公开(公告)号：US3346563A

公开(公告)日：1967-10-10

申请号：US38826464

申请日：1964-08-07

Applicant: STALEY MFG CO A E

Inventor： SHILDNECK PAUL R ,  HATHAWAY ROBERT J

IPC: C08B31/00 ,  C08B31/12

CPC classification number: C08B31/125 ,  C08B31/00

公开(公告)号：US3556942A

公开(公告)日：1971-01-19

申请号：US3556942D

申请日：1967-07-17

Applicant: STALEY MFG CO A E

Inventor： HATHAWAY ROBERT J

IPC: C08B30/20 ,  C13L1/00

CPC classification number: C08B30/20 ,  Y10S435/828

Abstract: METHOD FOR FRACTIONATING AND SEPARATING AMYLOSE FROM A COOKED STARCH SOLUTION BY CONTACTING SAID COOKED STARCH SOLUTION WITH A MATERIAL EXHIBITING PULLULANASE ACTIVITY FOR A TIME SUFFICIENT TO REDUCE THE SOLUTION''S VISCOSITY TO A VICOSITY OF PREFERABLY LESS THAN 10,000 CENTIPOISES MEASURED AT 40*C., AND THEREAFTER SEPARATING SAID AMYLOSE FROM THE SOLUTION.

公开(公告)号：US3702847A

公开(公告)日：1972-11-14

申请号：US3702847D

申请日：1970-12-16

Applicant: STALEY MFG CO A E

Inventor： HATHAWAY ROBERT J

IPC: C07C51/367 ,  C08B31/12 ,  C08B19/06

CPC classification number: C08B31/12 ,  C07C51/367 ,  C07C59/115 ,  C07C59/295

Abstract: CHLOROHYDROXY ACIDIC REAGENTS, SUCH AS CHLOROHYDROXYPROPIONIC ACID (CHP) AND CHLORINATION OF ACRYLIC ACID AND MALEIC ACIDS, RESPECTIVELY, ARE USED TO INTRODUCE CARBOXYL GROUPS INTO STARCH IN THE PRESENCE OF AN ALKALINE CATALYST. SOME OF THE RESULTING CARBOXYHYDROXY ALKYL STARCH DERIVATIVES, WHEN FURTHER MODIFIED, ARE USEFUL IN PAPER MANUFACTURE AS FILLER RETENTION AIDS. IT IS EXPECTED THAT THE MODIFIED STARCHES OF THE INVENTION WILL ALSO BE USEFUL IN FOODS. CLEAVAGE OF THE ETHER LINKAGE SHOULD TAKE PLACE DURING METABOLISM, AND THE REACTION BY-PRODUCTS SHOULD INCLUDE GLYCERIC AND TARTARIC ACID, BOTH OF WHICH ARE NATURALLY OCCURRING METALBOLITES. THE STARCH DERIVATIVES MADE BY THE METHOD OF THIS INVENTION EXHIBIT ANIONIC CHARACTERISTICS, AND WHEN CHLOROHYDROXYPROPIONIC ACID REAGENT IS REACTED WITH A CATIONIC CORN STARCH, THE RESULTING PRODUCT IS A SUBSTANTIALLY IMPROVED FILLER RETENTION AID.