C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 64/02 (2006.01) C08G 64/30 (2006.01)
Patent
CA 2704022
This invention relates to solventless processes for the polymerization of an unsubstituted or substituted trimethylene carbonate to an unsubstituted or substituted poly(1,3-propanediol carbonate 1,3-propanediol ether) diol, using one or more solid acid catalysts.
La présente invention concerne des procédés sans solvant pour la polymérisation d'un carbonate de triméthylène non substitué ou substitué en un poly(éther de 1,3-propanediol et de carbonate de 1,3-propanediol)diol, à l'aide d'un ou plusieurs catalyseurs acides solides.
Dicosimo Robert
Drysdale Neville Everton
Sunkara Hari Babu
E. I. Du Pont de Nemours And Company
Torys Llp
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