Patent US4052279A successfully refreshed from Google Patents.
US4052279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxy aromatic compound containing sulfur and an organic phosphonate as polymer antioxidant
Assignee: Raychem Corp
•
Filing: 1976-04-08
•
Granted: 1977-10-04
•
Expires: 1996-04-08
Abstract
Abstract An improved antioxidant composition, especially suitable for irradiated or fire-retardant plastics, comprising a mixture of a hydroxy aromatic compound containing sulfur and organic phosphonate compounds.
Inventors
- 👤 Bernard J. Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:07
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5393
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
129 words
A polymer composition having improved resistance to oxidation comprising a polymer susceptible to oxidation and an anti-oxidant effective amount of a composition comprising a non-metallic hydroxy aromatic compound having at least one sulfur atom attached to an aromatic carbocyclic ring and an organic phosphonate compound having the general formula ##STR4## wherein any two or all three of R, R', and R" may be the same or different and may contain further phosphonic moieties and wherein R is independently selected from the group consisting of substituted and unsubstituted alkyl, alkenyl, aryl, aralkyl, alkylaryl and triazine and wherein R' and R" are independently selected from the group consisting of substituted and unsubstituted alkyl, alkenyl, aryl, alkylaryl, aralkyl and triazine wherein R' and R" can be linked together to form a ring.
Claim 2
Dependent Claim
129 words
A polymer composition having improved resistance to oxidation comprising a polymer susceptible to oxidation and an anti-oxidant effective amount of a composition comprising a non-metallic hydroxy aromatic compound having at least one sulfur atom attached to an aromatic carbocyclic ring and an organic phosphonate compound having the general formula ##STR4## wherein any two or all three of R, R', and R" may be the same or different and may contain further phosphonic moieties and wherein R is independently selected from the group consisting of substituted and unsubstituted alkyl, alkenyl, aryl, aralkyl, alkylaryl and triazine and wherein R' and R" are independently selected from the group consisting of substituted and unsubstituted alkyl, alkenyl, aryl, alkylaryl, aralkyl and triazine wherein R' and R" can be linked together to form a ring.
Claim 3
Dependent Claim
37 words
The polymer composition of claim 1 wherein the polymer is selected from the group consisting of polyethylene, polypropylene, ethylenevinylacetate copolymer, ethylene-acrylic ester copolymers, ethylene-propylene copolymer, ethylene-propylene-diene terpolymer, polyvinyl chloride, polyvinylidene chloride and chlorinated polyethylene and mixtures thereof.
Claim 4
Dependent Claim
12 words
The polymer composition of claim 1 wherein the polymer is irradiation cross-linked.
Claim 5
Dependent Claim
45 words
The polymer composition of claim 1 wherein the sulfur atom containing hydroxy aromatic compound is a compound of the general formula R 1 -S-R 2 wherein R 1 and R 2 are independently selected from the group consisting of substituted and unsubstituted phenols and naphthols.
Claim 6
Dependent Claim
13 words
The polymer composition of claim 1 wherein the hydroxy aromatic compound is 4,4'-thiobis(6-t-butyl-m-cresol).
Claim 7
Dependent Claim
19 words
The polymer composition of claim 1 wherein the hydroxy aromatic compound is a mixture of oligomers of 4,4'-thiobis (6-t-butyl-m-cresol).
Claim 8
Dependent Claim
13 words
The polymer composition of claim 1 wherein the hydroxy aromatic compound is 4,4'-thiobis(6-t-butyl-o-cresol).
Claim 9
Dependent Claim
13 words
The polymer composition of claim 1 wherein the hydroxy aromatic compound is 1,1'-thiobis(2-naphthol).
Claim 10
Dependent Claim
14 words
The polymer composition of claim 1 wherein the hydroxy aromatic compound is 2,2'-thiobis(4-methyl-6-t-butyl phenol).
Claim 11
Dependent Claim
20 words
The polymer composition of claim 1 wherein the hydroxy aromatic compound is the reaction product of phosphorus oxychloride and 4,4'-thiobis(6-t-butyl-m-cresol).
Claim 12
Dependent Claim
16 words
The polymer composition of claim 1 wherein the organic phosphonate is an organic ester of 3-t-butyl-4-hydroxy-5-methylbenzylphosphonate.
Claim 13
Dependent Claim
12 words
The polymer composition of claim 1 wherein the organic phosphonate is di-n-octadecyl-3-butyl-4-hydroxy-5-methylbenzylphosphonate.
Claim 14
Dependent Claim
18 words
The polymer composition of claim 1 wherein the organic phosphonate is a phosphonate ester of the formula ##STR5##
Claim 15
Dependent Claim
16 words
The polymer composition of claim 1 wherein the organic phosphonate is a 2,4,6 tris-(dialkyl phosphonato)-1,3,5 triazine.
Claim 16
Dependent Claim
16 words
The polymer composition of claim 1 wherein the organic phosphonate is a 2,4,6 tris-(dialkenyl phosphonato)-1,3,5 triazine.
Claim 17
Dependent Claim
15 words
The polymer composition of claim 1 wherein the organic phosphonate is 2,4,6 tris-(diallyl phosphonato-1,3,5 triazine.
Claim 18
Dependent Claim
12 words
The polymer composition of claim 1 wherein the organic phosphonate is diamylamylphosphonate.
Claim 19
Dependent Claim
12 words
The polymer composition of claim 1 wherein the organic phosphonate is diallylallylphosphonate.
Claim 20
Dependent Claim
22 words
A polymer composition according to claim 1 wherein said non-metallic hydroxy aromatic compound and said organic phosphonate compound are the same compound.
Claim 21
Dependent Claim
12 words
The polymer composition of claim 4 wherein the polymer is irradiation cross-linked.
Claim 22
Dependent Claim
12 words
The polymer composition of claim 5 wherein the polymer is irradiation cross-linked.
Claim 23
Dependent Claim
12 words
The polymer composition of claim 6 wherein the polymer is irradiation cross-linked.
Claim 24
Dependent Claim
12 words
The polymer composition of claim 7 wherein the polymer is irradiation cross-linked.
Claim 25
Dependent Claim
12 words
The polymer composition of claim 8 wherein the polymer is irradiation cross-linked.
Claim 26
Dependent Claim
12 words
The polymer composition of claim 9 wherein the polymer is irradiation cross-linked.
Claim 27
Dependent Claim
12 words
The polymer composition of claim 10 wherein the polymer is irradiation cross-linked.
Claim 28
Dependent Claim
12 words
The polymer composition of claim 11 wherein the polymer is irradiation cross-linked.
Claim 29
Dependent Claim
12 words
The polymer composition of claim 12 wherein the polymer is irradiation cross-linked.
Claim 30
Dependent Claim
12 words
The polymer composition of claim 13 wherein the polymer is irradiation cross-linked.
Claim 31
Dependent Claim
12 words
The polymer composition of claim 14 wherein the polymer is irradiation cross-linked.
Claim 32
Dependent Claim
12 words
The polymer composition of claim 15 wherein the polymer is irradiation cross-linked.
Claim 33
Dependent Claim
12 words
The polymer composition of claim 16 wherein the polymer is irradiation cross-linked.
Claim 34
Dependent Claim
12 words
The polymer composition of claim 17 wherein the polymer is irradiation cross-linked.
Claim 35
Dependent Claim
12 words
The polymer composition of claim 18 wherein the polymer is irradiation cross-linked.
Claim 36
Dependent Claim
12 words
The polymer composition of claim 19 wherein the polymer is irradiation cross-linked.
References Cited (Backward Citations)
FR1558953A
Cited
GB1164889A
Cited
US3493538A
Cited
US3472813A
Cited
US3520952A
Cited
DE2132303A1
Cited
GB1350970A
Cited
US3897388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |