C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/306, 402/480
C07D 487/10 (2006.01) C08G 73/06 (2006.01)
Patent
CA 1335597
Linear, alternating copolymers and terpolymers of a 1,6-diaza[4,4]spirodilactam and a primary diamine and process for preparing such copolymers and terpolymers by reacting a dioxaspirononane dione or a precursor thereof with a primary diamine, optionally in the presence of a tri- or tetracarboxylic acid.
610508
Shell Canada Limited
Smart & Biggar
Wang Pen Chung
LandOfFree
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