US5034443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer stabilizer and polymer composition stabilized therewith
Assignee: Lanxess Solutions US Inc
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Filing: 1990-05-18
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Granted: 1991-07-23
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Expires: 2010-05-18
Abstract
Abstract Stabilizer compositions including blends of sodium perchlorate hydrate and calcium silicate are disclosed. Free flowing powder compositions of reduced hazard level including calcium silicate, non-absorbing diluent powder such as calcium carbonate, and a solution of sodium perchlorate in water are also disclosed. Vinyl halide compositions especially those used for motor vehicle components having improved long term stability at moderate aging temperatures of about 180° F. to about 275° F., and processes for preparing such compositions, are also disclosed.
Inventors
- 👤 Kook-Jin Bae
- 👤 Curtis R. Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:08
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/16; C01; C01B; C01B11/00; C01B11/16; C01B11/18; C08K3/34
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
43 words
A vinyl halide composition which comprises a polyvinyl chloride resin and a stabilizer including sodium perchlorate and calcium silicate said stabilizer being present in an amount of from about 0.1 to about 10 weight percent to the weight of said polyvinyl chloride resin.
Claim 2
Dependent Claim
43 words
A vinyl halide composition which comprises a polyvinyl chloride resin and a stabilizer including sodium perchlorate and calcium silicate said stabilizer being present in an amount of from about 0.1 to about 10 weight percent to the weight of said polyvinyl chloride resin.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein the ratio of sodium perchlorate to calcium silicate is approximately 1:5 to approximately 4:10 by weight.
Claim 4
Dependent Claim
89 words
A vinyl halide composition which comprises a polyvinyl chloride resin, and an effective amount of a primary heat stabilizer composition to provide processing stability at processing temperatures of about 300° F. to about 400° F., and an amount of from about 0.1 to about 10 weight percent to the weight of said polyvinyl chloride resin of a secondary heat stabilizer composition to provide long term stability at moderate aging temperatures of about 180° F. to about 275° F., said secondary stabilizer composition comprising sodium perchlorate hydrate and calcium silicate.
Claim 5
Dependent Claim
89 words
A vinyl halide composition which comprises a polyvinyl chloride resin, and an effective amount of a primary heat stabilizer composition to provide processing stability at processing temperatures of about 300° F. to about 400° F., and an amount of from about 0.1 to about 10 weight percent to the weight of said polyvinyl chloride resin of a secondary heat stabilizer composition to provide long term stability at moderate aging temperatures of about 180° F. to about 275° F., said secondary stabilizer composition comprising sodium perchlorate hydrate and calcium silicate.
Claim 6
Dependent Claim
25 words
The vinyl halide composition of claim 3 wherein said primary heat stabilizer is selected from the group consisting of organotin stabilizers and metal salt stabilizers.
Claim 7
Dependent Claim
21 words
The vinyl halide composition of claim 4 wherein said organotin stabilizers comprise organotin mercaptides, organotin sulfides, organotin carboxylates and mixtures thereof.
Claim 8
Dependent Claim
22 words
The vinyl halide composition of claim 4 wherein said metal salt stabilizers comprise barium salts, cadmium salts, zinc salts and mixtures thereof.
Claim 9
Dependent Claim
16 words
The composition of claim 3 wherein said secondary stabilizer composition further comprises a non-absorbing diluent powder.
Claim 10
Dependent Claim
28 words
The composition of claim 7 wherein said diluent powder is selected from the group consisting of calcium carbonate, zeolites, silica, alumina, PVC resins, barium sulfate and mixtures thereof.
Claim 11
Dependent Claim
47 words
The composition of claim 8 wherein said secondary stabilizer composition comprises 30 to 50 weight percent of calcium silicate, 30 to 50 weight percent of calcium carbonate, and 10 to 30 weight percent of a water solution containing approximately 60 to 75 weight percent of sodium perchlorate.
Claim 12
Dependent Claim
47 words
The composition of claim 9 wherein the secondary stabilizer composition comprises 35 to 45 weight percent of calcium silicate, 30 to 50 weight percent of calcium carbonate, and 15 to 25 weight percent of a water solution containing approximately 60 to 75 weight percent of sodium perchlorate.
Claim 13
Dependent Claim
44 words
The composition of claim 10 wherein said secondary stabilizer composition comprises about 40 weight percent of calcium silicate, about 45 weight percent of calcium carbonate, and about 25 weight percent of a water solution containing approximately 60 to 75 weight percent of sodium perchlorate.
Claim 14
Dependent Claim
44 words
The composition of claim 10 wherein said secondary stabilizer composition comprises about 40 weight percent of calcium silicate, about 45 weight percent of calcium carbonate, and about 15 weight percent of a water solution containing approximately 60 to 75 weight percent of sodium perchlorate.
Claim 15
Dependent Claim
83 words
A shaped motor vehicle component having an improved stability at moderate temperatures comprised of a polyvinyl chloride resin composition, at least one heat stabilizer in a sufficient amount to impart heat processing stability during shaping, and a secondary stabilizer composition comprises sodium perchlorate hydrate and calcium silicate in an amount of from about 0.1 to about 10 weight percent to the weight of said polyvinyl chloride sufficient amount to provide, after shaping, stability at moderate temperatures not provided by any residual heat stabilizer.
Claim 16
Dependent Claim
83 words
A shaped motor vehicle component having an improved stability at moderate temperatures comprised of a polyvinyl chloride resin composition, at least one heat stabilizer in a sufficient amount to impart heat processing stability during shaping, and a secondary stabilizer composition comprises sodium perchlorate hydrate and calcium silicate in an amount of from about 0.1 to about 10 weight percent to the weight of said polyvinyl chloride sufficient amount to provide, after shaping, stability at moderate temperatures not provided by any residual heat stabilizer.
Claim 17
Dependent Claim
19 words
The shaped motor vehicle component of claim 13 wherein said secondary stabilizer composition further comprises a non-absorbing diluent powder.
Claim 18
Dependent Claim
31 words
The shaped motor vehicle component of claim 14 wherein said diluent powder is selected from the group consisting of calcium carbonate, zeolites, silica, alumina, PVC resins, barium sulfate and mixtures thereof.
Claim 19
Dependent Claim
50 words
The shaped motor vehicle component of claim 16 wherein said secondary stabilizer composition comprises 30 to 50 weight percent of calcium silicate, 30 to 50 weight percent of calcium carbonate, and 10 to 30 weight percent of a water solution containing approximately 60 to 75 weight percent of sodium perchlorate.
Claim 20
Dependent Claim
50 words
The shaped motor vehicle component of claim 16 wherein said secondary stabilizer composition comprises 35 to 45 weight percent of calcium silicate, 30 to 50 weight percent of calcium carbonate, and 15 to 25 weight percent of a water solution containing approximately 60 to 75 weight percent of sodium perchlorate.
Claim 21
Dependent Claim
47 words
The shaped motor vehicle component of claim 17 wherein said secondary stabilizer composition comprises about 40 weight percent of calcium silicate, about 45 weight percent of calcium carbonate and about 25 weight percent of a water solution containing approximately 60 to 75 weight percent of sodium perchlorate.
Claim 22
Dependent Claim
47 words
The shaped motor vehicle component of claim 17 wherein said secondary stabilizer composition comprises about 40 weight percent of calcium silicate, about 45 weight percent of calcium carbonate, and about 15 weight percent of a water solution containing approximately 60 to 75 weight percent of sodium perchlorate.
Claim 23
Dependent Claim
94 words
A process for preparing a motor vehicle component having an improved stability at moderate temperatures which comprises forming a vinyl chloride resin composition at a heat processing temperature within the range from about 300° to 400° F. in the selected shape, incorporating within the composition at least one heat stabilizer in sufficient amount to impart processing stability during shaping and incorporating within such composition a sufficient amount of a secondary stabilizer composition comprising sodium perchlorate hydrate and calcium silicate to provide, after shaping, stability at moderate temperatures not provided by any residual heat stabilizer.
Claim 24
Dependent Claim
94 words
A process for preparing a motor vehicle component having an improved stability at moderate temperatures which comprises forming a vinyl chloride resin composition at a heat processing temperature within the range from about 300° to 400° F. in the selected shape, incorporating within the composition at least one heat stabilizer in sufficient amount to impart processing stability during shaping and incorporating within such composition a sufficient amount of a secondary stabilizer composition comprising sodium perchlorate hydrate and calcium silicate to provide, after shaping, stability at moderate temperatures not provided by any residual heat stabilizer.
Claim 25
Dependent Claim
53 words
A free flowing powder perchlorate stabilizer composition of reduced hazard level comprising 10 to 30 weight percent of a water solution containing approximately 60 to 75 weight percent of sodium perchlorate sodium perchlorate, 30 to 50 weight percent of calcium silicate, and 30 to 50 weight percent of a non-absorbing inert diluent powder.
Claim 26
Dependent Claim
53 words
A free flowing powder perchlorate stabilizer composition of reduced hazard level comprising 10 to 30 weight percent of a water solution containing approximately 60 to 75 weight percent of sodium perchlorate sodium perchlorate, 30 to 50 weight percent of calcium silicate, and 30 to 50 weight percent of a non-absorbing inert diluent powder.
Claim 27
Dependent Claim
12 words
The stabilizer composition of claim 21 wherein said diluent is calcium carbonate.
Claim 28
Dependent Claim
46 words
The composition of claim 22 wherein the stabilizer composition comprises 35 to 45 weight percent of calcium silicate, 30 to 50 weight percent of calcium carbonate, and 15 to 25 weight percent of a water solution containing approximately 60 to 75 weight percent of sodium perchlorate.
Claim 29
Dependent Claim
43 words
The composition of claim 23 wherein said stabilizer composition comprises about 40 weight percent of calcium silicate, about 45 weight percent of calcium carbonate, and about 25 weight percent of a water solution containing approximately 60 to 75 weight percent of sodium perchlorate.
Claim 30
Dependent Claim
43 words
The composition of claim 23 wherein said stabilizer composition comprises about 40 weight percent of calcium silicate, about 45 weight percent of calcium carbonate, and about 15 weight percent of a water solution containing approximately 60 to 75 weight percent of sodium perchlorate.
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) | 1994-07-22 | 1995-01-21 | 1995-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-22 | 1999-01-21 | 1999-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-22 | 2003-01-21 | 2003-07-23 | $7700.00 | Window Closed / Lapsed |