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.
1 Assignment
0 Petitions
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.
-
Citations
16 Claims
-
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
-
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