US3948946A
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Cyclic acetals and mercaptals
Assignee: Sandoz AG
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Filing: 1974-09-20
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Granted: 1976-04-06
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Expires: 1994-09-20
Abstract
Abstract The invention provides novel cyclic acetals and mercaptals useful as stabilising agents for organic susceptible to degradation by heat or oxygen.This is a continuation, of application Ser. No. 300,199 filed Oct. 24, 1972 now abandoned.
Inventors
- 👤 Kurt Hofer
- 👤 Anton Voykowitsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:39
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/156; C09; C09K; C09K15/00; C09K15/04; C09K15/12; C09K15/14
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
177 words
A compound of formula, ##SPC11## in which R 1 is tertiary alkyl of up to 12 carbon atoms and is in a position adjacent to the hydroxy group, R 2 is methyl, t-butyl or phenyl, n is 1 or 2, K is a 2n-valent hydrocarbon radical of 2 to 12 carbon atoms, selected from the group consisting of divalent saturated aliphatic radicals of 2 to 12 carbon atoms in which one C-C bond may be replaced by a C--O--C bond; 1,2-cyclohexylene; divalent aromatic radicals of 6 to 12 carbon atoms; divalent saturated araliphatic radicals of 7 to 12 carbon atoms; tetravalent saturated aliphatic radicals of 4 to 8 carbon atoms; 3-methoxy-1,2-phenylene and the radical of the formula ##EQU4## and X 1 and X 2 , which may be the same or different, each signifies an oxygen or sulphur atom, X 1 and X 2 being bonded to adjacent or next adjacent atoms in the radical K, provided that when n is 2, the two divalent radicals attached to the radical K may be the same or different.
Claim 2
Dependent Claim
177 words
A compound of formula, ##SPC11## in which R 1 is tertiary alkyl of up to 12 carbon atoms and is in a position adjacent to the hydroxy group, R 2 is methyl, t-butyl or phenyl, n is 1 or 2, K is a 2n-valent hydrocarbon radical of 2 to 12 carbon atoms, selected from the group consisting of divalent saturated aliphatic radicals of 2 to 12 carbon atoms in which one C-C bond may be replaced by a C--O--C bond; 1,2-cyclohexylene; divalent aromatic radicals of 6 to 12 carbon atoms; divalent saturated araliphatic radicals of 7 to 12 carbon atoms; tetravalent saturated aliphatic radicals of 4 to 8 carbon atoms; 3-methoxy-1,2-phenylene and the radical of the formula ##EQU4## and X 1 and X 2 , which may be the same or different, each signifies an oxygen or sulphur atom, X 1 and X 2 being bonded to adjacent or next adjacent atoms in the radical K, provided that when n is 2, the two divalent radicals attached to the radical K may be the same or different.
Claim 3
Dependent Claim
17 words
A compound of claim 1, in which X 1 and X 2 each is an oxygen atom.
Claim 4
Dependent Claim
20 words
A compound of claim 1, in which R 1 is radical tertiary alkyl radical of 4 to 8 carbon atoms.
Claim 5
Dependent Claim
17 words
A compound of claim 1, in which R 1 is tertiary butyl, tertiary amyl or tertiary octyl.
Claim 6
Dependent Claim
12 words
A compound of claim 1, in which R 1 is tertiary butyl.
Claim 7
Dependent Claim
22 words
A compound of claim 1, in which n is 2 and K is a tetravalent radical of 4 to 8 carbon atoms.
Claim 8
Dependent Claim
16 words
A compound of claim 1, in which n is 2 and K is meso-1,2,3,4-butantetrayl or neopentantetrayl.
Claim 9
Dependent Claim
13 words
A compound of claim 1, having a molecular weight of at least 300.
Claim 10
Dependent Claim
13 words
A compound of claim 1, having a molecular weight of at least 500.
Claim 11
Dependent Claim
8 words
The compound of claim 13 of formula ##SPC12##
Claim 12
Dependent Claim
15 words
The compound of claim 1 of formula ##SPC13## in which each R signifies tertiary butyl.
Claim 13
Dependent Claim
10 words
The compound according to claim 1, of the formula ##SPC14##
Claim 14
Dependent Claim
161 words
A compound of the formula ##SPC15## in which R 1 is tertiary alkyl of up to 12 carbon atoms and is in a position adjacent to the hydroxy group, R 2 is hydrogen, alkyl or cycloalkyl of up to 20 carbon atoms, or phenyl which may be mono- or di-substituted by alkyl of 1 to 4 carbon atoms, K is a divalent hydrocarbon radical of 2 to 12 carbon atoms selected from the group consisting of divalent saturated aliphatic radicals of 2 to 12 carbon atoms in which one C-C bond may be replaced by a C--O--C bond; 1,2-cyclohexylene; divalent aromatic radicals of 6 to 12 carbon atoms; divalent saturated araliphatic radicals of 7 to 12 carbon atoms; 3-methoxy-1,2-phenylene and the radical of the formula ##EQU5## X 1 and X 2 , which may be the same or different, each is oxygen or sulphur, X 1 and X 2 being bonded to adjacent or next adjacent atoms in the radical K.
Claim 15
Dependent Claim
161 words
A compound of the formula ##SPC15## in which R 1 is tertiary alkyl of up to 12 carbon atoms and is in a position adjacent to the hydroxy group, R 2 is hydrogen, alkyl or cycloalkyl of up to 20 carbon atoms, or phenyl which may be mono- or di-substituted by alkyl of 1 to 4 carbon atoms, K is a divalent hydrocarbon radical of 2 to 12 carbon atoms selected from the group consisting of divalent saturated aliphatic radicals of 2 to 12 carbon atoms in which one C-C bond may be replaced by a C--O--C bond; 1,2-cyclohexylene; divalent aromatic radicals of 6 to 12 carbon atoms; divalent saturated araliphatic radicals of 7 to 12 carbon atoms; 3-methoxy-1,2-phenylene and the radical of the formula ##EQU5## X 1 and X 2 , which may be the same or different, each is oxygen or sulphur, X 1 and X 2 being bonded to adjacent or next adjacent atoms in the radical K.
Claim 16
Dependent Claim
42 words
A compound according to claim 13, wherein R 2 is alkyl of 1 to 8 carbon atoms, cycloalkyl of 5 to 7 carbon atoms or phenyl which may be substituted by one or two alkyl radicals of 1 to 4 carbon atoms.
Claim 17
Dependent Claim
15 words
A compound according to claim 14, wherein R 2 is methyl, t. butyl or phenyl.
Claim 18
Dependent Claim
19 words
A compound of claim 13, in which K is 2,2-dimethyl-propylene, ethylene, 5-methyl-1, 2-phenylene, or a radical of formula ##EQU6##
Claim 19
Dependent Claim
6 words
The compound of claim 13 ##SPC16##
Claim 20
Dependent Claim
8 words
The compound of claim 13 of formula ##SPC17##
Claim 21
Dependent Claim
8 words
The compound of claim 13 of formula ##SPC18##
Claim 22
Dependent Claim
14 words
The compound of formula ##SPC19## in which each Q signifies the tertiary amyl radical.
Claim 23
Dependent Claim
14 words
The compound of formula ##SPC19## in which each Q signifies the tertiary amyl radical.
Claim 24
Dependent Claim
8 words
The compound of claim 13 of formula ##SPC20##
Claim 25
Dependent Claim
22 words
The compound of claim 13 of formula ##SPC21## in which the benzene A is substituted by one or two tertiary octyl radicals.
Claim 26
Dependent Claim
6 words
The compound of the formula ##SPC22##
Claim 27
Dependent Claim
6 words
The compound of the formula ##SPC22##
References Cited (Backward Citations)
US3347871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |