Process for preparing thermoplastic molding compositions

US6316550A · kind A · utility

Assignee

• VESTOLIT GmbH & Co. KG · DE

Inventors

• Axel Stieneker · Hachenburg, DE
• Radu Bordeianu · Marl, DE
• Thomas Neu · Schneverdingen, DE
• Harald Sturm · Marl, DE
• Wilhelm Friedrich Schmitt · Dorsten, DE

Key dates

• Filing date: Dec 7, 2000
• Grant date: Nov 13, 2001
• Expiry date: Dec 7, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F285/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

One embodiment of the present invention provides a process, which includes: PA1 graft polymerizing a vinyl chloride monomer in suspension in the presence of a core-shell impact modifier; PA1 wherein the core-shell impact modifier includes: PA2 a core including polyvinyl chloride or vinyl chloride copolymers; and PA2 a shell including crosslinked alkyl (meth)acrylate homo- or copolymers. Another embodiment of the present invention provides a thermoplastic polyvinyl chloride molding composition modified with an elastomer-containing core-shell modifier, prepared by a process, which includes graft polymerizing a vinyl chloride monomer in suspension in the presence of a core-shell impact modifier; wherein the core-shell impact modifier includes a core including polyvinyl chloride or vinyl chloride copolymers; and a shell including crosslinked alkyl (meth)acrylate homo- or copolymers. Another embodiment of the present invention provides a plastic profile, which includes the above-noted composition. Another embodiment of the present invention provides an article selected from the group including window frame, pipe, film, siding and panel, which includes the above-noted composition. By the…