公开(公告)号：NO763135A

公开(公告)日：1977-03-16

申请号：NO763135

申请日：1976-09-13

Applicant: HOECHST AG

Inventor： HOLST A ,  KOSTRZEWA M

IPC: C08B15/10 ,  C08F8/02 ,  C08G61/04 ,  C08G

CPC classification number: C08G61/04 ,  C08F8/02 ,  C08F18/24

公开(公告)号：SE7608631A

公开(公告)日：1977-02-02

申请号：SE7608631

申请日：1976-07-30

Applicant: HOECHST AG

Inventor： HOLST A ,  LASK H ,  GROSSE L ,  DORR H-W ,  NISEHWETZ E ,  UHL K

IPC: A61F13/472 ,  A61F13/15 ,  A61F13/49 ,  A61F13/53 ,  A61L15/28 ,  D21H19/34 ,  D21H1/34

CPC classification number: D21H19/34 ,  A61L15/28 ,  C08L1/26

公开(公告)号：SE7605140L

公开(公告)日：1976-11-08

申请号：SE7605140

申请日：1976-05-05

Applicant: HOECHST AG

Inventor： HOLST A ,  LASK H ,  KONSTRZEWA M

IPC: A61F13/472 ,  A61F13/15 ,  A61F13/53 ,  A61L15/28 ,  A61L15/60 ,  C08B11/187 ,  C08B15/00 ,  C08B15/10 ,  C08B11/00

Abstract: This invention relates to an improvement in the process for the production of water-adsorbing, but at least partially water-insoluble, cellulose ethers in which cellulose is alkalized in a liquid reaction medium and etherified in a manner such that by etherification only an at least largely water-soluble carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose or methyl hydroxyethyl cellulose is produced, and in which the cellulose is reacted in an alkaline reaction medium before, during, or after the etherification with a cross-linking agent which is polyfunctional towards cellulose and selected from the group consisting of acrylamido methylene chloroacetamide, dichloroacetic acid, phosphorous oxychloride, or a compound in which at least two groups functional towards cellulose are the acrylamido group the chloroazomethine group the allyloxy azomethine group the improvement comprising effecting alkalization, etherification, and cross-linking in a liquid reaction medium other than isopropyl alcohol.

公开(公告)号：DK203376A

公开(公告)日：1976-11-08

申请号：DK203376

申请日：1976-05-06

Applicant: HOECHST AG

Inventor： HOLST A ,  LASK H ,  KOSTRZEWA M

IPC: A61F13/472 ,  A61F13/15 ,  A61F13/53 ,  A61L15/28 ,  A61L15/60 ,  C08B11/187 ,  C08B15/00 ,  C08B15/10 ,  C08B

Abstract: This invention relates to an improvement in the process for the production of water-adsorbing, but at least partially water-insoluble, cellulose ethers in which cellulose is alkalized in a liquid reaction medium and etherified in a manner such that by etherification only an at least largely water-soluble carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose or methyl hydroxyethyl cellulose is produced, and in which the cellulose is reacted in an alkaline reaction medium before, during, or after the etherification with a cross-linking agent which is polyfunctional towards cellulose and selected from the group consisting of acrylamido methylene chloroacetamide, dichloroacetic acid, phosphorous oxychloride, or a compound in which at least two groups functional towards cellulose are the acrylamido group the chloroazomethine group the allyloxy azomethine group the improvement comprising effecting alkalization, etherification, and cross-linking in a liquid reaction medium other than isopropyl alcohol.

公开(公告)号：BR7409779A

公开(公告)日：1976-05-25

申请号：BR977974

申请日：1974-11-21

Applicant: HOECHST AG

Inventor： HOLST A ,  LASK H

IPC: C08B11/187 ,  A61L15/28 ,  C08B11/14 ,  C08B11/193 ,  C08B15/10 ,  C08B11/08 ,  C08B11/12

Abstract: This invention relates to an improvement in the process for the production of water-adsorbing, but largely water-insoluble, cellulose ethers, in which cellulose is alkalized in the presence of alkali and isopropanol as a reaction medium and is so reacted with an etherification agent that by etherification only a water-soluble cellulose ether is produced, and in which process a modification agent which is able to react with the still free hydroxyl groups of the cellulose anhydro glucose groups in an alkaline reaction medium is reacted before, during, or after the etherification, the improvement comprising effecting the etherification of cellulose to carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose, or methylhydroxyethyl cellulose, reacting with the modification agent in the presence of 0.8 to 7.5 parts by weight of isopropanol, based upon the cellulose weight, and employing a modification agent being one of the formulae HOHH H ¦ PARALLEL ¦¦ ¦ (I) H2C=C-C-N-C-R1 and (II) H2C=C-SO2-NH2, ¦ R2 R1 in formula I being hydroxyl, or an acylamino or etherified carbamino group, and R2 in formula I being hydrogen or a carboxyl group.

公开(公告)号：BR7409528A

公开(公告)日：1976-05-25

申请号：BR952874

申请日：1974-11-13

Applicant: HOECHST AG

Inventor： LASK H ,  HOLST A ,  KOSTRZEWA M

IPC: C08B11/187 ,  A61L15/28 ,  C08B11/00 ,  C08B15/10 ,  C08B11/08 ,  C08B11/12

Abstract: This invention relates to an improvement in the process for the production of water-adsorbing, but largely water-insoluble, cellulose ethers, in which cellulose is alkalized in the presence of alkali hydroxide and isopropanol as a reaction medium and is so reacted with an etherification agent that by etherification only a water-soluble cellulose ether is produced, and in which process the cellulose is reacted with a cross-linking agent which is polyfunctional towards cellulose in an alkaline reaction medium before, during, or after the etherification of the cellulose, the improvement comprising effecting the etherification of cellulose to carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose, or methylhydroxyethyl cellulose, reacting the cellulose with the polyfunctional cross-linking agent in the presence of 0.8 to 7.5 parts by weight of isopropanol, based upon the cellulose weight, and employing as the cross-linking agent acrylamido methylene chloroacetamide, dichloroacetic acid or phosphorus oxychloride or a compound in which at least two groups functional towards cellulose are THE ACRYLIC AMINO GROUP CH2=CH-C-N- PARALLEL ¦ O the chlorine azomethine group -N=C- ¦ Cl OR THE ALLYLOXY AZOMETHINE GROUP -N=C-O-CH2-CH=CH2 . ¦

公开(公告)号：DK129875A

公开(公告)日：1975-09-29

申请号：DK129875

申请日：1975-03-26

Applicant: HOECHST AG

Inventor： HOLST A ,  KOSTRZEWA M ,  LASK H

IPC: A24D3/10 ,  A24D

公开(公告)号：FI329274A

公开(公告)日：1975-05-16

申请号：FI329274

申请日：1974-11-13

Applicant: HOECHST AG

Inventor： HOLST A ,  KOSTRZAWA M ,  LASK H

IPC: C08B11/187 ,  A61L15/28 ,  C08B11/00 ,  C08B15/10 ,  C08B

Abstract: This invention relates to an improvement in the process for the production of water-adsorbing, but largely water-insoluble, cellulose ethers, in which cellulose is alkalized in the presence of alkali hydroxide and isopropanol as a reaction medium and is so reacted with an etherification agent that by etherification only a water-soluble cellulose ether is produced, and in which process the cellulose is reacted with a cross-linking agent which is polyfunctional towards cellulose in an alkaline reaction medium before, during, or after the etherification of the cellulose, the improvement comprising effecting the etherification of cellulose to carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose, or methylhydroxyethyl cellulose, reacting the cellulose with the polyfunctional cross-linking agent in the presence of 0.8 to 7.5 parts by weight of isopropanol, based upon the cellulose weight, and employing as the cross-linking agent acrylamido methylene chloroacetamide, dichloroacetic acid or phosphorus oxychloride or a compound in which at least two groups functional towards cellulose are THE ACRYLIC AMINO GROUP CH2=CH-C-N- PARALLEL ¦ O the chlorine azomethine group -N=C- ¦ Cl OR THE ALLYLOXY AZOMETHINE GROUP -N=C-O-CH2-CH=CH2 . ¦

公开(公告)号：SE433613B

公开(公告)日：1984-06-04

申请号：SE7414057

申请日：1974-11-08

Applicant: HOECHST AG

Inventor： HOLST A ,  KOSTRZEWA M ,  LASK H

IPC: A61L15/28 ,  C08B11/187 ,  C08B11/00 ,  C08B15/10

Abstract: This invention relates to an improvement in the process for the production of water-adsorbing, but largely water-insoluble, cellulose ethers, in which cellulose is alkalized in the presence of alkali hydroxide and isopropanol as a reaction medium and is so reacted with an etherification agent that by etherification only a water-soluble cellulose ether is produced, and in which process the cellulose is reacted with a cross-linking agent which is polyfunctional towards cellulose in an alkaline reaction medium before, during, or after the etherification of the cellulose, the improvement comprising effecting the etherification of cellulose to carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose, or methylhydroxyethyl cellulose, reacting the cellulose with the polyfunctional cross-linking agent in the presence of 0.8 to 7.5 parts by weight of isopropanol, based upon the cellulose weight, and employing as the cross-linking agent acrylamido methylene chloroacetamide, dichloroacetic acid or phosphorus oxychloride or a compound in which at least two groups functional towards cellulose are THE ACRYLIC AMINO GROUP CH2=CH-C-N- PARALLEL ¦ O the chlorine azomethine group -N=C- ¦ Cl OR THE ALLYLOXY AZOMETHINE GROUP -N=C-O-CH2-CH=CH2 . ¦

公开(公告)号：YU305877A

公开(公告)日：1982-08-31

申请号：YU305877

申请日：1977-12-22

Applicant: HOECHST AG

Inventor： BUSCH W ,  HOLST A ,  FISCHER W

IPC: C08G18/00 ,  C08J9/28 ,  C08L1/26 ,  C08L3/04 ,  C08L75/00 ,  C08L75/04 ,  D06N3/00 ,  D06N3/14