	US 11,795,343 B2
	Process for preparing urea urethane polymer
Huiguang Kou, Ludwigshafen (DE); Ulrich Tritschler, Ludwigshafen (DE); Wolfgang Peter, Ludwigshafen (DE); and Clemens Auschra, Ludwigshafen (DE)
Assigned to BASF SE
Appl. No. 16/762,745
Filed by BASF SE, Ludwigshafen am Rhein (DE)
PCT Filed Nov. 5, 2018, PCT No. PCT/EP2018/080189 § 371(c)(1), (2) Date May 8, 2020, PCT Pub. No. WO2019/096611, PCT Pub. Date May 23, 2019.
Claims priority of application No. 17201501 (EP), filed on Nov. 14, 2017.
Prior Publication US 2021/0171797 A1, Jun. 10, 2021
Int. Cl. C09D 175/12 (2006.01); C09D 7/43 (2018.01); C08G 18/10 (2006.01); C08G 18/22 (2006.01); C08G 18/28 (2006.01); C08G 18/32 (2006.01); C08G 18/76 (2006.01); C08G 18/80 (2006.01); C09D 5/02 (2006.01); C09D 5/04 (2006.01); C09D 175/04 (2006.01)

CPC C09D 175/12 (2013.01) [C08G 18/10 (2013.01); C08G 18/225 (2013.01); C08G 18/282 (2013.01); C08G 18/283 (2013.01); C08G 18/2835 (2013.01); C08G 18/324 (2013.01); C08G 18/3228 (2013.01); C08G 18/3234 (2013.01); C08G 18/7621 (2013.01); C08G 18/8038 (2013.01); C09D 5/024 (2013.01); C09D 5/04 (2013.01); C09D 7/43 (2018.01); C09D 175/04 (2013.01)]

22 Claims

1. A process for preparing a urea urethane, the process comprising:

i) introducing toluene diisocyanate into a reactor;

ii) adding at least one monohydroxyl compound of formula (I)

R—OH (I),

wherein R is linear or branched alkyl comprising 4 to 22 carbon atoms, linear or branched alkenyl comprising 4 to 22 carbon atoms, cycloalkyl comprising 6 to 12 carbon atoms, aralkyl comprising 7 to 12 carbon atoms, a radical of formula C_mH_2m+1(O—C_nH_2n)_x—, a radical of formula C_mH_2m+1[O—C(═O)—C_vH_2v]_x—, or a radical of formula C_mH_2m+1(O—C_nH_2n)_x−1[O—C(═O)—C_vH_2v]_x—, wherein m is an integer from 1 to 22, n is an integer from 2 to 4, x is an integer from 1 to 15 and v is an integer from 4 to 6,

to obtain at least one monoisocyanate adduct;

whereby a molar ratio of the at least one monohydroxyl compound of formula (I) to the toluene diisocyanate is in a range of ≥1.05:1.0 to ≤1.2:1.0;

iii) preparing a pre-mix by mixing at least one diamine, at least one polar aprotic solvent, and at least one lithium salt; and

iv) feeding the pre-mix obtained in iii) into the reactor to react with the at least one monoisocyanate adduct obtained in ii), to obtain the urea urethane.