Thermoplastic compositions for producing metallic moldings
First Claim
1. A thermoplastic composition for producing a metallic molding, containingA) 40-65% by volume of a sinterable pulverulent metal or of a pulverulent metal alloy or of a mixture thereof,B) 35-60% by volume of a mixture ofB1) 85-95% by weight of a polyoxymethylene homopolymer or copolymer andB2) 4-15% by weight of a polymer homogeneously dissolved in B1) or dispersed therein with an average particle size of less than1 μ
- m, as binder, andC) 0-5% by volume of a dispersant,wherein component B2) is an aliphatic uncrosslinked polyepoxide, an aliphatic polyamide or polyacrylate or a mixture thereof.
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Accused Products
Abstract
Thermoplastic compositions useful for producing metallic moldings contain
A) 40-65% by volume of a sinterable pulverulent metal or of a pulverulent metal alloy or of a mixture thereof,
B) 35-60% by volume of a mixture of
B1) 85-100% by weight of a polyoxymethylene homopolymer or copolymer and
B2) 0-15% by weight of a polymer homogeneously dissolved in B1) or dispersed therein with an average particle size of less than 1 μm,
C) 0-5% by volume of a dispersant.
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Citations
16 Claims
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1. A thermoplastic composition for producing a metallic molding, containing
A) 40-65% by volume of a sinterable pulverulent metal or of a pulverulent metal alloy or of a mixture thereof, B) 35-60% by volume of a mixture of B1) 85-95% by weight of a polyoxymethylene homopolymer or copolymer and B2) 4-15% by weight of a polymer homogeneously dissolved in B1) or dispersed therein with an average particle size of less than1 μ - m, as binder, and
C) 0-5% by volume of a dispersant, wherein component B2) is an aliphatic uncrosslinked polyepoxide, an aliphatic polyamide or polyacrylate or a mixture thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 14, 15, 16)
- m, as binder, and
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9. A process for preparing a thermoplastic composition containing as essential components
A) 40-65% by volume of a sinterable pulverulent metal or of a pulverulent metal alloy or of a mixture thereof, B) 35-60% by volume of a mixture of B1) 85-95% by weight of a polyoxymethylene homopolymer or copolymer and B2) 5-15% by weight of a polymer homogeneously dissolved in B1) or dispersed therein with an average particle size of less than 1 μ - m, as binder, and
C) 0-5% by volume of a dispersant, wherein component B2) is an aliphatic uncrosslinked polyepoxide, an aliphatic polyamide or polyacrylate or a mixture thereof which comprises a) melting component B) at 150°
-220°
C. and thenb) metering component A) into the melt stream of component B) with or without C) at a temperature within the same range as in step a). - View Dependent Claims (11, 12, 13)
- m, as binder, and
Specification
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- Resources
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Current AssigneeBASF AG (BASF SE)
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Original AssigneeBASF AG (BASF SE)
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Inventorster Maat, Johan H. H., Sterzel, Hans-Josef
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Primary Examiner(s)Michl, Paul R.
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Assistant Examiner(s)Cain, Edward J.
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Application NumberUS07/662,431Time in Patent Office761 DaysField of Search524/439, 524/440, 524/441, 264/63US Class Current524/439CPC Class CodesB22F 1/10 Metallic powder containing ...B22F 1/103 containing an organic bindi...B22F 2998/00 Supplementary information c...B22F 3/1025 not by heating onlyB22F 3/22 for producing castings from...B22F 3/225 by injection moldingB22F 3/227 by organic binder assisted ...C08K 3/013 Fillers, pigments or reinfo...C08K 3/08 MetalsC08L 2666/04 Macromolecular compounds ac...C08L 2666/14 Macromolecular compounds ac...C08L 33/06 of esters containing only c...C08L 59/00 Compositions of polyacetals...C08L 63/00 Compositions of epoxy resin...C08L 71/00 Compositions of polyethers ...C08L 75/04 PolyurethanesC08L 77/00 Compositions of polyamides ...
