C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 67/02 (2006.01) C08G 63/181 (2006.01) C08G 63/20 (2006.01) C08G 63/60 (2006.01) C08L 67/00 (2006.01)
Patent
CA 2083280
2083280 9217521 PCTABS00016 Block copolymers of polyester resins obtained by reaction under polyaddition reaction in the solid state of different polyester resins in the presence of a bifunctional compound containing groups reactive with the COOH and/or OH groups of the polyester resin. The copolymers have formula X - A - Y wherein X and Y are different blocks of a polyester resin; A is an organic radical deriving in particular from a dianhydride of an aromatic tetracarboxylic acid.
Macrae & Co.
Sinco Engineering S.p.a.
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