US3856746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic composition for molding
Assignee: Lion Fat and Oil Co Ltd
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Filing: 1973-06-04
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Granted: 1974-12-24
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Expires: 1993-06-04
Abstract
Abstract The invention relates to a novel thermoplastic resin composition of improved color and strength characteristics consisting essentially of a thermoplastic resin and (1) calcium sulfite or (2) a mixture of calcium sulfite and a calcium sulfate compound; optionally also with a minor amount of glycerine, ethylene glycol and boric acid.
Inventors
- 👤 R Susuki
- 👤 H Hoshi
- 👤 H Yamada
- 👤 J Saito
- 👤 K Murakami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:05
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
154 words
A THERMOPLASTIC MOLDABLE RESIN COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF (1) 20 TO 90 PERCENT BY WEIGHT. BASED ON THE TOTAL WEIGHT OF THE COMPOSITION, OF A FINELY DIVIDED FILLER MATERIAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM SULFITE HEMIHYDRATE HAVING A PARTICLE SIZE OF LESS THAN ABOUT 60 U AND ANHYDROUS CALCIUM SULFFITE HAVING A PARTICLE SIZE OF LESS THAN ABOUT 60U, AS THE SOLE FILLER MATERIAL IN SAID COMPOSITION AND (2) THE BALANCE OF THE COMPOSITION IS RESIN INGREDIENT CONSISTING OF (A) FROM 0 TO 5 PERCENT BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE COMPOSITION, OFF AN ETHYLENE-PROPYLENE RUBBER OR A STYRENE-BUTADIENE RUBBER AND THE BALANCE OF THE RESIN INGREDIENT (2) BEING (B) A RESIN SELECTED FROM THE GROU CONSISTING OF POLYOLEFIN, POLYVINYL-CHLORIDE, POLYSTYRENE, VINYL, CHLORIDE - VINYL ACETATE COPOLYMER, ETHYLENE - PRROPYLENE, COPOLYMER, ACRYLONITRILE-BUTADIENE-STYRENE COPOLYMER POLYAMIDE, POLYESTER AN MIXTURES OF POLYETHYLENE AND ETHYLENE - VINYL - ACETATE COPOLYMER.
Claim 2
Dependent Claim
154 words
A THERMOPLASTIC MOLDABLE RESIN COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF (1) 20 TO 90 PERCENT BY WEIGHT. BASED ON THE TOTAL WEIGHT OF THE COMPOSITION, OF A FINELY DIVIDED FILLER MATERIAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM SULFITE HEMIHYDRATE HAVING A PARTICLE SIZE OF LESS THAN ABOUT 60 U AND ANHYDROUS CALCIUM SULFFITE HAVING A PARTICLE SIZE OF LESS THAN ABOUT 60U, AS THE SOLE FILLER MATERIAL IN SAID COMPOSITION AND (2) THE BALANCE OF THE COMPOSITION IS RESIN INGREDIENT CONSISTING OF (A) FROM 0 TO 5 PERCENT BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE COMPOSITION, OFF AN ETHYLENE-PROPYLENE RUBBER OR A STYRENE-BUTADIENE RUBBER AND THE BALANCE OF THE RESIN INGREDIENT (2) BEING (B) A RESIN SELECTED FROM THE GROU CONSISTING OF POLYOLEFIN, POLYVINYL-CHLORIDE, POLYSTYRENE, VINYL, CHLORIDE - VINYL ACETATE COPOLYMER, ETHYLENE - PRROPYLENE, COPOLYMER, ACRYLONITRILE-BUTADIENE-STYRENE COPOLYMER POLYAMIDE, POLYESTER AN MIXTURES OF POLYETHYLENE AND ETHYLENE - VINYL - ACETATE COPOLYMER.
Claim 3
Dependent Claim
24 words
A thermoplastic moldable resin composition according to claim 1, containing in addition from 0.1 to 5 percent by weight of glycerine or ethylene glycol.
Claim 4
Dependent Claim
22 words
A thermoplastic moldable resin composition according to claim 2, containing in addition from 0.03 to 2.5 percent by weight of boric acid.
Claim 5
Dependent Claim
16 words
A thermoplastic moldable resin composition according to claim 1, in which said resin is a polyolefin.
Claim 6
Dependent Claim
30 words
A thermoplastic moldable resin composition according to claim 1, in which said filler material is from 60 to 90 percent by weight, based on the total weight of the composition.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |