US 12,006,396 B2
Amorphous polyesters on the basis of betulin
Adrian Brandt, Essen (DE); Horst Beck, Neuss (DE); Kerstin Schroeder, Grevenbroich/Wevelinghoven (DE); and Alexander Kux, Monheim (DE)
Assigned to HENKEL AG & CO. KGaA, Duesseldorf (DE)
Filed by HENKEL AG & CO. KGAA, Duesseldorf (DE)
Filed on Jun. 19, 2020, as Appl. No. 16/906,613.
Application 16/906,613 is a continuation of application No. PCT/EP2018/083091, filed on Nov. 30, 2018.
Claims priority of application No. 17209984 (EP), filed on Dec. 22, 2017.
Prior Publication US 2020/0317859 A1, Oct. 8, 2020
Int. Cl. C08L 67/02 (2006.01); C08G 63/199 (2006.01); C08G 63/553 (2006.01); C08G 63/56 (2006.01); C08L 63/00 (2006.01); C08L 67/06 (2006.01); C08L 67/08 (2006.01); C08L 75/06 (2006.01); C09J 11/08 (2006.01); C09J 163/00 (2006.01); C09J 175/06 (2006.01); C09K 3/10 (2006.01)
CPC C08G 63/553 (2013.01) [C08G 63/199 (2013.01); C08G 63/56 (2013.01); C09J 11/08 (2013.01); C09K 3/10 (2013.01); C09K 2200/0655 (2013.01)] 16 Claims
 
1. An amorphous polyester prepared from a reactive raw material mixture of:
(a) betulin;
(b) dicarboxylic acid; and
(c) at least one compound selected from the group consisting of short-chain polyol, amine, and vegetable oil,
characterized in that the amorphous polyester has a glass transition temperature Tg in the range of −50° C. to 80° C., as determined by means of DSC, and all or part of the reactive raw materials are produced from renewable materials, such that the amorphous polyester includes a proportion of renewable raw materials of 90 to 100 wt. %, based on the total weight of the amorphous polyester.
 
9. A method for producing the amorphous polyester according to claim 1, comprising the following steps:
providing a reactive raw material mixture of: the (a) betulin, the (b) dicarboxylic acid, and the (c) at least one compound selected from the group consisting of short-chain polyol, amine, and vegetable oil; and
heating the mixture to a temperature of 200 to 250° C. to form the amorphous polyester.
 
11. The method according to claim 9, characterized in that the mixture further contains a catalyst, in an amount of 0.01 to 0.05 wt. %, based on the total weight of the mixture.