C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/2, 400/2001
C08G 75/00 (2006.01) C08G 69/00 (2006.01) C08G 73/02 (2006.01)
Patent
CA 1265641
ABSTRACT A star-branched polyamide having at least 3 branches emanating from the residue of a core compound pending from a substantially linear polymer backbone wherein each branch has a plurality of amide moieties in which each such amide moiety has its amide nitrogen in the chain of the branch and each such amide nitrogen bears a pendant carbonyl moiety, said amide moieties being hydrolyzable to form amine moieties without cleaving the chain of the branch. Star-branched polyamides having good resistance to degradation upon exposure to shear are prepared by reacting polyvalent core compounds such has tribromoneopentyl alcohol with an oxazoline such as 2-ethyl-2-oxazoline to provide the desired polyamide. The polyamides are readily hydrolyzed with acid such as hydrochloric acid to form/star/comb-branched polyamines. The polyamides and the polyamines are useful as viscosity enhancing agents in such applications as paints, mobility control agents and hydraulic fluids. 31,963-F
494117
Hall Mark J.
Tomalia Donald A.
Dendritic Nanotechnologies Inc.
Smart & Biggar
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