US 12,426,414 B2
Reactive organosilicon thixotropic agent, organosilicon encapsulation adhesive and LED element
Zuozhu Deng, Beijing (CN); Jing Ma, Beijing (CN); and Huijuan Liu, Beijing (CN)
Assigned to Beijing KMT Technology Co., Ltd., Beijing (CN)
Filed by Beijing KMT Technology Co., Ltd., Beijing (CN)
Filed on Dec. 17, 2021, as Appl. No. 17/554,044.
Claims priority of application No. 202011611398.4 (CN), filed on Dec. 30, 2020.
Prior Publication US 2022/0204827 A1, Jun. 30, 2022
Int. Cl. H10H 20/854 (2025.01); C09J 183/04 (2006.01); H10K 50/84 (2023.01)
CPC H10H 20/854 (2025.01) [C09J 183/04 (2013.01); H10K 50/84 (2023.02)] 10 Claims
 
1. A reactive organosilicon thixotropic agent, characterized in being prepared by a hydrosilylation reaction of cyclic hydrogen-containing polysiloxane as represented by formula (1) or branched hydrogen-containing polysiloxane as represented by formula (2) with unsaturated polyether as represented by formula (3) under the condition that the ratio of the total quantity of SiH bonds in the cyclic hydrogen-containing polysiloxane or the branched hydrogen-containing polysiloxane to the total quantity of olefinic bonds in the unsaturated polyether is greater than 1, wherein
(R1aR1bSiO2/2)n1(R1cHSiO2/2)n2   formula (1)
in formula (1), R1a, R1b and R1c are each independently one of a hydrogen atom, methyl and phenyl, and at least one of R1a, R1b and R1c is phenyl; and n1 is an integer from 0 to 10, and n2 is an integer from 2 to 10;
(R2aR2bR2cSiO1/2)n3(R2dR2eHSiO1/2)n4(R2fR2gSiO2/2)n5(R2hSiO3/2)n6(SiO4/2)n7   formula (2)
in formula (2), R2a, R2b, R2c, R2d, R2e, R2f, R2g and R2h are each independently one of a hydrogen atom, methyl and phenyl, and at least one of R2a, R2b, R2c, R2d, R2e, R2f, R2g and R2h is phenyl; and n3 is an integer from 0 to 10, n4 is an integer from 2 to 10, n5 is an integer from 0 to 10, n6 is an integer from 0 to 10, n7 is an integer from 0 to 10, and n6+n7≥1; and
AO(BO)mH   formula (3)
in formula (3), A is one of ethenyl, propenyl, allyl, acrylyl and methacryloyl, B is independently one of alkylenes from C1 to C10, and m is an integer from 1 to 50.