US 12,404,356 B2
Method for composite delamination
Kam Piu Ho, Hong Kong (CN); Yingkai Jiang, Shenzhen (CN); and Yangjian Dong, Mianyang (CN)
Assigned to GRST SINGAPORE PTE. LTD., Singapore (SG)
Appl. No. 17/912,038
Filed by GRST SINGAPORE PTE. LTD., Singapore (SG)
PCT Filed Dec. 25, 2020, PCT No. PCT/CN2020/139555
§ 371(c)(1), (2) Date Sep. 16, 2022,
PCT Pub. No. WO2021/253787, PCT Pub. Date Dec. 23, 2021.
Claims priority of application No. PCT/CN2020/096672 (WO), filed on Jun. 17, 2020; application No. PCT/CN2020/110065 (WO), filed on Aug. 19, 2020; application No. PCT/CN2020/110105 (WO), filed on Aug. 19, 2020; application No. PCT/CN2020/117615 (WO), filed on Sep. 25, 2020; application No. PCT/CN2020/117738 (WO), filed on Sep. 25, 2020; application No. PCT/CN2020/117767 (WO), filed on Sep. 25, 2020; application No. PCT/CN2020/117789 (WO), filed on Sep. 25, 2020; and application No. PCT/CN2020/129129 (WO), filed on Nov. 16, 2020.
Prior Publication US 2023/0138359 A1, May 4, 2023
Int. Cl. C08F 22/02 (2006.01); C08F 6/12 (2006.01); C08F 22/30 (2006.01)
CPC C08F 22/02 (2013.01) [C08F 6/12 (2013.01); C08F 22/30 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method for delaminating a composite by immersing the composite into a delamination solution; wherein the composite comprises a substrate and a coating applied on one side or both sides of the substrate comprising a polymeric binder; wherein the polymeric binder comprises a copolymer comprising a structural unit derived from an acid group-containing monomer; and wherein the proportion of structural unit derived from an acid group-containing monomer is from about 15% to about 85% by mole, based on the total number moles of monomeric units in the copolymer in the polymeric binder.