Patent US4049593A successfully refreshed from Google Patents.
US4049593A
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Inorganic substance composition and process for producing same
Assignee: Mitsubishi Chemical Corp
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Filing: 1976-10-19
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Granted: 1977-09-20
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Expires: 1996-10-19
Abstract
Abstract An inorganic substance composition comprising at least 50% by weight of a finely divided inorganic substance and 2 to 50% by weight of a fiber forming organic polymeric material and having a specific surface area of more than 2 m2/g is described. The composition is prepared by preparing a liquid suspension from the inorganic substance, the organic polymeric material and a solvent; heating the liquid suspension to at least 100 DEG C to dissolve the organic polymeric material in the solvent; and then extruding the heated liquid suspension at a pressure equal to or higher than the vapor pressure of the solvent through an orifice into a zone of a lower pressure to evaporate the solvent.
Inventors
- 👤 Hiroshi Sato
- 👤 Munehiro Okumura
- 👤 Fujio Itani
- 👤 Shouji Fujii
- 👤 Tsutomu Kakuda
- 👤 Hiroshi Nakatui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:56
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; C09K3/1025; C09K3/1028; C04; C04B; C04B30/00; C04B30/02; C08; C08K; C08K3/00; C08K3/01; C08K3/013; D; D01; D01D; D01D5/00; D01D5/11; D21; D21H; D21H13/00; D21H13/10; D21H13/12; D21H13/14; D21H5/00; D21H5/12; C09K2200/00; C09K2200/02; C09K2200/0204; C09K2200/0208; C09K2200/0239; C09K2200/0243; C09K2200/0247; C09K2200/0252; C09K2200/0278; C09K2200/0286; C09K2200/06; C09K2200/0692; D21H13/36; D21H13/38; D21H13/40; D21H13/46; D21H13/48; D21H13/50; D21H15/00; D21H15/02; D21H15/08; D21H15/10; D21H15/12; D21H21/00; D21H21/14; D21H21/34; Y; Y10; Y10S; Y10S264/00; Y10S264/05; Y10S264/17; Y10S521/00; Y10S521/917
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
84 words
An inorganic substance composition comprising about 95% by weight of a finely divided inorganic substance and about 5% by weight of a fiber forming organic linear high molecular weight synthetic polymeric material; said inorganic substance composition being in the form of fine fibrous-like, flake-like or sliver-like structures and having a specific surface area of at least 10 m 2 /g and a porous structure containing a plurality of fine, irregular voids therein, the wall forming each void being less than 5 micron in thickness.
Claim 2
Dependent Claim
84 words
An inorganic substance composition comprising about 95% by weight of a finely divided inorganic substance and about 5% by weight of a fiber forming organic linear high molecular weight synthetic polymeric material; said inorganic substance composition being in the form of fine fibrous-like, flake-like or sliver-like structures and having a specific surface area of at least 10 m 2 /g and a porous structure containing a plurality of fine, irregular voids therein, the wall forming each void being less than 5 micron in thickness.
Claim 3
Dependent Claim
23 words
An inorganic substance composition according to claim 1, wherein said finely divided inorganic substance has a maximum size of up to 500 micron.
Claim 4
Dependent Claim
49 words
An inorganic substance composition according to claim 1, wherein said finely divided inorganic substance is at least one selected from the group consisting of finely divided silicic acid, diatomaceous earth, magnesium carbonate, clay, talc, calcium carbonate, titanium oxide, graphite, carbon black, mica, antimony trioxide, asbesto, alumina and calcium sulfate.
Claim 5
Dependent Claim
17 words
An inorganic substance composition according to claim 1, wherein said fiber forming organic polymeric material is polyethylene.
Claim 6
Dependent Claim
17 words
An inorganic substance composition according to claim 1, wherein said fiber forming organic polymer material is polypropylene.
Claim 7
Dependent Claim
18 words
An inorganic substance composition according to claim 1, wherein said fiber forming organic polymeric material is polyethylene terephthalate.
Claim 8
Dependent Claim
28 words
An inorganic substance composition according to claim 1, wherein said fiber forming organic polymeric material is polyacrylonitrile or a copolymer containing at least 50% by weight of acrylonitrile.
Claim 9
Dependent Claim
18 words
An inorganic substance composition according to claim 1, wherein said fiber forming organic polymeric material is polyvinyl chloride.
Claim 10
Dependent Claim
30 words
An inorganic substance composition according to claim 1, wherein said fiber forming organic polymeric material is polymethyl methacrylate or a copolymer containing at least 50% by weight of methyl methacrylate.
Claim 11
Dependent Claim
37 words
An inorganic substance composition according to claim 1, wherein said fiber forming organic polymeric material is at least one selected from a copolymer of vinyl acetate and ethylene, and a product prepared by hydrolysis of said copolymer.
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) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |