US 12,428,519 B2
Silicate modified polymer foam material for filling and sealing
Peng Zhao, Henan (CN); Hongyuan Fang, Henan (CN); Lei Wang, Henan (CN); Chengchao Guo, Henan (CN); Mingrui Du, Henan (CN); Chao Zhang, Henan (CN); and Guobin Qiao, Henan (CN)
Assigned to SAFEKEY Engineering Technology (Zhengzhou), Ltd., Henan (CN)
Filed by WELEAD Infrastructure Engineering Technology (Zhengzhou), Ltd., Henan (CN); and SAFEKEY Engineering Technology (Zhengzhou), Ltd., Henan (CN)
Filed on Sep. 15, 2022, as Appl. No. 17/945,440.
Claims priority of application No. 202210108735.0 (CN), filed on Jan. 28, 2022.
Prior Publication US 2023/0043883 A1, Feb. 9, 2023
Int. Cl. C08G 18/76 (2006.01); C08G 18/38 (2006.01); C08G 18/83 (2006.01); C08J 9/12 (2006.01)
CPC C08G 18/7614 (2013.01) [C08G 18/388 (2013.01); C08G 18/837 (2013.01); C08J 9/125 (2013.01); C08J 2203/10 (2013.01); C08J 2375/04 (2013.01)] 2 Claims
 
1. A method of preparing a silicate modified polymer foam material for filling and sealing, wherein the silicate modified polymer foam material is obtained by mixing prepolymerized isocyanate and a silicate modified aqueous solution;
the prepolymerized isocyanate is prepared by a method comprising steps of:
(A) preparing 2-carboxyethylphenyl ethylene glycol hypophosphite by performing an esterification reaction on 2-carboxyethylphenyl hypophosphorous acid and ethylene glycol with a molar ratio of 1:1, wherein a reaction equation of the esterification reaction is

OG Complex Work Unit Chemistry
(B) obtaining a phosphorus-containing diol intermediate by performing an addition reaction on the 2-carboxyethylphenyl ethylene glycol hypophosphite and propylene oxide with a molar ratio of 1:1, wherein a reaction equation of the addition reaction is

OG Complex Work Unit Chemistry
 and
(C) performing a polymerization reaction on the phosphorus-containing diol intermediate and toluene diisocyanate (TDI) to obtain a difunctional modified flame retardant isocyanate compound which is the prepolymerized isocyanate, wherein a reaction equation of the polymerization reaction is

OG Complex Work Unit Chemistry