Process for preparing hydrophilic copolymerization and product obtained thereby

Claim 1

A METHOD OF THE MANUFACTURE OF HIGH MOLECULAR WEIGHT HYDROPHILIC COPOLYMERIZATES IN THE FORM OF GEL GRAINS WHICH COMPRISES: (A) PROVIDING A FIRST LIQUID SOLUTION OF A HYDROXYL GROUP-CONTAINING UNCHARGED POLYMER SUBSTANCE, SAID FIRST LIQUID SOLUTION CONTAINING WATER AS THE MAIN LIQUID COMPONENT, AND SAID POLYMER SUBSTANCE BEING SELECTED FROM THE GROUP CONSISTING OF DEXTRAN, STARCH, DEXTRIN, CELLULOSE, POLYGLUCOSE, METYL DEXTRAN, ETHYL, DEXTRAN, HYDROXYL-PROPYL DEXTRAN, METHYL CELLULOSE, ETHYL CELLULOSE, ETHYLHYDROXYETHYL CELLULOSE, POLYVINYL ALCOHOL ETHYL ETHER OF DEXTRAN, HYDROXYETHYL ETHER OF DEXTRAN, 2-HYDROXYPROPYL ETHER OF DEXTRAN, DEXTRAN GLYCERINE GLUCOSIDE, HYDRODEXTRAN AND POLYVINLY ALCOHOL, (B) REACTING WITH SAID HYDROXYL POLYMER SUBSTANCE A BIFUNCTIONAL ORGANIC SUBSTANCE CAPABLE OF RECTING WITH THE HYDROXY GROUPS OF THE UNCHARGED POLYMER SUBSTANCE WITH THE FORMATION OF ETHER BRIDGES, SAID BIFUCNTIONAL ORGANIC SUBSTANCES BEING SELECTED FROM THE GROUP CONSISTING OF EPICHLOROHYDRIN, DICHLOROHYDRIN, 1,2,3,4-DIEPOXYBUTANE, BIS-EPOXY PROPYL ETHER, ETHYLENE GLYCOL-BIS-EPOXY PROPYL ETHER AND 1,4-BUTAN-DIOLBIS-EPOXYPROPYL ETHER, (C) SAID REACTION BEING CARRIED OUT IN THE PRESENCE OF AN ALKALINE REACTING SUBSTANCE, (D) SAID FIRST LIQUID SOLUTION OF SAID HYDROXYL POLYMER SUBSTANCE BEING ADMIXED, PRIOR TO RSAID REACTION, WITH A SECOND LIQUID MEDIUM COMPRISING AN ORGANIC COMPOUND THAT ITS IMMISCIBLE WITH WATER SO THAT A TWOPHASE SYSTEM IS FORMED, SAID SECOND LIQUID MEDIUM CONSTITUTING THE CONTINUOUS PHASE, (E) AGITATING SAID FIRST LIQUID SOLUTION OF SAID HYDROXYL POLYMER SUBSTANCE AND SAID SECOND LIQUID MEDIUM SUFFICEINTLY TO CAUSE THE FORMATION OF DROPS CONTAINING SAID HYDROXYL POLYMER SUBSTANCE WITHIN THE CONTINUOUS PHASE PROVIDED BY SAID SECOND LIQUID MEDIUM, (F) SAID DROPS BEING MAINTAINED AT LEAST UNTIL GEL FORMATION HAS TAKEN PLACE AS THE RESULT OF THE REACTION OF SAID HYDROXYL POLYMER WITH SAID BIFUNCTIONAL ORGANIC SUBSTANCE IN THE PRESENCE OF SAID ALKALINE RACTING SUBSTANCE, AND (G) RECOVERING THE GEL GRAINS OF THE COPOILYMERIZATES FORMED FROM SAID REACTION.

Claim 2

A METHOD OF THE MANUFACTURE OF HIGH MOLECULAR WEIGHT HYDROPHILIC COPOLYMERIZATES IN THE FORM OF GEL GRAINS WHICH COMPRISES: (A) PROVIDING A FIRST LIQUID SOLUTION OF A HYDROXYL GROUP-CONTAINING UNCHARGED POLYMER SUBSTANCE, SAID FIRST LIQUID SOLUTION CONTAINING WATER AS THE MAIN LIQUID COMPONENT, AND SAID POLYMER SUBSTANCE BEING SELECTED FROM THE GROUP CONSISTING OF DEXTRAN, STARCH, DEXTRIN, CELLULOSE, POLYGLUCOSE, METYL DEXTRAN, ETHYL, DEXTRAN, HYDROXYL-PROPYL DEXTRAN, METHYL CELLULOSE, ETHYL CELLULOSE, ETHYLHYDROXYETHYL CELLULOSE, POLYVINYL ALCOHOL ETHYL ETHER OF DEXTRAN, HYDROXYETHYL ETHER OF DEXTRAN, 2-HYDROXYPROPYL ETHER OF DEXTRAN, DEXTRAN GLYCERINE GLUCOSIDE, HYDRODEXTRAN AND POLYVINLY ALCOHOL, (B) REACTING WITH SAID HYDROXYL POLYMER SUBSTANCE A BIFUNCTIONAL ORGANIC SUBSTANCE CAPABLE OF RECTING WITH THE HYDROXY GROUPS OF THE UNCHARGED POLYMER SUBSTANCE WITH THE FORMATION OF ETHER BRIDGES, SAID BIFUCNTIONAL ORGANIC SUBSTANCES BEING SELECTED FROM THE GROUP CONSISTING OF EPICHLOROHYDRIN, DICHLOROHYDRIN, 1,2,3,4-DIEPOXYBUTANE, BIS-EPOXY PROPYL ETHER, ETHYLENE GLYCOL-BIS-EPOXY PROPYL ETHER AND 1,4-BUTAN-DIOLBIS-EPOXYPROPYL ETHER, (C) SAID REACTION BEING CARRIED OUT IN THE PRESENCE OF AN ALKALINE REACTING SUBSTANCE, (D) SAID FIRST LIQUID SOLUTION OF SAID HYDROXYL POLYMER SUBSTANCE BEING ADMIXED, PRIOR TO RSAID REACTION, WITH A SECOND LIQUID MEDIUM COMPRISING AN ORGANIC COMPOUND THAT ITS IMMISCIBLE WITH WATER SO THAT A TWOPHASE SYSTEM IS FORMED, SAID SECOND LIQUID MEDIUM CONSTITUTING THE CONTINUOUS PHASE, (E) AGITATING SAID FIRST LIQUID SOLUTION OF SAID HYDROXYL POLYMER SUBSTANCE AND SAID SECOND LIQUID MEDIUM SUFFICEINTLY TO CAUSE THE FORMATION OF DROPS CONTAINING SAID HYDROXYL POLYMER SUBSTANCE WITHIN THE CONTINUOUS PHASE PROVIDED BY SAID SECOND LIQUID MEDIUM, (F) SAID DROPS BEING MAINTAINED AT LEAST UNTIL GEL FORMATION HAS TAKEN PLACE AS THE RESULT OF THE REACTION OF SAID HYDROXYL POLYMER WITH SAID BIFUNCTIONAL ORGANIC SUBSTANCE IN THE PRESENCE OF SAID ALKALINE RACTING SUBSTANCE, AND (G) RECOVERING THE GEL GRAINS OF THE COPOILYMERIZATES FORMED FROM SAID REACTION.