US 11,981,827 B2
Waterborne polyurethane dispersion and method for preparing the same
Xiaolian Hu, Shanghai (CN); Chao Zhang, Shanghai (CN); Xiangyang Tai, Shanghai (CN); Yanli Feng, Shanghai (CN); Biao Ma, Shanghai (CN); and Ling Ling, Shanghai (CN)
Assigned to DOW GLOBAL TECHNOLOGIES LLC, Midland, MI (US)
Appl. No. 17/435,593
Filed by Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Aug. 14, 2019, PCT No. PCT/CN2019/100552
§ 371(c)(1), (2) Date Sep. 1, 2021,
PCT Pub. No. WO2020/177276, PCT Pub. Date Sep. 10, 2020.
Claims priority of application No. PCT/CN2019/076936 (WO), filed on Mar. 5, 2019.
Prior Publication US 2022/0154038 A1, May 19, 2022
Int. Cl. C09D 175/08 (2006.01); B32B 5/02 (2006.01); B32B 5/18 (2006.01); B32B 5/24 (2006.01); B32B 27/08 (2006.01); B32B 27/12 (2006.01); B32B 27/40 (2006.01); C08G 18/08 (2006.01); C08G 18/12 (2006.01); C08G 18/22 (2006.01); C08G 18/24 (2006.01); C08G 18/28 (2006.01); C08G 18/40 (2006.01); C08G 18/42 (2006.01); C08G 18/48 (2006.01); C08G 18/75 (2006.01); C08J 5/18 (2006.01); C09D 175/12 (2006.01); D06N 3/00 (2006.01); D06N 3/14 (2006.01); D06N 3/18 (2006.01); B32B 27/20 (2006.01)
CPC C09D 175/08 (2013.01) [B32B 5/02 (2013.01); B32B 5/022 (2013.01); B32B 5/024 (2013.01); B32B 5/026 (2013.01); B32B 5/18 (2013.01); B32B 5/245 (2013.01); B32B 27/08 (2013.01); B32B 27/12 (2013.01); B32B 27/40 (2013.01); C08G 18/0866 (2013.01); C08G 18/12 (2013.01); C08G 18/227 (2013.01); C08G 18/24 (2013.01); C08G 18/283 (2013.01); C08G 18/4018 (2013.01); C08G 18/4288 (2013.01); C08G 18/4804 (2013.01); C08G 18/4812 (2013.01); C08G 18/4825 (2013.01); C08G 18/4829 (2013.01); C08G 18/755 (2013.01); C08J 5/18 (2013.01); C09D 175/12 (2013.01); D06N 3/005 (2013.01); D06N 3/0095 (2013.01); D06N 3/14 (2013.01); D06N 3/145 (2013.01); D06N 3/183 (2013.01); B32B 27/20 (2013.01); B32B 2262/0223 (2013.01); B32B 2262/0238 (2013.01); B32B 2262/0246 (2013.01); B32B 2262/0253 (2013.01); B32B 2262/0261 (2013.01); B32B 2262/0276 (2013.01); B32B 2262/065 (2013.01); B32B 2262/10 (2013.01); B32B 2262/101 (2013.01); B32B 2266/0278 (2013.01); B32B 2307/732 (2013.01); B32B 2437/00 (2013.01); B32B 2437/02 (2013.01); B32B 2601/00 (2013.01); C08J 2375/12 (2013.01); D06N 2209/10 (2013.01); D06N 2211/10 (2013.01); D06N 2211/106 (2013.01); D06N 2211/14 (2013.01); D06N 2211/28 (2013.01); Y10T 428/24438 (2015.01)] 13 Claims
OG exemplary drawing
 
1. A waterborne polyurethane dispersion comprising polyurethane particles dispersed in water, wherein the waterborne polyurethane dispersion is derived from the reaction of:
(A) an isocyanate component comprising one or more compounds having at least two isocyanate groups;
(B) an isocyanate-reactive component comprising one or more compounds having at least two isocyanate-reactive groups, wherein the isocyanate-reactive component comprises polyether polyols having a hydroxyl functionality of 3.0 and a weight average molecular weight of 1,500 to 12,000 g/mol;
(C) a hydrophilic amino siloxane compound represented by Formula I:

OG Complex Work Unit Chemistry
wherein each R independently represents methyl, ethyl, n-propyl, i-propyl, n-butyl, butyl, sec-butyl, t-butyl, n-pentyl, i-pentyl, tert-pentyl, neo-pentyl, cyclohexyl, phenyl, vinyl, allyl or —(OCH2CH2)a—O—CH2—CH═CH2;
R1 is —(CH2)mNH2 or —(CH2)s—NH—(CH2)tNH2;
R2 is —CH2CH2CH2O(CH2CH2O)nH; and
each of R3, R4, R5, R6 and R7 is independently selected from the group consisting of methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, sec-butyl, t-butyl, n-pentyl, i-pentyl, tert-pentyl, neo-pentyl, cyclohexyl and phenyl;
wherein a is an integer of 1 to 10; x is an integer of 20-500; y is an integer of 1-10; z is an integer of 1-10; m is an integer of 1-5; s is an integer of 1, 2, 3, 4 or 5; t is an integer of 1, 2, 3, 4 or 5; and n is an integer of 5-20; and wherein the content of the hydrophilic amino siloxane compound (C) is from 2.0 wt % to 10 wt %, based on the total weight of the isocyanate component (A), the isocyanate-reactive component (B), and the catalyst (D);
(D) a catalyst;
(E) a surfactant;
(F) a chain extender; and
(G) water.