公开(公告)号：US20160001266A1

公开(公告)日：2016-01-07

申请号：US14769211

申请日：2014-03-06

Applicant: DAICEL CORPORATION

Inventor： Ryouta KOJIMA ,  Naoyuki FUKUI ,  Hitoshi WATANABE

IPC: B01J21/06 ,  B01J23/745 ,  B01J31/06 ,  B01J35/00 ,  B01J31/26

CPC classification number: B01J21/063 ,  B01D53/8668 ,  B01D2255/20707 ,  B01D2255/20738 ,  B01D2255/802 ,  B01D2257/306 ,  B01D2257/708 ,  B01D2257/90 ,  B01D2257/91 ,  B01D2258/06 ,  B01D2259/4508 ,  B01D2259/4591 ,  B01D2259/804 ,  B01J23/745 ,  B01J31/06 ,  B01J31/26 ,  B01J35/004 ,  B01J35/1014 ,  B01J37/0203 ,  B01J37/0219 ,  C08F220/06 ,  C09D5/16 ,  C09D5/1606 ,  C09D7/40 ,  C09D7/60 ,  C09D201/00

Abstract: Provided is a titanium oxide dispersion liquid that has dispersibility and dispersion stability both at superior levels and, when applied and dried, can form a photocatalyst coating film capable of rapidly developing excellent photocatalytic activity. The titanium oxide dispersion liquid according to the present invention includes titanium oxide particles (A), a dispersing agent (B), and a solvent (C). The titanium oxide particles (A) support a transition metal compound. The dispersing agent (B) includes a poly(acrylic acid) or a salt thereof. The poly(acrylic acid) or a salt thereof in the dispersing agent (B) preferably includes a poly(acrylic acid) alkali metal salt. The poly(acrylic acid) or a salt thereof in the dispersing agent (B) preferably has a weight-average molecular weight of from 1000 to 100000.

Abstract translation: 提供了具有优异水平的分散性和分散稳定性的二氧化钛分散液，并且当施加和干燥时，可以形成能够快速显现出优异的光催化活性的光催化剂涂膜。 根据本发明的氧化钛分散液包括氧化钛颗粒（A），分散剂（B）和溶剂（C）。 氧化钛颗粒（A）支持过渡金属化合物。 分散剂（B）包括聚（丙烯酸）或其盐。 分散剂（B）中的聚（丙烯酸）或其盐优选包含聚（丙烯酸）碱金属盐。 分散剂（B）中的聚（丙烯酸）或其盐的重均分子量优选为1000〜100000。

公开(公告)号：US20230133006A1

公开(公告)日：2023-05-04

申请号：US17915728

申请日：2021-03-29

Applicant: DAICEL CORPORATION

Inventor： Kazuhito TAKEDA ,  Naoyuki FUKUI ,  Miduki DEBA

IPC: C07C51/44 ,  C07C51/42 ,  B01D3/14 ,  B01D71/02 ,  C02F1/44 ,  C02F1/04

Abstract: Provided is a method for producing purified acetic acid from a mixed solution containing acetic acid, an organic solvent, and water in an energy-efficient manner. The method, which is for producing purified acetic acid from a mixed solution containing acetic acid, an organic solvent, and water, includes: a distillation step in which the mixed solution is distilled and separated into a purified liquid rich in acetic acid and a separated liquid rich in an organic solvent; and a membrane separation step in which the water is separated from the purified liquid by a separation membrane. The purified liquid has a water concentration of 4 wt.% or less.

公开(公告)号：US20230123364A1

公开(公告)日：2023-04-20

申请号：US17913973

申请日：2021-03-22

Applicant: DAICEL CORPORATION

Inventor： Yasuhiro KIKUCHI ,  Takahito MITOME ,  Naoyuki FUKUI ,  Kazuhito TAKEDA

IPC: C07C51/47 ,  B01J39/05 ,  B01J39/20

Abstract: Provided is a method for producing purified acetic acid with a good hue. A method for producing purified acetic acid, including treating acetic acid having a poor hue with a synthetic adsorbent to obtain acetic acid with an improved hue. The acetic acid to be treated is, for example, acetic acid having an absorbance of 0.01 or greater at a wavelength of 430 nm. The acetic acid to be treated may be acetic acid recovered from an acetic acid-containing solution that is discharged in a cellulose acetate production process. The synthetic adsorbent may have a cation exchange group on a resin surface. The synthetic adsorbent may have a pore structure.