Copolymers for rapid prototyping
First Claim
1. Spherical methyl methacrylate copolymers, the structural units of which includesa) 90 to 50 percent of methyl methacrylate, andb) 10 to 50 percent of at least one C2-10 -alkyl methacrylate,said percent, both occurrences, being relative to the weight of said copolymer, said copolymer being in the form of substantially spherical pellets having a volume average particle size of 6 to 50 microns, and a breadth of the particle size distribution of less than 2.0.
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Abstract
This invention relates to spherical methyl methacrylate copolymers with an average particle size of 6 to 50 μm and a narrow particle size distribution, and to a method of producing them. The invention further relates to the use of these spherical copolymers for the production of 3-D models by laser sintering.
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Citations
6 Claims
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1. Spherical methyl methacrylate copolymers, the structural units of which includes
a) 90 to 50 percent of methyl methacrylate, and b) 10 to 50 percent of at least one C2-10 -alkyl methacrylate, said percent, both occurrences, being relative to the weight of said copolymer, said copolymer being in the form of substantially spherical pellets having a volume average particle size of 6 to 50 microns, and a breadth of the particle size distribution of less than 2.0.
Specification