Rigid foam comprising a polyester polyol
AssigneesTereos Starch & Sweeteners Belgium, Centre National De La Recherche Scientifique, SociéTé Soprema SAS, Universite De Strasbourg
InventorsPierre Etienne BINDSCHEDLER, Alexandru SARBU, Stephanie LAURICHESSE, Remi PERRIN, Pierre FURTWENGLER, Luc AVÉROUS, Andreas REDL
Life of this patent
Estimating the term…
Abstract
A rigid foam or a composition allowing a rigid foam to be obtained, including a polyester polyol or a polymer including a polyester polyol, the polyester polyol being obtained by a first polycondensation (a) of a C3 to C8 sugar alcohol Z and two identical or different C4 to C36 diacids Y and Y′ and a second polycondensation (b) of the product obtained in (a) with two identical or different C2 to C12 diols X and X′.
Claims21
1-13. (canceled)
A rigid foam or composition allowing a rigid foam to be obtained comprising a polyester polyol or a polymer comprising a polyester polyol, said polyester polyol being obtained by a first polycondensation (a) of a C3 to C8 sugar alcohol Z and two identical or different C4 to C36 diacids Y and Y′ and a second polycondensation (b) of the product obtained in (a) with two identical or different C2 to C12 diols X and X′.
A rigid foam or a composition allowing a rigid foam to be obtained comprising a polyester polyol or a polymer comprising a polyester polyol, said polyol polyester having the general formula Rx-Ry-Z-Ry′-Rx′ wherein
- Z is a C3 to C8, preferably C4 to C7, typically C5-C6 sugar alcohol,
- Ry and Ry′ are diesters having formula —OOC—Cn—COO— with n between 2 and 34, preferably, between 3 and 22, typically between 4 and 10,
- Rx and Rx′ are identical or different C2 to C12, preferably C3 to C8, typically C4 monoalcohols.
Dependencies are inferred from the claim text.