	US 12,486,351 B2
	Solid surface materials with polyurethane matrix
Ann-Christin Bijlard, Bergisch Gladbach (DE); Lukas Breuers, Cologne (DE); and Joan Miguel Garcia Martinez, Barcelona (ES)
Assigned to Covestro Deutschland AG, Leverkusen (DE)
Appl. No. 16/496,517
Filed by Covestro Deutschland AG, Leverkusen (DE)
PCT Filed Mar. 21, 2018, PCT No. PCT/EP2018/057174 § 371(c)(1), (2) Date Sep. 23, 2019, PCT Pub. No. WO2018/172413, PCT Pub. Date Sep. 27, 2018.
Claims priority of application No. 17162822 (EP), filed on Mar. 24, 2017.
Prior Publication US 2021/0108021 A1, Apr. 15, 2021
Int. Cl. C08K 3/22 (2006.01); C08G 18/32 (2006.01); C08G 18/72 (2006.01); C08G 18/79 (2006.01); C08K 3/26 (2006.01); C08K 3/36 (2006.01)

CPC C08G 18/3206 (2013.01) [C08G 18/722 (2013.01); C08G 18/792 (2013.01); C08K 3/22 (2013.01); C08K 3/26 (2013.01); C08K 3/36 (2013.01); C08G 2120/00 (2013.01); C08K 2003/2227 (2013.01); C08K 2003/267 (2013.01)]

12 Claims

1. A polymerizable composition comprising

(i) at least one polyol A1 having an OH-content of at least 25 wt.-%, wherein the at least one polyol A1 is selected from the group consisting of glycerol, propanediol, butanediol, 1,2,10-decanetriol, 1,2,8-octanetriol, 1,2,3-trihydroxybenzene, 1,1,1-trimethylolpropane, 1,1,1-trimethylolethane, penthaerythrol and sugar polyols;

(ii) at least one polyisocyanate A2 comprising at least 60 wt.-% of aliphatic polyisocyanates;

(iii) at least one organic filler B1;

(iv) at least one inorganic filler B2, wherein the inorganic filler B2 is not dried and comprises a water content of at least 0.15 wt.-%; and

(v) expandable microspheres;

wherein the polyol A1 makes up at least 95 wt.-% of all hydroxyl-functional compounds in the polymerizable composition, and

wherein the polymerizable composition is for reaction injection molding.