Patent · US Expired

Process of making a homogeneous floor covering

US6251321A · kind A · utility

3Cited by

1References

6Claims

0Family size

Assignee

Carl Freudenberg KG · DE

Inventors

Hans-Michael Kuhl · Hirschberg, DE
Gerhard Graab · Mannheim, DE
Klaus Heckel · Weinheim, DE

Key dates

Filing date	Jun 28, 1999
Grant date	Jun 26, 2001
Priority date	—
Expiry date	Jun 28, 2019

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24942
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A homogeneous floor covering composed of elastomer, varicolored granular particles contains 3 to 20 per cent by weight of a copolymer of ethylene, including at least one comonomer of vinyl esters of saturated carboxylic acids having up to 4 C-atoms in the acid group, or including at least one unsaturated mono- or dicarboxylic acid, or including at least one ester of unsaturated mono- or dicarboxylic acids having up to 8 C-atoms in the alcohol portion. In this context, the ethylene content of the copolymer is 40 to 95% per cent by weight, the rest is comonomer, and the melt-flow index of the copolymer must lie between 0.1 and 50. A corresponding manufacturing process is specified.

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