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US3699152A
Expired / Lapsed
US
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Sulfur containing esters of substituted hydroxyphenyl-alkanoic acids
Assignee: Carlisle Chemical Works Inc
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Filing: 1969-12-10
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Granted: 1972-10-17
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Expires: 1989-12-10
Abstract
Abstract where R5 and R6 are hydrogen, alkyl, cycloalkyl, aryl or aralkyl, the total carbon atoms in R5 and R6 is between four and 36 carbon atoms, is preferably not over 12 carbon atoms and R6 is preferably in the ortho position, R2 is R3 is hydrocarbyl, preferably alkyl or alkenyl, e.g., of one to 18 carbon atoms, n is 1 or 2, R14 is H or COOR2, m is 1, 2, 3 or 4, y is 0 or 1, and R4 is either R2 or R3 and R15 is hydrogen or lower alkyl. The above compounds are useful as antioxidants. Compounds are prepared having one of the following formulas: A. HOR1CH2S(CH2)nCOOR4 c. HOR1CmH2m 1(S(CH2)nCOOR3)2 d. (HOR1CH2)2C(COOR2)2 e. HOR1CH2O(CH2)nCOOR2 f. HOR1CH2OCH2CH2OOCCH2CH2S(CH2)nCOOR3 g. HOR1CH2CH(COOR2)2
Inventors
- 👤 Ingenuin A Hechenbleikner
- 👤 John F Hussar
- 👤 Arthur F Koeniger
- 👤 Robert E Bresser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:44
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0071; A; A23; A23B; A23B2/00; A23B2/70; A23B2/725; A23B2/729; A23B2/742; A23B2/754; A23B2/758; A23B2/767; C07; C07C; C07C323/00; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/375; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S524/926
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
21 words
A compound according to claim 1 wherein R3 is alkyl of up to 18 carbon atoms cyclohexyl, phenyl, tolyl or benzyl.
Claim 2
Dependent Claim
37 words
A compound according to claim 1 wherein the total carbon atoms in R5 and R6 is not over 12, R2 is CH2(CnH2n)S(CnH2n)COOR3, R3 is alkyl or alkenyl of up to 18 carbon atoms and y is 1.
Claim 3
Dependent Claim
21 words
A compound according to claim 1 wherein the total carbon atoms in R5 and R6 is not over 12, R2 is
Claim 4
Dependent Claim
14 words
A compound according to claim 3 where n is 2 and R3 is alkyl.
Claim 5
Dependent Claim
10 words
A compound according to claim 1 wherein HOR1 is 3,5-di-t-butyl-4-hydroxyphenyl.
Claim 6
Dependent Claim
26 words
A compound according to claim 1 wherein R5 and R6 are both alkyl and the total of R5 and R6 is not over 12 carbon atoms.
Claim 7
Dependent Claim
16 words
A compound according to claim 7 wherein R3 is alkyl of up to 18 carbon atoms.
Claim 8
Dependent Claim
21 words
A compound according to claim 1 having the formula where R3 is alkyl or alkenyl of up to 18 carbon atoms.
Claim 9
Dependent Claim
26 words
A compound according to claim 9 wherein R5 and R6 are both alkyl and the total of R5 and R6 is not over 12 carbon atoms.
Claim 10
Dependent Claim
16 words
A compound according to claim 10 wherein R3 is alkyl of up to 18 carbon atoms.
Claim 11
Dependent Claim
10 words
A compound according to claim 11 where n is 2.
Claim 12
Dependent Claim
10 words
A compound according to claim 9 where n is 2.
Claim 13
Dependent Claim
10 words
A compound according to claim 9 where HOR1 is 3,5-di-t-butyl-4-hydroxyphenyl.
References Cited (Backward Citations)
US3457286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |