	US 11,807,714 B2
	Semi-crystalline mixture of polyester polyols, and the use thereof
Adrian Brandt, Essen (DE); Horst Beck, Neuss (DE); Alexander Kux, Monheim (DE); and Kerstin Schroeder, Grevenbroich/Wevelinghoven (DE)
Assigned to Henkel AG & Co. KGaA, Duesseldorf (DE)
Filed by Henkel AG & Co. KGaA, Duesseldorf (DE)
Filed on Jan. 10, 2020, as Appl. No. 16/739,324.
Application 16/739,324 is a continuation of application No. PCT/EP2018/064662, filed on Jun. 4, 2018.
Claims priority of application No. 17181193 (EP), filed on Jul. 13, 2017.
Prior Publication US 2020/0148814 A1, May 14, 2020
Int. Cl. C08G 63/183 (2006.01); C08G 63/199 (2006.01); C08L 67/02 (2006.01); C09J 167/02 (2006.01); C08G 18/42 (2006.01); C08G 59/62 (2006.01); C08G 63/672 (2006.01); C09J 175/06 (2006.01)

CPC C08G 63/183 (2013.01) [C08G 18/425 (2013.01); C08G 18/4247 (2013.01); C08G 18/4252 (2013.01); C08G 18/4255 (2013.01); C08G 59/62 (2013.01); C08G 63/199 (2013.01); C08G 63/672 (2013.01); C08L 67/02 (2013.01); C09J 167/02 (2013.01); C09J 175/06 (2013.01); C08G 2170/20 (2013.01)]

20 Claims

1. A semi-crystalline mixture of polyester polyols which recrystallises upon melting prepared by polycondensation of a reaction mixture comprising one or more dicarboxylic acids and one or more diols, wherein

(a) at least 50 mol % of the dicarboxylic acids are selected from saturated aliphatic dicarboxylic acids having an even number of at least 8 methylene groups which have neither a tertiary nor a quaternary carbon atom; and

(b) at least 40 mol % of the diols are selected from aliphatic diols that have at least one ether function and have no tertiary or quaternary carbon atom, and

the semi-crystalline mixture of polyester polyols have exothermic recrystallisation that occurs during an endothermic melting process before reaching their softening point or transition to the liquid phase.