1,6-diazaspiro(4,4)nonane-2,7-dione derivatives

Details 1,6-diazaspiro(4,4)nonane-2,7-dione derivatives 1,6-diazaspiro(4,4)nonane-2,7-dione derivatives

C - Chemistry, Metallurgy

07

D

402/270, 260/306

C07D 487/10 (2006.01) C08G 59/06 (2006.01) C08G 59/26 (2006.01) C08G 73/06 (2006.01) C08G 73/20 (2006.01)

Patent

CA 1334099

A 1,6-diazaspiro[4,4]nonane-2,7-dione derivative having the formula X-[-B-Y-(P-Y)-p]m-B-X, in which B is a divalent radical of formula (I), Image (I) wherein R independently is hydrogen or a C1-4 alkyl, A is a substituent replacing hydrogen selected independently from a C1-4 alkyl or halogen atom, and n independently is 0, 1 or 2; m ? 0; each X independently is hydrogen or a glycidyl group; Y is 2- hydroxy-1,3-propadiyl; each P independently is a divalent radical derived from a dihydric aromatic alcohol; and p is on average of from 0 to 3. The derivatives are useful for the preparation of polyhydric polyethers characterized by high glass transition temperatures, typically above 150°C. These polymers are useful, for example, for engineering applications, such as moulded containers for food and drink which are frequently exposed to elevated temperatures.

592749

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