Plastic molded articles having a polymer matrix filled with inor

Details Plastic molded articles having a polymer matrix filled with inor Plastic molded articles having a polymer matrix filled with inor

1996-08-28

1998-09-01

Le, H. Thi

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428220, 428323, B32B 516

Patent

active

058009108

ABSTRACT:
To improve the resistance to scratching of plastic molded articles comprising a polymer matrix filled with inorganic fillers, the filler content being 50 to 90% by weight in relation to the filled matrix, it is suggested that the filler comprise two filler fractions (a) and (b), wherein the filler fraction (a) has a particle size distribution with 98% by weight of the particles having a particle size .ltoreq.150 .mu.m and is distributed essentially uniformly in the polymer matrix, and wherein the filler fraction (b) comprises particles having a particle size of approximately 300 .mu.m to approximately 3000 .mu.m, wherein the proportion of the filler fraction (b) is approximately 1 to 35% by weight of the total filler content, and wherein the proportion of the filler fraction (b) in an outer surface layer of the molded article is enriched to at least 30% by weight in relation to the total mass of the filled matrix.

REFERENCES:
patent: 5218013 (1993-06-01), Schock
patent: 5366619 (1994-11-01), Terada et al.
patent: 5480931 (1996-01-01), Hock et al.
patent: 5665795 (1997-09-01), Koushima et al.

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