Polymethylmethacrylate With a Nacreous Effect
(EN) The invent on relates to polymethylmethacrylate with a nacreous effect. (DE) Die Erfindung betrifft Polymethylmethacrylat mit Perlglanzeffekt.
1 . A process for production of plastics products with pearl-luster effect by means of extrusion or injection molding, characterized in that a mixture composed of from 5 to 35% of polyethylene terephthalate glycol and from 65 to 95% of polymethyl methacrylate and, if appropriate, from 0.01 to 5.0% of auxiliaries and additives is prepared and the mixture is extruded and, if appropriate, formed or injection-molded to give a plastics product.
2 . The process for production of plastics products with pearl-luster effect as claimed in claim 1 , characterized in that dyes are present.
3 . The process for production of plastics products with pearl-luster effect as claimed in claim 1 , characterized in that from 65 to 95% of polymethacrylate, from 5 to 35% of polyethylene terephthalate glycol and, if appropriate, from 0.01 to 5.0% of auxiliaries and additives are extruded at a temperature of from 160 to 300° C. to give semifinished products
4 . The process for production of plastics products with pearl-luster effect as claimed in claim 3 , characterized in that the extruded semifinished products are heated and, under pressure, formed.
5 . The process for production of plastics products with pearl-luster effect as claimed in claim 1 , characterized in that from 65 to 95% of polymethacrylate, from 5 to 35% of polyethylene terephthalate glyco and if appropriate, from 0.01 to 5.0% of auxiliaries and additives are injection-molded at a melt temperature of from 200 to 280° C.
6 . A mixture comprising from 65 to 95% of polymethacrylate and from 5 to 35% of polyethylene terephthalate glycol and, if appropriate, from 0.01 to 5.0% of auxiliaries and additives.
7 . The use of plastics products with pearl-luster effect as claimed in claim 1 in the construction sector, in the automobile sector in, shinbuilding and in aircraft construction.
8 . The use of plastics products with pearl-luster effect as claimed in claim 1 for packaging, decorative materials housing materials for electronic equipment, toys, office requisites.