Patent · US Expired

Transparent, impact-resistant molding materials having high stress cracking resistance and a dull surface

US5576385A · kind A · utility

9Cited by

4References

3Claims

0Family size

Assignee

BASF SE

Inventors

Kristin Tiefensee · Bad Dürkheim, DE
Norbert G untherberg · Speyer, DE
Rainer Neumann · Krefeld, DE
Ekkehard Jahns · Weinheim, DE

Key dates

Filing date	Aug 29, 1995
Grant date	Nov 19, 1996
Priority date	—
Expiry date	Aug 29, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L51/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Thermoplastic molding materials containing a mixture of PA0 (A) from 15 to 70% by weight of a methacrylate polymer, PA0 (B) from 10 to 50% by weight of a copolymer obtained by polymerization of a mixture of PA1 (B1) a vinylaromatic monomer and PA1 (B2) a vinyl cyanide, PA0 (C) from 20 to 50% by weight of a graft copolymer of PA1 (C1) 50-80% by weight of a core of PA2 (C11) from 50 to 100% by weight of a 1,3-diene and PA2 (C12) from 0 to 50% by weight of a vinylaromatic monomer and PA1 (C2) 20-50% by weight of a graft shell of PA2 (C21) a C.sub.1 -C.sub.8 -alkyl ester of methacrylic or acrylic acid and PA2 (C22) a vinylaromatic monomer, with the proviso that the medium particle size (d.sub.50) of the graft copolymer is chosen in the range from 40 to 500 nm, and PA0 (D) from 0.5 to 15% by weight of a crosslinked methacrylate polymer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.