B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
117/88.5
B32B 27/08 (2006.01) B01D 69/12 (2006.01) B01D 71/62 (2006.01) B32B 7/00 (2006.01) C08G 73/06 (2006.01) C08L 79/04 (2006.01)
Patent
CA 1180235
ABSTRACT OF THE DISCLOSURE A composite semipermeable membrane which comprises a porous substrate and an ultrathin dense layer having solute removal performance formed on said substrate by polymerization by crosslinking of a reactive material com- posed of at least one material selected from the group consisting of (a) a mixture of triazine represented by the general formula: Image (wherein R1, R2, R3, R4 and R5 each represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms), and polyamine monomer, (b) said triazine modified with amine, (c) a mixture of said triazine modified with amine, and polyamine monomer, (d) an oligomer composed of said triazine and poly- amine monomer, and (e) a mixture of an oligomar composed of said triazine and polyamine monomer, and polyamine monomer, as a main component, with a polyfunctional crosslinking reagent having two or more functional groups capable of reacting with amino groups in the molecule, and a process for preparing the same.
399205
Kamiyama Yoshiyasu
Nakagome Keisuke
Nitto Electric Industrial Co. Ltd.
Riches Mckenzie & Herbert Llp
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