Patent EP0329475A2 successfully refreshed from Google Patents.
EP0329475A2
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Mouldable composition
Assignee: Sanyo Chemical Industries Ltd
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Filing: 1989-02-17
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Granted: —
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Expires: 2009-02-17
Abstract
Abstract Mouldable compositions comprising a metallic powder or a combination thereof with ceramic powder, mixed with an organic binder are disclosed, at least a part of which binder comprises a synthetic resin component (A) having a heat deformation temperature of 130°C or higher. The component A may be used in combination with another component (B) having a melting point of 30°C - 100°C, with or without another thermoplastic component (C), having a heat deformation temperature of 130°C or less. Mouldable compositions, comprising metallic and/or ceramic powder mixed with an organic binder comprising a secondary or tertiary amine (D), or a combination thereof with a thermoplastic resin (E), are also disclosed.
Inventors
- 👤 Jiroh Ryuhgoh
- 👤 Kohshi Kawamoto
- 👤 Takahior Osanaga
- 👤 Yoshiroh Nakata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 09:35
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/22; B22F3/225; B22F1/00; B22F1/10; B22F1/103; B22F3/10; B22F3/1017; B22F3/1021; C; C04; C04B; C04B35/00; C04B35/622; C04B35/626; C04B35/63; C04B35/632; C04B35/634; C04B35/63404; C04B35/63424; C04B35/63444; C04B35/63448; C04B35/6346; C04B35/63464; C04B35/63468; C04B35/63488; C04B35/638; C08; C08K; C08K3/00; C08K3/01; C08K3/013; C08K3/02; C08K3/08; C08K3/18; C08K3/20; C08K3/22; C08K3/34; B22F2998/00
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
75 words
A mouldable composition comprising: a particulate material comprising a metallic powder and/or ceramic powder, mixed with a binder being one of (1), (2) and (3): (1) an organic binder comprising at least one synthetic resin component (A) having a heat deformation temperature of 130°C or higher; (2) an organic binder comprising at least one polyether; (3) an organic binder comprising at least one secondary and/or tertiary amine (D) and optionally at least one resin (E).
Claim 2
Dependent Claim
75 words
A mouldable composition comprising: a particulate material comprising a metallic powder and/or ceramic powder, mixed with a binder being one of (1), (2) and (3): (1) an organic binder comprising at least one synthetic resin component (A) having a heat deformation temperature of 130°C or higher; (2) an organic binder comprising at least one polyether; (3) an organic binder comprising at least one secondary and/or tertiary amine (D) and optionally at least one resin (E).
Claim 3
Dependent Claim
29 words
A composition according to claim 1, in which the binder is (1) and further comprises at least one other component (B) having a melting point of 30°C - 100°C.
Claim 4
Dependent Claim
33 words
A composition according to claim 1 or 2, in which the binder is (1) and further comprises at least one other thermo-plastic component (C), having a heat deformation temperature of 130°C or less.
Claim 5
Dependent Claim
28 words
A composition according to any of claims 1 to 3, in which component A comprises at least one resin selected from polyacetals, polyphenylene-oxides, polysulfones, polycarbonates, polyesters and polyamides.
Claim 6
Dependent Claim
38 words
A composition according to any of claims 2 to 4, in which component B when present is at least one of a polyether, a wax, a fatty acid, or salt thereof, a fatty amine and a fatty alcohol.
Claim 7
Dependent Claim
28 words
A composition according to any of claims 2 to 4, in which component B when present is a polyethylene glycol having a molecular weight of at most 20,000.
Claim 8
Dependent Claim
28 words
A composition according to any of claims 2 to 6, which contains component B an amount of 40 - 70 %, based on the weight of the binder.
Claim 9
Dependent Claim
30 words
A composition according to any of claims 3 to 6, in which component C when present is at least one thermoplastic resin selected from polyethylene-oxides, polyethylenes, polypropylenes, polyacrylates and polymethacrylates.
Claim 10
Dependent Claim
28 words
A composition according to any one of claims 3 to 7, in which component C when present is a polyethyleneoxide having a molecular weight of at least 100,000.
Claim 11
Dependent Claim
28 words
A composition according to any of claims 3 to 9, which contains component C an amount of at most 40 %, based on the weight of the binder.
Claim 12
Dependent Claim
88 words
A composition according to claim 1, in which the binder is (2) and comprises at least one polyether represented by the formula: R AZ R′ ] m (1) wherein R is a resin of active hydrogen atom-containing compound; R′ is H, a mono-valent hydrocarbon radical or acyl radical; Z is an alkylene radical containing 1 - 4 carbon atoms or an alkylene radical containing 2 - 4 carbon atoms having an aryl-substituent; m is an integer between 1 and 8; and n is an integer greater than 1.
Claim 13
Dependent Claim
112 words
A composition according to claim 1, in which the binder is (3) and comprises a secondary amines or tertiary amine (component D ) represented by the formula: wherein R₁ is a monovalent hydrocarbon radical containing 5 - 30 carbon atoms, R₂ is hydrogen atom or a monovalent hydrocarbon radical containing 1 - 30 carbon atoms, R₃ is hydrogen atom or a monovalent hydrocarbon radical containing 1 - 30 carbon atoms, R₄ is hydrogen atom or a monovalent hydrocarbon radical containing 1 - 5 carbon atoms, Y is an alkylene group containing 2 - 4 carbon atoms, which may have an aryl side group, and n is an integer of 0 - 5.
Claim 14
Dependent Claim
33 words
A composition according to claim 1 or 2, in which component E is at least one resin selected from addition polymers of one or more unsaturated compounds, polycondensation polymers and ring-opening polymerization polymers.
Claim 15
Dependent Claim
28 words
A composition according to claim 1, 12 or 13, which contains component E in an amount of 0.5 - 50 %, based on the weight of the binder.
Claim 16
Dependent Claim
36 words
A composition according to any of claims 1 to 14, in which a part of component A or component E is a powder of at least one resin selected from crosslinked thermoplastic resins and thermosetting resins.
Claim 17
Dependent Claim
26 words
A composition according to claim 15, in which the resin powder has an average particle diameter smaller than that of the ceramic powder and/or metallic powder.
Claim 18
Dependent Claim
27 words
A process for producing a mouldable composition according to any of claims 1 - 16, which comprises kneading under heating the particulate material with the organic binder.
Claim 19
Dependent Claim
36 words
A process according to claim 17, in which the kneading is carried out at a temperature lower than the heat deformation temperature of a resin powder which is a part of component A or component E.
Claim 20
Dependent Claim
23 words
A process according to claim 17 or 18, in which the kneading is carried out under a non-oxidizing atmosphere or in vacuo .
Claim 21
Dependent Claim
41 words
A process for producing a sintered body, which comprises shaping a body from a mouldable composition obtainable according to a process according to claim 17, 18 or 19, heating the shaped body to remove the binder, and sintering the unbound body.
Claim 22
Dependent Claim
21 words
A process according to claim 20, in which the shaping is carried out under a non-oxidizing atmosphere or in vacuo .
Claim 23
Dependent Claim
19 words
A process according to claim 20 or 21, in which the shaped body is heated under an oxidizing atmosphere.
Claim 24
Dependent Claim
30 words
A process according to any of claims 20, 21 or 22, in which the shaped body is heated at an atmosphere temperature of at most 250°C to remove the binder.
Claim 25
Dependent Claim
42 words
A process according to any of claims 20 to 23, in which the shaped body is heated by placing it on a shelf through which the atmosphere can flow so as to expose the body surface including the underside to the atmosphere.
Claim 26
Dependent Claim
20 words
A process according to any of claims 20 to 24, in which the sintering is carried out in vacuo .
Claim 27
Dependent Claim
21 words
A process according to claim 25, in which the sintering is carried out at a pressure of 10⁻³ Torr or less.
Claim 28
Dependent Claim
23 words
A process according to any of claims 20 - 25 in which the mouldable composition is shaped into a body by injection moulding.
Claim 29
Dependent Claim
15 words
A moulded article obtainable by a process according to any of claims 20 - 27.
References Cited (Backward Citations)
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