Patent · US Expired

Pigment-containing premixture of titanium dioxide with olefin polymer

US5252658A · kind A · utility

3Cited by

5References

19Claims

0Family size

Assignee

Felix Schoeller GmbH & Co. KG · DE

Inventors

Ralf-Burkhard Dethlefs · Osnabrück, DE
Bernd Scholz · Osnabrück, DE
Wolfram Wysk · Belm, DE

Key dates

Filing date	Nov 22, 1989
Grant date	Oct 12, 1993
Priority date	—
Expiry date	Nov 22, 2009

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2423/00
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A premixture composition for the production of water-resistant photographic support material coated with polyolefin resin for light-sensitive materials of polyolefin resin and light-reflecting white pigment comprises a polyolefin resin formed as a copolymer of ethylene and an .alpha.-olefin. A light-reflecting white pigment is intimately mixed with the said polyolefin resin. Hydrocarbon side chains derived of an .alpha.-olefin in the copolymer comprise C.sub.1 to C.sub.16 carbon atoms. The contents of the copolymer of ethylene and .alpha.-olefin in the premixture composition amounts to from about 10 weight-percent to 100 weight-percent of the complete premixture composition. The light-reflecting white pigment is titanium dioxide. The titanium dioxide employed in the mixture has been subjected to a chemical after-treatment.

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