Patent · US Expired

Readily dispersible silicone-coated finely divided solids

US4369265A · kind A · utility

5Cited by

5References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Gunter Buxbaum · Krefeld, DE
Ottfried Schlak · Cologne, DE
Franz Hund · Krefeld, DE
Lutz Leitner · Krefeld, DE

Key dates

Filing date	Jun 18, 1980
Grant date	Jan 18, 1983
Priority date	—
Expiry date	Jun 18, 2000

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2995
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Readily dispersible finely divided solids such as pigments, coated with an organo-silicone polymer of the formula ##EQU1## wherein R.sup.I, R.sup.II, R.sup.III each independently is an optionally halogenated alkyl, alkenyl or aryl radical having from 1 to 10 carbon atoms; PA1 R.sup.IV is an alkyl or alkenyl radical having from 9 to 24 carbon atom; PA1 R.sup.V is an alkyl or alkenyl radical having from 1 to 8 carbon atoms; the sum of a+b+c is from 1 to about 1.95; d is a number from about 0.2 to 2; e and f each independently is a number from 0 to 1; the sum of d+e+f is from about 0.2 to 2; and the sum of a+b+c+d+e+f is up to 3.

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