Welded composites that consist of glass-fiber reinforced molded parts that were pretreated with epoxypolymers

US6521326B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Michael Fischer · Ludwigshafen, DE
• Walter Rau · Großweil, DE
• Martin Welz · Bad Dürkheim, DE

Key dates

• Filing date: Nov 19, 2001
• Grant date: Feb 18, 2003
• Expiry date: Nov 19, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31797
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A composite is composed of at least one first molding and one second molding, where the first molding and the second molding have been immovably bonded to one another via at least one partial region of one surface &agr; of the first molding and of one surface &bgr; of the second molding, via a welded region, and where, based on the first molding, at least 50% by weight of the first molding is composed of a molding composition comprising:A) from 5 to 99% by weight of a polyester,B) from 1 to 95% by weight of a fibrous filler pretreated with an aminosilane compound and with an epoxy polymer,C) from 0 to 30% by weight of an elastomeric polymer, andD) from 0 to 40% by weight of other additives,where the total of the percentages by weight of components A) to D) is 100%.Laminates made from these composites, and products produced therefrom and recycled materials obtained therefrom, are described, as is the use of all of these, in particular in automotive construction.