Patent · US Expired

Thermoplastics, reinforced with glass fiber mats, which possess improved rigidity

US4146528A · kind A · utility

4Cited by

3References

4Claims

0Family size

Assignee

BASF SE

Inventors

Rainer Theysohn · Bischofswerda, DE
Martin Welz · Bad Dürkheim, DE
Rolf Wurmb

Key dates

Filing date	Feb 1, 1978
Grant date	Mar 27, 1979
Priority date	—
Expiry date	Feb 1, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/67
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Thermoplastics reinforced with glass fiber mats contain from 10 to 60% by weight of such mats and from 5 to 60% by weight of a finely divided inert filler, the sum of the percentages by weight of glass fiber mats and filler being not greater than 70% by weight. The inert filler is a talc, having a foliated crystalline structure, which has a mean flake thickness of not more than 5 .mu.m and a ratio of mean flake diameter to mean flake thickness of from 5:1 to 500:1. When processing the thermoplastic filled with talc and glass fiber mats, homogeneous impregnation of the glass fiber mats with the filled thermoplastic is achieved.

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