Patent US4659764A successfully refreshed from Google Patents.
US4659764A
Expired / Lapsed
US
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Polyvinyl chloride resin compositions for molding
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1986-03-12
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Granted: 1987-04-21
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Expires: 2006-03-12
Abstract
Abstract A polyvinyl chloride powder molding composition is made which is resistant to staining upon thermal exposure when used as a covering for polyurethane articles. Staining of the mold lining is also inhibited. The polymer composition affording these advantages comprises a dry blended mixture of a vinyl chloride resin, a plasticizer, a pigment, a filler and as a thermal stabilizer, a barium-zinc C6 to C9 carboxylic acid soap mixture and at least one inorganic magnesium compound.
Inventors
- 👤 Matsuura Isao
- 👤 Masanori Kobayashi
- 👤 Akira Wakatsuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:38
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
130 words
In a powder resin composition for powder molding which comprises a dry-blended mixture of a polyvinyl chloride resin, a plasticizer, a stabilizer, a pigment and a filler, the improvement wherein the composition comprises a stabilizer mixture represented by the formula: (RCOO).sub.2 Me wherein R represents a C 5 -C 8 alkyl group and Me represents a mixture of barium and zinc in a metal weight ratio of 1:2 to 5:1 and at least one inorganic magnesium compound selected from the group consisting of magnesium oxide, magnesium hydroxide, magnesium phosphate, magnesium perchlorate, basic magnesium carbonate and inorganic magnesium/aluminum compounds, the amounts of said stabilizer mixture and said magnesium compound being 0.1-10 parts by weight and 0.1-5 parts by weight, respectively, based on 100 parts by weight of the polyvinyl chloride resin.
Claim 2
Dependent Claim
130 words
In a powder resin composition for powder molding which comprises a dry-blended mixture of a polyvinyl chloride resin, a plasticizer, a stabilizer, a pigment and a filler, the improvement wherein the composition comprises a stabilizer mixture represented by the formula: (RCOO).sub.2 Me wherein R represents a C 5 -C 8 alkyl group and Me represents a mixture of barium and zinc in a metal weight ratio of 1:2 to 5:1 and at least one inorganic magnesium compound selected from the group consisting of magnesium oxide, magnesium hydroxide, magnesium phosphate, magnesium perchlorate, basic magnesium carbonate and inorganic magnesium/aluminum compounds, the amounts of said stabilizer mixture and said magnesium compound being 0.1-10 parts by weight and 0.1-5 parts by weight, respectively, based on 100 parts by weight of the polyvinyl chloride resin.
Claim 3
Dependent Claim
146 words
A molded resin material for covering a polyurethane article, said material being formed by rotational molding or slush molding of a dry blended mixture of a powder resin composition comprising a polyvinyl choloride resin, a plasticizer, a stabilizer, a pigment and a filler, the improvement wherein the composition comprises a stabilizer mixture represented by the formula: (RCOO).sub.2 Me wherein R represents a C 5 -C 8 alkyl group and Me represents a mixture of barium and zinc in a metal weight ratio of 1:2 to 5:1 and at least one inorganic magnesium compound selected from the group consisting of magnesium oxide, magnesium hydroxide, magnesium phosphate, magnesium perchlorate, basic magnesium carbonate and inorganic magnesium/aluminum compounds, the amounts of said stabilizer mixture and said magnesium compound being 0.1-10 parts by weight and 0.1-5 parts by weight, respectively, based on 100 parts by weight of the polyvinyl chloride resin.
Claim 4
Dependent Claim
146 words
A molded resin material for covering a polyurethane article, said material being formed by rotational molding or slush molding of a dry blended mixture of a powder resin composition comprising a polyvinyl choloride resin, a plasticizer, a stabilizer, a pigment and a filler, the improvement wherein the composition comprises a stabilizer mixture represented by the formula: (RCOO).sub.2 Me wherein R represents a C 5 -C 8 alkyl group and Me represents a mixture of barium and zinc in a metal weight ratio of 1:2 to 5:1 and at least one inorganic magnesium compound selected from the group consisting of magnesium oxide, magnesium hydroxide, magnesium phosphate, magnesium perchlorate, basic magnesium carbonate and inorganic magnesium/aluminum compounds, the amounts of said stabilizer mixture and said magnesium compound being 0.1-10 parts by weight and 0.1-5 parts by weight, respectively, based on 100 parts by weight of the polyvinyl chloride resin.
Claim 5
Dependent Claim
15 words
A producing resin composition according to claim 2 in which the magnesium/aluminum compound is hydrotalcite.
References Cited (Backward Citations)
US3262896A
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US3510441A
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US3640747A
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JPS5250212A
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US4379882A
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JPS5871152A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-20 | 1990-10-20 | 1991-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-20 | 1994-10-20 | 1995-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-20 | 1998-10-20 | 1999-04-21 | $7700.00 | Window Closed / Lapsed |