US4045388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin composition of hydrophilic pullulan, hydrophobic thermoplastic resin, and plasticizer
Assignee: Hayashibara Seibutsu Kagaku Kenkyujo KK
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Filing: 1975-02-25
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Granted: 1977-08-30
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Expires: 1995-02-25
Abstract
Abstract A novel resin composition is obtained by blending a hydrophilic pullulan with 2 to 98 wt %, based on the total resin weight, of a hydrophobic thermoplastic resin.
Inventors
- 👤 Hiroomi Matsunaga
- 👤 Kozo Tsuji
- 👤 Teruo Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:03
CPC Classifications
C; C08; C08L; C08L5/00; Y; Y10; Y10S; Y10S260/00; Y10S260/43
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
137 words
A resin composition prepared by blending a hydrophilic pullulan resin having a molecular weight of 10,000 to 5,000,000 selected from the group consisting of pullulan and a pullulan resin which has been partly modified by etherification, esterification or graftcopolymerization with a vinyl compound, a hydrophobic thermoplastic resin selected from the group consisting of polyethylene, polypropylene, polystyrene, acrylonitrile-butadiene-styrene copolymers, polymethylmethacrylate, polyvinyl acetate, polyvinyl chloride, polyvinylidene chloride, vinyl acetate-vinyl chloride copolymer, ethylene-vinyl acetate copolymer, propylene-vinyl acetate copolymer, polycarbonates, polyacetals, polysulfones, polyamides, and polyesters, present in an amount of 2 to 98 wt % based on the total resin and a plasticizer selected from the group consisting of water, glycerin, ethylene glycol, propylene glycol, butylene glycol, dimethyl sulfoxide, and dimethyl formamide present in an amount of 1 to 50 wt % based on the total weight of pullulan and plasticizer.
Claim 2
Dependent Claim
137 words
A resin composition prepared by blending a hydrophilic pullulan resin having a molecular weight of 10,000 to 5,000,000 selected from the group consisting of pullulan and a pullulan resin which has been partly modified by etherification, esterification or graftcopolymerization with a vinyl compound, a hydrophobic thermoplastic resin selected from the group consisting of polyethylene, polypropylene, polystyrene, acrylonitrile-butadiene-styrene copolymers, polymethylmethacrylate, polyvinyl acetate, polyvinyl chloride, polyvinylidene chloride, vinyl acetate-vinyl chloride copolymer, ethylene-vinyl acetate copolymer, propylene-vinyl acetate copolymer, polycarbonates, polyacetals, polysulfones, polyamides, and polyesters, present in an amount of 2 to 98 wt % based on the total resin and a plasticizer selected from the group consisting of water, glycerin, ethylene glycol, propylene glycol, butylene glycol, dimethyl sulfoxide, and dimethyl formamide present in an amount of 1 to 50 wt % based on the total weight of pullulan and plasticizer.
Claim 3
Dependent Claim
32 words
A resin composition according to claim 1 which has been incorporated with at least one member selected from the group consisting of calcium carbonate, calcium sulfate, magnesium carbonate, titanium oxide and clay.
Claim 4
Dependent Claim
28 words
A resin composition according to claim 1 which has been incorporated with at least one member selected from the group consisting of pigments, antioxidants, ultraviolet absorbers and antiseptics.
Claim 5
Dependent Claim
16 words
The resin composition of claim 1 wherein said hydrophilic pullulan resin is pullulan or acetylated pullulan.
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) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |