US4086304A
Expired / Lapsed
US
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Organic triphosphites having improved hydrolytic stability and a process for stabilizing organic triphosphites
Assignee: Akzona Inc
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Filing: 1976-06-11
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Granted: 1978-04-25
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Expires: 1996-06-11
Abstract
Abstract A hydrolytically stable composition contains as its essential components at least about 85% by weight of an organic triphosphite and from about 0.1% to 5% by weight of a salt of a metal from Group I or Group II of the Periodic System and an organic acid having at least 8 carbon atoms. An organic triphosphite can be stabilized against hydrolytic degradation in accordance with the invention by mixing from about 0.1% to 5% by weight of the said salt therewith.
Inventors
- 👤 Ronald Eric Hutton
- 👤 David Frederic Watson Cross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:24
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/524; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
45 words
A method of improving the hydrolytic stability of an organic triphosphite which comprises mixing the triphosphite with a stabilizing amount of a salt of a metal of Group I or II of the Periodic System and an organic acid having at least 8 carbon atoms.
Claim 2
Independent Claim
45 words
A method of improving the hydrolytic stability of an organic triphosphite which comprises mixing the triphosphite with a stabilizing amount of a salt of a metal of Group I or II of the Periodic System and an organic acid having at least 8 carbon atoms.
Claim 3
Dependent Claim
18 words
The method of claim 1 wherein the said salt of a metal is a calcium or magnesium salt.
Claim 4
Dependent Claim
70 words
A composition containing as its essential components (a) at least about 85% by weight of an organic triphosphite, and (b) from about 0.1 to about 5% by weight of the salt of a metal from Groups I and II of the Periodic System and an organic acid with at least 8 carbon atoms, the weight ratio between components (a) and (b) being between 30 : 1 and 200 : 1.
Claim 5
Dependent Claim
70 words
A composition containing as its essential components (a) at least about 85% by weight of an organic triphosphite, and (b) from about 0.1 to about 5% by weight of the salt of a metal from Groups I and II of the Periodic System and an organic acid with at least 8 carbon atoms, the weight ratio between components (a) and (b) being between 30 : 1 and 200 : 1.
Claim 6
Dependent Claim
79 words
The composition of claim 3 wherein the organic triphosphite is a compound corresponding to one of the following structural formulae: ##STR3## wherein n = 0 or an integer of from 1 to 8, and wherein the R's are the same or different and R is an aryl, alkyl, cycloalkyl, aralkyl or alkaryl group, R 1 and R 2 each represent a divalent arylene, cycloalkylene, aralkylene or alkarylene group, and R 3 is a radical derived from a polyol group.
Claim 7
Dependent Claim
22 words
The composition of claim 3 wherein component (b) is the metal salt of a carboxylic acid with 8 to 12 carbon atoms.
Claim 8
Dependent Claim
13 words
The composition of claim 5 wherein the carboxylic acid is 2-ethyl hexanoic acid.
Claim 9
Dependent Claim
19 words
The composition of claim 5 wherein the carboxylic acid has a branched, aliphatic chain with a quaternary carbon atom.
Claim 10
Dependent Claim
20 words
The composition of claim 7 wherein the carboxyl group of the organic acid is bonded to a quaternary carbon atom.
Claim 11
Dependent Claim
15 words
The composition of claim 3 wherein component (b) is the metal salt of a phenol.
Claim 12
Dependent Claim
18 words
The composition of claim 9 wherein the phenol contains an alkyl group with 1 to 18 carbon atoms.
Claim 13
Dependent Claim
12 words
The composition of claim 10 wherein the alkyl phenol is nonyl phenol.
Claim 14
Dependent Claim
21 words
The composition of claim 3 wherein a metal from Group II of the Periodic System is used for the metal salt.
Claim 15
Dependent Claim
15 words
The composition of claim 12 wherein the metal salt is a calcium or magnesium salt.
Claim 16
Dependent Claim
30 words
The composition of claim 3 wherein component (b) is a magnesium or calcium salt of a mixture of carboxylic acids having a branched aliphatic chain and a quaternary carbon atom.
Claim 17
Dependent Claim
18 words
The composition of claim 3 wherein component (b) is the magnesium or calcium salt of 2-ethyl hexanoic acid.
Claim 18
Dependent Claim
23 words
The composition of claim 3 wherein the weight ratio between components (a) and (b) is between 40 : 1 and 60 : 1.
References Cited (Backward Citations)
US3553298A
Cited
US3755200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |