borated dihydroxydiphenyl sulfide
Assignee: Universal Oil Products Co
•
Filing: 1967-06-21
•
Granted: 1972-06-13
•
Expires: 1987-06-21
Abstract
Abstract Stabilizing plastic by incorporating therein a minor but stabilizing concentration of borated dihydroxydiphenyl sulfide.
Inventors
- 👤 Henryk A Cyba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:57
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/55
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
7 words
The plastic of claim 1 being polystyrene.
Claim 2
Dependent Claim
7 words
The plastic of claim 1 being polyethylene.
Claim 3
Dependent Claim
7 words
The plastic of claim 1 being polypropylene.
Claim 4
Dependent Claim
14 words
The plastic of claim 1 in which said dihydroxydiphenyl sulfide is a 2,2''-dihydroxydiphenyl sulfide.
Claim 5
Dependent Claim
13 words
The plastic of claim 5 in which said dihydroxydiphenyl sulfide is 2,2''-dihydroxy-5,5''-dialkyldiphenyl sulfide.
Claim 6
Dependent Claim
14 words
The plastic of claim 1 in which said dihydroxydiphenyl sulfide is a 4,4''-dihydroxydiphenyl sulfide.
Claim 7
Dependent Claim
14 words
The plastic of claim 7 in which said dihydroxydiphenyl sulfide is 3,3''-dialkyl-4,4''-dihydroxydiphenyl sulfide. Pg,23
Claim 8
Dependent Claim
15 words
The plastic of claim 1 in which said borate is alkyl boronate of 2,2''-dihydroxy-5,5''-dialkyldiphenyl sulfide.
Claim 9
Dependent Claim
14 words
The plastic of claim 9 in which said borate is nonyl-boronate of 2,2''-dihydroxy-5,5''-di-tert-octyl-diphenyl sulfide.
Claim 10
Dependent Claim
28 words
A polymer composition comprising a polymer of an alpha-mono-olefin having 2 to 4 carbon atoms having incorporated therein a stabilizing amount of a borate of a 4,4'' thio-bis-phenol.
References Cited (Backward Citations)
US3131164A
Cited
US3224971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |