Non-attritive method for making polyester polycarbonate or...

Details Non-attritive method for making polyester polycarbonate or... Non-attritive method for making polyester polycarbonate or...

C - Chemistry, Metallurgy

08

J

18/24, 402/6, 40

C08J 3/14 (2006.01) B05D 7/14 (2006.01) C03C 17/32 (2006.01) C08J 9/28 (2006.01) C09D 5/03 (2006.01) C09D 7/12 (2006.01)

Patent

CA 2006540

ABSTRACT NON-ATTRITIVE METHOD FOR MAKING POLYESTER, POLYCARBONATE OR POLYAMIDE PARTICLES, PARTICLES OBTAINABLE BY THE METHOD AND THEIR USE A non-attritive method for making fine particles of crystallisable polyester, polycarbonate or polyamide polymers or blends thereof which comprises heating a mixture of the polymer in a moderate solvent for the polymer to a temperature above the melting point of the polymer when in the moderate solvent and then cooling whereupon the particles re-crystalise from the mixture. Also crystalline particles comprising amorphous zones containing entrapped moderate solvent and the use of such particles in coating, in coating compositions and in making porous particles.

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