公开(公告)号：SE7709478A

公开(公告)日：1977-08-23

申请号：SE7709478

申请日：1977-08-23

Applicant: HOECHST AG

Inventor： HOLST A ,  KOSTRZEWA M ,  LASK H

IPC: C08L101/00 ,  A61L15/28 ,  B01J47/12 ,  C08J5/22 ,  C08J7/04 ,  C08J9/28 ,  C08L1/00 ,  C08L1/06 ,  C08L1/08 ,  C08L1/26 ,  C08L67/00 ,  C08L77/00 ,  D01F1/10 ,  D01F2/28 ,  D06M15/09 ,  C08J5/18

CPC classification number: B01D71/10 ,  A61L15/28 ,  B01D69/141 ,  B01J47/12 ,  C08J5/2212 ,  C08J7/047 ,  C08J9/28 ,  C08J2301/02 ,  C08L1/08 ,  D01F2/28 ,  D06M15/09 ,  C08L1/26

公开(公告)号：BR7604982A

公开(公告)日：1977-08-09

申请号：BR7604982

申请日：1976-07-30

Applicant: HOECHST AG

Inventor： HOLST A ,  LASK H ,  GROSSE L

IPC: A61F13/472 ,  A61F13/15 ,  A61F13/49 ,  A61F13/53 ,  A61L15/28 ,  D21H19/34 ,  D06M15/24 ,  D21H1/30

公开(公告)号：ZA7604612B

公开(公告)日：1977-07-27

申请号：ZA7604612

申请日：1976-07-30

Applicant: HOECHST AG

Inventor： UHL K ,  DOERR H ,  NISCHWITZ E ,  LASK H ,  GROSSE L ,  HOLST A

IPC: A61L15/28 ,  D21H19/34 ,  B05D ,  A61F ,  D21H

CPC classification number: D21H19/34 ,  A61L15/28 ,  Y10S604/904 ,  Y10T428/253 ,  Y10T428/2965 ,  C08L1/26

公开(公告)号：ZA762708B

公开(公告)日：1977-04-27

申请号：ZA762708

申请日：1976-05-06

Applicant: HOECHST AG

Inventor： LASK H ,  KOSTRZEWA M ,  HOLST A

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：ZA762704B

公开(公告)日：1977-04-27

申请号：ZA762704

申请日：1976-05-05

Applicant: HOECHST AG

Inventor： HOLST A ,  ALSK H ,  KOSTRZEWA M

IPC: A61F13/472 ,  A61F13/15 ,  A61F13/53 ,  A61L15/28 ,  A61L15/60 ,  B01J20/24 ,  B01J20/281 ,  C08B11/187 ,  C08B11/193 ,  C08B15/00 ,  C08B15/10 ,  G01N30/88 ,  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 modification agent reactive with the still free hydroxyl groups of the cellulose anhydro glucose groups, said modification agent having one of the formulae I II in which R1 is hydroxyl, an acylamino or esterified carbamino group, and R2 is hydrogen or a carboxyl group, THE IMPROVEMENT COMPRISING EFFECTING ALKALIZATION, ETHERIFICATION, AND MODIFICATION IN A LIQUID REACTION MEDIUM OTHER THAN ISOPROPYL ALCOHOL.

公开(公告)号：ZA7602708B

公开(公告)日：1977-04-27

申请号：ZA7602708

申请日：1976-05-06

Applicant: HOECHST AG

Inventor： LASK H ,  KOSTRZEWA M ,  HOLST A

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

CPC classification number: C08B15/10 ,  A61L15/28 ,  C08B15/005 ,  C08L1/26

公开(公告)号：SE7611775L

公开(公告)日：1977-04-25

申请号：SE7611775

申请日：1976-10-22

Applicant: HOECHST AG

Inventor： HOLST A ,  LASK H

IPC: A61F13/472 ,  A61F13/15 ,  A61F13/20 ,  A61F13/49 ,  A61F13/53 ,  A61L15/28 ,  A61L15/60 ,  A61F13/00

Abstract: An absorbent laminate comprising a first layer of absorbent material and at least one layer comprising a tissue having an absorbent carbohydrate derivative on at least one face.

公开(公告)号：SE7611225L

公开(公告)日：1977-04-11

申请号：SE7611225

申请日：1976-10-08

Applicant: HOECHST AG

Inventor： HOLST A ,  LASK H

IPC: A24D3/10 ,  A24D1/06

公开(公告)号：SE7611225A

公开(公告)日：1977-04-11

申请号：SE7611225

申请日：1976-10-08

Applicant: HOECHST AG

Inventor： HOLST A ,  LASK H

IPC: A24D3/10 ,  A24D1/06

CPC classification number: A24D3/10

公开(公告)号：SE7610611L

公开(公告)日：1977-03-28

申请号：SE7610611

申请日：1976-09-24

Applicant: HOECHST AG

Inventor： HOLST A ,  KOSTRZEWA M

IPC: C08B15/00 ,  C08B11/12 ,  C08B15/10

Abstract: This invention relates to an improvement in the process for the manufacture of water-absorbing, but largely water-insoluble cellulose ethers, wherein cellulose is etherified with a halogen fatty acid in an alkaline medium to which organic solvents may be added, to such an extent that without a further reaction a water-soluble cellulose ether would be produced, and wherein, prior to, during, or after etherification, a further reaction is carried out with a cross-linking agent which is polyfunctional towards cellulose in an alkaline reaction medium, the improvement comprising that chips of regenerated cellulose film are used as cellulose.