Process for producing storable concentrates and their use for producing surface coatings

US4543375A · kind A · utility

Assignee

• Herberts Gesellschaft mit beschrankter Haftung · DE

Inventors

• Klaus-Peter Doebler · Radevormwald, DE
• Knut Graf · Hattingen, DE
• Kurt Jager
• Friedrich Johannsen · Heiligenhaus, DE
• Jurgen Ritz
• Dietrich Saatweber · Wuppertal, DE

Key dates

• Filing date: Sep 13, 1984
• Grant date: Sep 24, 1985
• Expiry date: Sep 13, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S524/904
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Process for producing storable concentrates for producing paints containing water, undissolved, finely divided, as well as dissolved synthetic resins as paint binders, pigments, optionally paint additives and organic solvents by wet grinding in several stages, wherein PA1 (a) in a first grinding stage the undissolved synthetic resins, whereof at least 80% by weight are present with a particle size between 500 .mu.m and 20 mm, mixed with water, the solids content representing 30 to 70% by weight, based on the total mixture quantity, as well as 0 to 60% by weight of dissolved ionic synthetic resins (solids) are ground to a particle size of less than 200 .mu.m and preferably less than 100 .mu.m, and PA1 (b) 40 to 100% by weight of the dissolved ionic synthetic resins (solids) and pigments are added and the mixture is ground in a second grinding stage until 95% of all the particles have a particle size of less than 15 .mu.m.