C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/131, 403/43,
C08G 18/40 (2006.01) A01N 25/10 (2006.01) A01N 25/28 (2006.01) B01J 13/16 (2006.01) C08G 18/10 (2006.01) C08G 18/12 (2006.01) C08J 3/02 (2006.01) C08J 3/12 (2006.01)
Patent
CA 1136797
Abstract of the disclosure: Pressure-resistant polyurethane-polyurea particles with textured internal mass prepared from a liquid phase immiscible with water and containing organic solvents,iso- cyanate prepolymers and optionally active substances or mixtures of active substances, the liquid phase being dis- persed in an aqueous phase at temperatures of from 0°C to 95°C, wherein the liquid organic phase contains as isocya- nate prepolymer a reaction product of a stoichiometric ex- cess of an aliphatic, aromatic, cycloaliphatic, or arali- phatic di- or polyisocyanate with a oi- or polyol, the re- action product having a mean molecular weight in the range of from about 300 to 10,000, and an alkyl and/or alkoxyal- kyl acetate of the formula Image in which m is zero, 1 or 2, n is 1 to 4, and R is (C1-C5)- alkyl, and the aqueous phase contains a protective colloid and optionally a surface-active agent.
318326
Albrecht Konrad
Frensch Heinz
Heinrich Rudolf
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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