Patent US5102933A successfully refreshed from Google Patents.
US5102933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinylchloride composition and stabilizers therefor
Assignee: Galata Chemicals LLC
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Filing: 1990-05-22
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Granted: 1992-04-07
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Expires: 2010-05-22
Abstract
Abstract A composition useful for the thermal stabilization of polyvinylchloride resin comprising an alkyl and aryl-substituted beta-diketone, mannitol and a mixture of magnesium and zinc salts of benzoic and fatty aliphatic acids is disclosed. Also disclosed is polyvinylchloride resin effectively stabilized with the stabilizer composition and a method for effectively stabilizing polyvinylchloride from discoloration at elevated temperatures.
Inventors
- 👤 Kook-Jin Bae
- 👤 Stuart D. Brilliant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:57
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/07; C08K5/05; C08K5/053; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
64 words
A composition of matter useful as a thermal stabilizer for polyvinylchloride resins which comprises an alkyl and aryl-substituted beta-diketone, mannitol in an amount of from about 50 to about 200 weight percent of the beta-diketone and a mixture of magnesium and zinc salts of benzoic and fatty aliphatic acids in an amount of from about 25 to about 400 weight percent of the beta-diketone.
Claim 2
Dependent Claim
64 words
A composition of matter useful as a thermal stabilizer for polyvinylchloride resins which comprises an alkyl and aryl-substituted beta-diketone, mannitol in an amount of from about 50 to about 200 weight percent of the beta-diketone and a mixture of magnesium and zinc salts of benzoic and fatty aliphatic acids in an amount of from about 25 to about 400 weight percent of the beta-diketone.
Claim 3
Dependent Claim
38 words
A composition of claim 1 wherein the beta-diketone has the following structural formula: ##STR2## wherein R is alkyl having at least about 10 carbon atoms and R' is phenyl substituted with up to about 3 lower alkyl groups.
Claim 4
Dependent Claim
12 words
A composition of claim 2 wherein the beta-diketone is stearoyl benzoyl methane.
Claim 5
Dependent Claim
19 words
A composition of matter of claim 1 wherein the fatty aliphatic acids have at least about 10 carbon atoms.
Claim 6
Dependent Claim
16 words
A composition of matter of claim 4 wherein at least one aliphatic acid is stearic acid.
Claim 7
Dependent Claim
36 words
A composition of claim 4 wherein the mixture of magnesium and zinc salts of benzoic and fatty aliphatic acids is prepared by heating benzoic acid, at least one fatty carboxylic acid, zinc oxide and magnesium oxide.
Claim 8
Dependent Claim
15 words
The composition of claim 6 wherein at least one fatty aliphatic acid is stearic acid.
Claim 9
Dependent Claim
29 words
A composition of claim 4 wherein the mixture of magnesium and zinc salts of benzoic and fatty aliphatic acids is prepared by mixing magnesium benzoate and a zinc carboxylate.
Claim 10
Dependent Claim
12 words
The composition of claim 8 wherein the zinc carboxylate is zinc stearate.
Claim 11
Dependent Claim
29 words
A composition of claim 4 wherein the mixture of magnesium and zinc salts of benzoic and fatty aliphatic acids is prepared by mixing zinc benzoate and a magnesium carboxylate.
Claim 12
Dependent Claim
12 words
The composition of claim 10 wherein the magnesium carboxylate is magnesium stearate.
Claim 13
Dependent Claim
15 words
The composition of claim 4 which also contains a stabilizing amount of an organic phosphite.
Claim 14
Dependent Claim
20 words
A polyvinylchloride resin composition which comprises polyvinylchloride resin and a heat stabilizing effective amount of the composition of claim 1.
Claim 15
Dependent Claim
20 words
A polyvinylchloride resin composition which comprises polyvinylchloride resin and a heat stabilizing effective amount of the composition of claim 3.
Claim 16
Dependent Claim
20 words
A polyvinylchloride resin composition which comprises polyvinylchloride resin and a heat stabilizing effective amount of the composition of claim 5.
Claim 17
Dependent Claim
32 words
A method for stabilizing polyvinylchloride resins from deterioration caused by exposure to elevated temperatures which comprises adding a heat stabilizing effective amount of the composition of claim 1 to the polyvinylchloride resin.
Claim 18
Dependent Claim
32 words
A method for stabilizing polyvinylchloride resins from deterioration caused by exposure to elevated temperatures which comprises adding a heat stabilizing effective amount of the composition of claim 3 to the polyvinylchloride resin.
Claim 19
Dependent Claim
32 words
A method for stabilizing polyvinylchloride resins from deterioration caused by exposure to elevated temperatures which comprises adding a heat stabilizing effective amount of the composition of claim 5 to the polyvinylchloride resin.
Claim 20
Dependent Claim
32 words
A method for stabilizing polyvinylchloride resins from deterioration caused by exposure to elevated temperatures which comprises adding a heat stabilizing effective amount of the composition of claim 9 to the polyvinylchloride resin.
Claim 21
Dependent Claim
32 words
A method for stabilizing polyvinylchloride resins from deterioration caused by exposure to elevated temperatures which comprises adding a heat stabilizing effective amount of the composition of claim 11 to the polyvinylchloride resin.
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) | 1995-04-07 | 1995-10-07 | 1996-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-07 | 1999-10-07 | 2000-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-07 | 2003-10-07 | 2004-04-07 | $7700.00 | Window Closed / Lapsed |