US3949024A
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Phosphite esters of hindered bis and tris phenols
Assignee: Olin Corp
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Filing: 1971-12-01
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Granted: 1976-04-06
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Expires: 1991-12-01
Abstract
Abstract A phosphite ester of a hindered bis phenol of the formula: ##SPC1## Wherein X is an alkylene radical or sulfur, R is hydrogen or alkyl, and R 1 is alkyl, cycloalkyl or an alkyl-substituted aryl radical, which compounds are useful as stabilizers for polymeric materials.
Inventors
- 👤 Walter Beck
- 👤 David Y. Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:44
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/141; C07F9/145; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/524; C08K5/526; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S524/929
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
54 words
A phosphite ester of a hindered bis phenol represented by the formula: ##SPC8## wherein X is sulfur, R 1 is a C 4 -C 12 alkyl radical wherein the carbon adjacent to the ring is branched, and R is selected from the group consisting of hydrogen and a C 1 -C 12 alkyl radical.
Claim 2
Dependent Claim
54 words
A phosphite ester of a hindered bis phenol represented by the formula: ##SPC8## wherein X is sulfur, R 1 is a C 4 -C 12 alkyl radical wherein the carbon adjacent to the ring is branched, and R is selected from the group consisting of hydrogen and a C 1 -C 12 alkyl radical.
Claim 3
Dependent Claim
14 words
The phosphite ester of clam 1 wherein R 1 is a tertiary butyl radical.
Claim 4
Dependent Claim
14 words
The phosphite ester of clam 1 wherein R 1 is a tertiary butyl radical.
Claim 5
Dependent Claim
14 words
The phosphite ester of claim 1 wherein R is a nonyl or methyl radical.
Claim 6
Dependent Claim
27 words
The phosphite ester of claim 1 wherein R is selected from the group consisting of methyl and nonyl radicals and R 1 is a tertiary butyl radical.
Claim 7
Dependent Claim
19 words
The phosphite ester of claim 1 which is tris (thio bis 2-(4 methyl 6-t-butyl phenol)-2'-(4 methyl 6-butyl phenyl)) phosphite.
Claim 8
Dependent Claim
14 words
The phosphite ester of claim 1 which is tris (thio bis-2-(4-nonyl-6-t-butyl phenol)-2'-(-4-nonyl-6-t-butyl phenyl)) phosphite.
Claim 9
Dependent Claim
13 words
The phosphite ester of claim 1 which is tris (thio-bis-2-(6-t-butyl p-cresol)-2'-(6-t-butyl p-cresyl)) phosphite.
Claim 10
Dependent Claim
67 words
A phosphite ester represented by the formula: ##SPC9## wherein X is sulfur, R 1 is a C 1 -C 12 alkyl radical, a cycloalkyl radical or an alkyl-substituted phenol radical represented by the formula: ##SPC10## where R' is an radical, radica, and n is 1, 2, 3 or 4, and R is selected from the group consisting of hydrogen and a C 1 -C 12 alkyl radical.
Claim 11
Dependent Claim
67 words
A phosphite ester represented by the formula: ##SPC9## wherein X is sulfur, R 1 is a C 1 -C 12 alkyl radical, a cycloalkyl radical or an alkyl-substituted phenol radical represented by the formula: ##SPC10## where R' is an radical, radica, and n is 1, 2, 3 or 4, and R is selected from the group consisting of hydrogen and a C 1 -C 12 alkyl radical.
Claim 12
Dependent Claim
17 words
The phosphite ester of claim 8 wherein the alkyl-substituted phenolic radical is represented by the formula: ##SPC11##
Claim 13
Dependent Claim
25 words
The phosphite ester of claim 8 wherein R 1 is a C 4 -C 12 alkyl radical wherein the carbon adjacent the ring is branched.
Claim 14
Dependent Claim
16 words
The phosphite ester of claim 8 wherein R is a C 8 -C 9 alkyl radical.
Claim 15
Dependent Claim
15 words
The phosphite ester of claim 8 wherein R 1 and R are tertiary butyl radicals.
Claim 16
Dependent Claim
24 words
The phosphite ester of claim 8 wherein, R 1 is a tertiary butyl radical and R is a C 1 -C 12 alkyl radical.
Claim 17
Dependent Claim
22 words
The phosphite ester of claim 9 wherein only one phenolic radical is linked to the phenol ring having the unreacted hydroxyl group.
Claim 18
Dependent Claim
86 words
A phosphite ester of a hindered tris phenol, the hindered tris phenol represented by the structural formula: ##SPC12## wherein R 1 is a tertiary butyl radical and R is hydrogen or a C 1 -C 12 alkyl radical, and wherein the phosphorus atom is bonded directly to an oxygen atom of a phenolic hydroxyl group after removal of the hydrogen, all of the bonds of the phosphorus atom being bonded to an oxygen atom of two or three a hindered tris phenols of the above formulation.
Claim 19
Dependent Claim
86 words
A phosphite ester of a hindered tris phenol, the hindered tris phenol represented by the structural formula: ##SPC12## wherein R 1 is a tertiary butyl radical and R is hydrogen or a C 1 -C 12 alkyl radical, and wherein the phosphorus atom is bonded directly to an oxygen atom of a phenolic hydroxyl group after removal of the hydrogen, all of the bonds of the phosphorus atom being bonded to an oxygen atom of two or three a hindered tris phenols of the above formulation.
Claim 20
Dependent Claim
14 words
The phosphite ester of claim 15 wherein R is a methyl or nonyl radical.
Claim 21
Dependent Claim
22 words
The phosphite ester of claim 15 wherein the phosphorus atom is bonded to the hydroxyl oxygen atom of three hindered tris phenols.
References Cited (Backward Citations)
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 |