国家/地区 中国（5） 世界知识产权组织（3） 美国（2）
IPC部 B（7）
IPC大类 B01（7） C02（5）
IPC小类 B01D（7）
IPC B01D063/06（7）
发明人
公开年 2022（2）
申请年
专利权人

Preparing diamines and polyamines containing diphenylmethane structure with low acid consumption comprises e.g. undergoing salt-forming reaction to generate aniline salt, mixing aniline salt and formaldehyde solution for reaction, adding solution to separator, and washing organic phase with alkali.

LI C, CUI C, ZHANG H, LI Y, ZHANG Y, LIN F

Porous polymeric membrane useful for removing impurities from liquid compositions e.g. alcohols and ammonium hydroxide comprises a polymer having mixed in it a carbonaceous material.

MIR A A, JABER J A, PATEL R B, BOUDREAU A, KALYANI V

Preparing hollow fiber braided tube filter membrane used for waste water reduction, by sequentially fixing photothermal conversion functional material and hydrophobic polymer on outer surface of hollow fiber braided tube using traction immersion modification technology and preparing filter membrane.

ZHANG Q, ZHANG X

External pressure type tubular membrane module for waste water treatment, has support layer which is provided with separation layer that is made of multifunctional graphene/high molecular composite material permeable film.

CAO L, GUO J

Treating graphene containing acidic wastewater by filtering acidic wastewater, treating filtrate through reverse osmosis membrane module, adjusting pH of permeate using alkaline solution, treating permeate and deacidifying permeate.

QIU Q

Separating carbon dioxide from air comprises graphene filter adapted to block oxygen and nitrogen molecules, but allow carbon dioxide molecules to pass through.

MCNEIGHT D L

Apparatus for removing water from e.g. animal waste in military and civilian potable graphene oxide water purification and recovery system, has membrane separating lumen from another lumen, where water molecules are passed through membrane.

WOOD J A, SCHWARTZ R, LILLY P J