Amino-functional polyester resins

Details Amino-functional polyester resins Amino-functional polyester resins

C - Chemistry, Metallurgy

08

G

C08G 63/685 (2006.01) C08G 18/46 (2006.01) C08G 63/91 (2006.01) C08J 7/04 (2006.01) C09D 175/06 (2006.01)

Patent

CA 2111927

AMINO-FUNCTIONAL POLYESTER RESINS ABSTRACT OF THE DISCLOSURE The present invention relates to a process for the production of polyester resins containing 0 to 10% by weight of hydroxyl groups and 0.01 to 9%, preferably 0.05 to 2%, by weight of nitrogen (expressed as N = 14) in the form of primary and/or secondary amino groups, by reacting in an addition reaction at 0 to 120°C i) polyester resins having a molecular weight (Mn) of 286 to 10,000 and containing an average per molecule of at least 2 structural units corresponding to the formula: Image and optionally alcoholic hydroxyl groups with ii) ammonia or primary monoamines corresponding to the formula: R-NH2 wherein R represents an aliphatic, cycloaliphatic or araliphatic radical optionally containing ether oxygen atoms and/or hydroxyl groups. The present invention also relates to the amino-functional and optionally hydroxy-functional polyester resins obtained by this process and to their use as a binder component in two-component polyurethane coating compositions, particularly for coating plastic moldings.

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