US 11,746,193 B2
Block-modified polysiloxanes and compositions formed thereof
Heng Yang, Shanghai (CN); Shuai Tian, Shanghai (CN); and Zhongliang Sun, Shanghai (CN)
Assigned to WACKER CHEMIE AG, Munich (DE)
Appl. No. 17/292,168
Filed by WACKER CHEMIE AG, Munich (DE)
PCT Filed Nov. 20, 2018, PCT No. PCT/CN2018/116374
§ 371(c)(1), (2) Date May 7, 2021,
PCT Pub. No. WO2020/102966, PCT Pub. Date May 28, 2020.
Prior Publication US 2021/0388163 A1, Dec. 16, 2021
Int. Cl. C08G 77/452 (2006.01); C08G 77/46 (2006.01); C08L 83/08 (2006.01); D06M 15/643 (2006.01); C08G 77/44 (2006.01); C08L 83/12 (2006.01); D06M 101/32 (2006.01); C08G 77/26 (2006.01)
CPC C08G 77/452 (2013.01) [C08G 77/44 (2013.01); C08G 77/46 (2013.01); C08L 83/08 (2013.01); C08L 83/12 (2013.01); D06M 15/6436 (2013.01); C08G 77/26 (2013.01); D06M 2101/32 (2013.01); D06M 2200/50 (2013.01)] 20 Claims
 
1. A block-modified polysiloxane, which is a linear or cyclic polysiloxane copolymer and comprises repeating structural units having the following structural formula (1):

OG Complex Work Unit Chemistry
where X is a divalent hydrocarbon radical having at least 3 carbon atoms, which contains at least one hydroxyl group and is interrupted by an oxygen atom, and the X groups in the repeating units are the same or different;
M is a divalent hydrocarbon radical of the formula CaH2a, where a is a positive integer between 1 and 10, and the M groups in the repeating units are the same or different;
N is a nitrogen atom;
m is a positive integer between 10 and 200;
n is a positive integer, between 50 and 350;
Me denotes methyl;
R1, R2, R3 and R4 are the same or different, and are each independently an alkyl group having from 1 to 4 carbon atoms or a benzyl group or H;
R5 and R6 are the same or different, and are each independently H, or an alkyl group having from 1 to 20 carbon atoms, which are optionally substituted by oxygen atoms;
A− is an inorganic or organic anion.