EP0325425A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Plastic compositions of inorganic powders and sintered bodies of the same
Assignee: Takeda Pharmaceutical Co Ltd
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Filing: 1989-01-18
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Granted: —
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Expires: 2009-01-18
Abstract
Abstract An aqueous plastic composition of an inorganic powder which per se has substantially no plasticity which comprises: the inorganic powder and a polysaccharide of natural origin. The molding and sintering of the plastic composition provide a sintered body of high mechanical strength and dimensional accuracy.
Inventors
- 👤 Tatsuro Takeuchi
- 👤 Motoya Mouri
- 👤 Tetsuya Sahara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 02:41
CPC Classifications
C; C04; C04B; C04B35/00; C04B33/00; C04B33/02; C04B33/04; C04B24/00; C04B24/08; C04B35/622; C04B35/626; C04B35/63; C04B35/632; C04B35/636; C04B35/6365
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
26 words
An aqueous plastic composition of an inorganic powder which per se has substantially no plasticity which copmrises: the inorganic powder and a polysaccharide of natural origin.
Claim 2
Dependent Claim
26 words
An aqueous plastic composition of an inorganic powder which per se has substantially no plasticity which copmrises: the inorganic powder and a polysaccharide of natural origin.
Claim 3
Dependent Claim
13 words
The plastic composition as claimed in claim 1 wherein the polysaccharide is water-retentive.
Claim 4
Dependent Claim
15 words
The plastic composition as claimed in claim 1 wherein the polysaccharide is of microbial origin.
Claim 5
Dependent Claim
14 words
The plastic composition as claimed in claim1 wherein the polysaccharide is of plant origin.
Claim 6
Dependent Claim
15 words
The plastic composition as claimed in claim 1 wherein the polysaccharide is of animal origin.
Claim 7
Dependent Claim
17 words
The plastic composition as claimed in claim 1 wherein the polysaccharide of microbial origin is a glucan.
Claim 8
Dependent Claim
13 words
The plastic composition as claimed in claim 1 wherein the glucan is curdlan.
Claim 9
Dependent Claim
13 words
The plastic composition as claimed in claim 1 wherein the glucan is pllulan.
Claim 10
Dependent Claim
15 words
The plastic composition as claimed in claim 1 wherein the composition contains a molding assistance.
Claim 11
Dependent Claim
31 words
The plastic composition as claimed in claim 1 wherein the molding assistance is a cellulosic compound, a polyhydric compound, a polyvinyl compound or a mixture of one or more of these.
Claim 12
Dependent Claim
27 words
The plastic composition as claimed in claim 1 wherein the composition contains the polysaccharide in amounts of about 0.1-10 % by weight based on the inorganic powder.
Claim 13
Dependent Claim
35 words
A sintered body of an inorganic powder which is produced by sintering an aqueous plastic composition of an inorganic powder which per se has substantially no plasticity which comprises the inorganic powder and a polysaccharide.
Claim 14
Dependent Claim
35 words
A sintered body of an inorganic powder which is produced by sintering an aqueous plastic composition of an inorganic powder which per se has substantially no plasticity which comprises the inorganic powder and a polysaccharide.
Claim 15
Dependent Claim
15 words
The sintered body as claimed in claim 12 wherein the polysaccharide is of microbial origin.
Claim 16
Dependent Claim
17 words
The sintered body as claimed in claim 12 wherein the polysaccharide of microbial origin is a glucan.
Claim 17
Dependent Claim
13 words
The sintered body as claimed in claim 14 wherein the glucan is curdlan.
Claim 18
Dependent Claim
13 words
The sintered body as claimed in claim 14 wherein the glucan is pullulan.
Claim 19
Dependent Claim
15 words
The sintered body as claimed in claim 12 wherein the composition contains a molding assistance.
Claim 20
Dependent Claim
31 words
The sintered body as claimed in claim 17 wherein the molding assistance is a cellulosic compound, a polyhydric compound, a polyvinyl compound or a mixture of one or more of these.
Claim 21
Dependent Claim
27 words
The sintered body as claimed in claim 12 wherein the composition contains the polysaccharide in amounts of about 0.1-10 % by weight based on the inorganic powder.
Claim 22
Independent Claim
53 words
A method of producing a sintered body of an inorganic powder which per se has substantially no plasticity which comprises: admixing and kneading the inorganic powder with a polysaccharide in the presence of water in amounts sufficient to provide a plastic composition, molding the plastic compostion, and drying and sintering the plastic composition.
Claim 23
Independent Claim
53 words
A method of producing a sintered body of an inorganic powder which per se has substantially no plasticity which comprises: admixing and kneading the inorganic powder with a polysaccharide in the presence of water in amounts sufficient to provide a plastic composition, molding the plastic compostion, and drying and sintering the plastic composition.
Claim 24
Dependent Claim
14 words
The method as claimed in claim 20 wherein the polysaccharide is of microbial origin.
Claim 25
Dependent Claim
14 words
The method as claimed in claim 20 wherein the polysaccharide is of plant origin.
Claim 26
Dependent Claim
14 words
The method as claimed in claim 20 wherein the polysaccharide is of animal origin.
Claim 27
Dependent Claim
16 words
The method as claimed in claim 21 wherein the polysaccharide of microbial origin is a glucan.
Claim 28
Dependent Claim
12 words
The method as claimed in claim 24 wherein the glucan is curdlan.
Claim 29
Dependent Claim
12 words
The method as claimed in claim 24 wherein the glucan is pllulan.
Claim 30
Dependent Claim
15 words
The method as claimed in claim 20 wherein the plastic matter contains a molding assistance.
Claim 31
Dependent Claim
30 words
The method as claimed in claim 27 wherein the molding assistance is a cellulosic compound, a polyhydric compound, a polyvinyl compound or a mixture of one or more of these.
Claim 32
Dependent Claim
26 words
The method as claimed in claim 20 wherein the composition contains the polysaccharide in amounts of about 0.1-10 % by weight based on the inorganic powder.
References Cited (Backward Citations)
No citation records indexed.
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