WO1997031950B1 - Carboxymethyl cellulose ethers having, as substituents, long chain groups - Google Patents
Carboxymethyl cellulose ethers having, as substituents, long chain groupsInfo
- Publication number
- WO1997031950B1 WO1997031950B1 PCT/EP1997/000949 EP9700949W WO9731950B1 WO 1997031950 B1 WO1997031950 B1 WO 1997031950B1 EP 9700949 W EP9700949 W EP 9700949W WO 9731950 B1 WO9731950 B1 WO 9731950B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- alkyl
- carboxymethyl cellulose
- branched
- linear
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Abstract
Carboxymethyl cellulose ethers having, as substituents, groups having the formula (I): R-(A)m-(B)n-, wherein: R = linear or branched C1-C30 alkyl or alkenyl group, A = O-CpH2p oxyalkylene group, linear or branched with p = 2-4, B = -CH(OH)-CH2- only when m = 0, or B = -O-CH2-CH(OH)-CH2-, m = 0-20, n = 0-1 and having a degree of substitution (alkyl D.S.) ranging from 0.01?.10-2 to 2.10-1¿, suitable to the use as thickening additives for aqueous compositions, particularly for paints, plasters and cosmetics.
Claims
1. Carboxymethyl cellulose ethers having, as substituents, groups having general formula (I)
R-(A)m-(B)n- (I) wherein :
R = linear or branched C1-C30 alkyl or alkenyl group. A = linear or branched O-C H2 oxyalkylene group with p = 2-4, B = 0- CH2-CH(OH)-CH2 or B = CH(OH)-CH2 only when m = 0, m= 0-20, n = 0-1 and having a degree of substitution (alkyl D.S.) ranging from 0.01-lC"
2 to 2-10-1 , wherein the alkyl D.S. is intended as the average number of hydroxyls substituted by long chain on each anhydroglucosidic unit, provided that when m = O and B = CH(0H)CH2 or when and n are both =
0, R is --C30 alkyl.
2. Process for the preparation of carboxymethyl cellulose ethers as defined in claim 1, characterized in that the carboxymethyl cellulose is directly reacted with an agent having the general formula (II)
<A>mX (ID 5 wherein m = 0-20
O O
/I /t
X = Cl, Br, OS02R , OCH2CHCH2, or X = CHCH2 only when m = 0, wherein
R = C1-C3 alkyl group, C6-C12 aryl group or Cl arylalkyl group, R = Q linear or branched C.-C,., alkyl or alkenyl group,
A = linear or branched O-C H-, oxyalkylene group with p = 2-4,
P ^ o
/I provided that when m = O and X = CHCH2 , R is C5-C30 alkyl, in a medium consisting of water and an organic solvent in presence of a base and optionally in presence of a phase transfer catalyst and a 5 nitrogen atmosphere .
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI96A000375 | 1996-02-28 | ||
| IT96MI000375A IT1282703B1 (en) | 1996-02-28 | 1996-02-28 | CARBOXYMETHYL CELLULOSE ETHERS HAVING LONG-CHAIN GROUPS AS SUBSTITUTES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1997031950A1 WO1997031950A1 (en) | 1997-09-04 |
| WO1997031950B1 true WO1997031950B1 (en) | 1998-02-19 |
Family
ID=11373424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1997/000949 Ceased WO1997031950A1 (en) | 1996-02-28 | 1997-02-27 | Carboxymethyl cellulose ethers having, as substituents, long chain groups |
Country Status (2)
| Country | Link |
|---|---|
| IT (1) | IT1282703B1 (en) |
| WO (1) | WO1997031950A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6384011B1 (en) | 1997-09-15 | 2002-05-07 | The Procter & Gamble Company | Laundry detergent compositions with cellulosic based polymers to provide appearance and integrity benefits to fabrics laundered therewith |
| BR9812645A (en) * | 1997-09-15 | 2001-12-18 | Procter & Gamble | Compositions of laundry detergents based on cellulose to provide advantages in appearance and integrity to fabrics washed with them |
| SE514347C2 (en) * | 1998-08-06 | 2001-02-12 | Akzo Nobel Nv | Non-ionic cellulose ether and its use as a thickener in paint compositions |
| US6669863B1 (en) | 1998-12-11 | 2003-12-30 | Akzo Nobel N.V. | Anionic cellulose ethers having temperature-dependent associative properties |
| BR9916133A (en) * | 1998-12-11 | 2001-09-11 | Akzo Nobel Nv | anionic cellulose ether, and use of the same |
| US7517534B2 (en) | 2001-03-16 | 2009-04-14 | Kao Corporation | Oil-in-water emulsions and process for producing the same |
| JP4290599B2 (en) | 2004-04-27 | 2009-07-08 | 花王株式会社 | Oil-in-water emulsion and process for producing the same |
| FR2952375A1 (en) * | 2009-11-10 | 2011-05-13 | Adocia | POLYSACCHARIDES COMPRISING CARBOXYL FUNCTIONAL GROUPS SUBSTITUTED BY ESTERIFICATION BY A HYDROPHOBIC ALCOHOL DERIVATIVE |
| CN114621736B (en) * | 2021-12-08 | 2024-03-19 | 中国石油天然气集团有限公司 | Environment-friendly drilling fluid plugging agent, drilling fluid and preparation method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD140049A1 (en) * | 1978-11-28 | 1980-02-06 | Fritz Loth | PROCESS FOR THE PREPARATION OF CELLULOSE MIXTURES |
| DE3478445D1 (en) * | 1983-10-06 | 1989-07-06 | Kohjin Co | Process for preparing carboxymethyl ethyl cellulose suitable for enteric coating |
-
1996
- 1996-02-28 IT IT96MI000375A patent/IT1282703B1/en active IP Right Grant
-
1997
- 1997-02-27 WO PCT/EP1997/000949 patent/WO1997031950A1/en not_active Ceased
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