IP Library Granted Patent US 11,718,712
Granted Patent B2
US 11,718,712 · App. 16/756,652 · Granted Aug 8, 2023

Composition for interfacial polymerization of polyamide and manufacturing method for water treatment separation membrane using same

Inventors: Eunkyoung Byun (Daejeon, KR); Youngju Lee (Daejeon, KR); Lakwon Choi (Daejeon, KR); Chong Kyu Shin (Daejeon, KR)
Assignee: LG CHEM, LTD.
C08G69/04B01D61/025B01D67/0006B01D69/10B01D71/56C02F1/441C09D177/10B01D2323/36C02F2305/04
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Quick Facts
Patent No.
US 11,718,712
App. No.
16/756,652
Granted
Aug 8, 2023
Kind
B2
Abstract

Provided is a composition for interfacial polymerizing polyamide including an amine compound; and one or more types of compounds selected from among a purine-based compound and a pyrimidine-based compound of Chemical Formula 1: wherein, in Chemical Formula 1: X is N or NH; Y is O or OH; Z is O, OH or NH 2 ; R1 and R2 are each hydrogen or a substituted or unsubstituted alkyl group; and is a single bond or a double bond, and a method for manufacturing a water-treatment membrane and a water-treatment membrane using the same.

Claims (11)

1. A composition for interfacial polymerizing polyamide comprising:

an amine compound; and

one or more types of compounds selected from among a purine-based compound and a pyrimidine-based compound,

wherein the purine-based compound is one or more selected from among purine, adenine, guanine, hypoxanthine, xanthine, theobromine, caffeine, uric acid and isoguanine,

wherein the pyrimidine-based compound is one or more selected from among uracil, cytosine and thymine,

wherein the purine-based compound is present in an amount from 0.001 wt % to 1 wt % based on 100 wt % of the composition,

wherein the pyrimidine-based compound is present in an amount from 0.001 wt % to 1 wt % based on 100 wt % of the composition; and

wherein, when the composition is contacted with an organic solution containing an acyl halide, an interfacial polymerization forms a polyamide active layer.

2. The composition of claim 1 comprising the purine-based compound and the pyrimidine-based compound, wherein a total amount of the purine-based compound and the pyrimidine-based compound is from 0.01 wt % to 0.2 wt % based on 100 wt % of the composition.

3. The composition of claim 1 , wherein the amine compound is present in an amount from 0.1 wt % to 20 wt % based on 100 wt % of the composition.

4. The composition claim 1 , further comprising a surfactant, wherein the surfactant is present in an amount from 0.01 wt % to 1 wt % based on 100 wt % of the composition.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 24, 2025
From: LG CHEM, LTD.
To: NANOH2O CO., LTD.
Reel/Frame 073784/0326 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 29, 2020
From: BYUN, EUNKYOUNG; LEE, YOUNGJU; CHOI, LAKWON; SHIN, CHONG KYU
To: LG CHEM, LTD.
Reel/Frame 052530/0461 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 16, 2020
From: BYUN, EUNKYOUNG; LEE, YOUNGJU; CHOI, LAKWON; SHIN, CHONG KYU
To: LG CHEM, LTD.
Reel/Frame 052418/0753 →
Priority Claims (3)
KR 10-2018-0070933 · Jun 20, 2018 · national
KR 10-2018-0070938 · Jun 20, 2018 · national
KR 10-2018-0070940 · Jun 20, 2018 · national
Continuity (1)
Related Publication 20200332059A1 · Oct 22, 2020