Patent · US Expired

Process for the production of carbon black containing pigment-synthetic resin concentrates

US4379871A · kind A · utility

10Cited by

7References

40Claims

0Family size

Assignee

Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler

Inventors

Peter Werle · Gelnhausen, DE
Hans Graf · Buchs, CH
Erwin Walter · Hörstein, DE

Key dates

Filing date	Dec 30, 1977
Grant date	Apr 12, 1983
Priority date	—
Expiry date	Dec 30, 1997

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J3/226
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

There is disclosed a process for the production of a pigment-synthetic resin concentrate containing an organic solvent soluble polymer and carbon black having quicker distributability in organic media such as lacquer binding media, printing inks, etc., such concentrates being especially suitable for the production of molded parts, castings, films and/or synthetic fibers, the process comprising continuously homogenizing in a mixer powdery pigment and powdery synthetic resin jointly with an organic solvent in a given case also containing plasticizer, stabilizer and/or dispersing acid, dispersing the pigment in the mixture, removing the solvent from the dispersion, comminuting the resulting pigment-synthetic resin concentrated and grinding the product.

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