Patent · US Expired

Microcapsule suspensions

US6730635B2 · kind B2 · utility

14Cited by

7References

6Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Hilmar Wolf · Langenfeld, DE
Norbert Schick · Solingen, DE
Bjorn Eggert Christensen · Paseo Los Muchachos, DK
Anne Suty-Heinze · Langenfeld, DE

Key dates

Filing date	Sep 12, 2002
Grant date	May 4, 2004
Priority date	—
Expiry date	Sep 12, 2022

Classification

Technology area (CPC A)Human Necessities
CPC primaryA01N51/00
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The invention relates to microcapsule suspensions containing(A) a particulate disperse phase of microcapsules comprising:(1) sleeves that are reaction products of mixtures of toluylene diisocyanate and 4,4′-methylenebis-(cyclohexyl isocyanate) with at least one diamine and/or polyamine, and(2) a capsule filling comprising:(i) at least one solid insecticidally and/or herbicidally active compound,(ii) at least one liquid aliphatic hydrocarbon having a boiling point above 160° C.,(iii) at least one oil-soluble polymeric dispersing agent, and(iv) optional agrochemically active compounds that are liquid at room temperature, and(B) a liquid aqueous phase comprising water, optional additives, and optional agrochemically active compounds in non-encapsulated form that are solid at room temperature.

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