公开(公告)号：US20240228787A1

公开(公告)日：2024-07-11

申请号：US18285565

申请日：2022-04-07

Applicant: BASF SE

Inventor： Ahmet Uener ,  Achim Fessenbecker

IPC: C09C1/02 ,  C09D7/45 ,  C09D17/00

CPC classification number: C09C1/021 ,  C09D7/45 ,  C09D17/004 ,  C01P2004/51 ,  C01P2006/10 ,  C01P2006/22 ,  C01P2006/60

Abstract: The present invention relates to the use of a polymer containing acid groups as a dispersant for stabilising an aqueous inorganic pigment slurry, wherein the polymer containing acid groups comprises polyether groups of the structural unit (I) *—U—X-(AlkO)n—W (I) where * indicates the bonding site to the polymer containing acid groups. U represents a chemical bond or an alkylene group having 1 to 8 carbon atoms. X is oxygen or an NR1 group, n is an integer with a mean, based on the polymer containing acid groups, in the range from 3 to 300, Alk is C2-C4-alkylene, where Alk may be the same or different within the (Alk-O)n group, W is a hydrogen, C1-C6-alkyl or aryl radical or is the Y—F group where Y is a linear or branched alkylene group which has 2 to 8 carbon atoms and may bear a phenyl ring, F is a nitrogen-bonded 5- to 10-membered nitrogen heterocycle which may have, as ring members, as well as the nitrogen atom and as well as carbon atoms, 1, 2 or 3 additional heteroatoms selected from oxygen, nitrogen and sulphur, where the nitrogen ring members may have an R2 group, and where 1 or 2 carbon ring members may be in the form of carbonyl groups, R1 is hydrogen, C1-C4-alkyl or benzyl, and R2 is hydrogen, C1-C4-alkyl or benzyl, wherein the inorganic pigment slurry is selected from the group consisting of titanium dioxide slurry, calcium hydroxide slurry, ultrafine precipitated calcium carbonate (PCC) slurry and ground calcium carbonate (GCC) slurry. The invention provides pigment slurries having improved viscosity characteristics together with improved stability over time.

公开(公告)号：US20240228348A1

公开(公告)日：2024-07-11

申请号：US18561441

申请日：2022-05-23

Applicant: BASF SE

Inventor： Ahmet Uener ,  Stephan Nied ,  Juergen Detering ,  Achim Fessenbecker

IPC: C02F5/14 ,  C02F103/08

CPC classification number: C02F5/14 ,  C02F2103/08 ,  C02F2209/02 ,  C02F2209/44

Abstract: The invention relates to the use of an aqueous solution of acrylic acid polymer for inhibiting scale formation in a desalination system, wherein the polymer of acrylic acid obtained by a process of polymerising acrylic acid in feed operation with a free radical starter in the presence of hypophosphite in water as solvent, which comprises (i) initially charging water and aqueous hypophosphite solution and optionally acrylic acid in acidic, unneutralised form, optionally one or more ethylenically unsaturated comonomers, and optionally initiator, (ii) adding acrylic acid in acidic, unneutralised form, optionally one or more ethylenically unsaturated comonomers, aqueous free radical starter solution and aqueous hypophosphite solution, (iii) adding a base to the aqueous solution after termination of the acrylic acid feed, wherein the comonomer content does not exceed 30 wt. % based on the total monomer content, wherein the acrylic acid, the aqueous free radical starter solution and the aqueous hypophosphite solution are added such that the molar ratio x of acrylic acid to phosphorus-bound hydrogen [AA]/[P—H] over a time period in which at least 75% of the acrylic acid is converted and has a value x which is constant to within ±0.5 and is in the range from 0.8 to 2, wherein the acrylic acid polymer has a weight average molecular mass Mw of from 1000 to 3000 g/mol, wherein the desalination system comprises at least one of the group consisting of Multi Stage Flash (MSF), at least one Multi Effect Distillation (MED) and Reverse Osmosis (RO). The invention also relates to a process of desalinating saline water in a desalination system.

公开(公告)号：US20130303430A1

公开(公告)日：2013-11-14

申请号：US13890659

申请日：2013-05-09

Applicant: BASF SE

Inventor： Marta REINOSO GARCIA ,  Juergen Tropsch ,  Frederic Bauer ,  Ahmet Uener

IPC: C11D3/20

CPC classification number: C11D3/2068 ,  C07C43/11 ,  C08G65/2606 ,  C08G65/2663 ,  C08G65/2696 ,  C08G2650/58 ,  C08L71/02 ,  C11D1/72 ,  C11D1/722

Abstract: Alkoxylated alcohols and their use in formulations for hard surface cleaning Formulations, comprising at least one compound according to general formula (I) wherein the integers R1 are different or identical and selected from C3-C10-alkyl groups with at least two methyl groups per R1, YH is (AO)n—H, with AO being selected from —CH2CH2O— and CH2CH(R2)O— and being different or identical in the case of n>1 R2 being different or identical and selected from C1-C16-alkyl, branched or linear, n in the range of from 1 to 30, and the polydispersity being in the range of from 1.0 to 1.5.

Abstract translation: 烷氧基化醇及其用于硬表面清洁的制剂中的制剂，其包含至少一种根据通式（I）的化合物，其中整数R 1不同或相同并且选自C 1 -C 10 - 烷基，每个R 1具有至少两个甲基 ，YH是（AO）nH，其中AO选自-CH 2 CH 2 O-和CH 2 CH（R 2）O-，并且在n≥1的情况下，R 2不同或相同，并且选自C 1 -C 16 - 烷基，支链 或线性，n在1至30的范围内，并且多分散性在1.0至1.5的范围内。