公开(公告)号：US3657388A

公开(公告)日：1972-04-18

申请号：US3657388D

申请日：1970-04-16

Applicant: HOECHST AG

Inventor： SCHWEIZER PETER ,  THALER HANS

IPC: C08G63/80 ,  C08G69/06 ,  C08G85/00 ,  C08G17/003 ,  C08G39/10

CPC classification number: C08G69/06 ,  C08G63/80 ,  C08G85/00

Abstract: LINEAR CONDENSATION POLYMERS OF HIGH MOLECULAR WEIGHT, FOR EXAMPLE, POLYESTERS OR POLYAMIDES, OR THE INITIAL PRODUCTS THEREOF ARE CONDENSED IN THE SOLID STATE IN THE FORM OF PRESSED OBJECTS OBTAINED FROM THE POWDERY OR VERY FINE-GRAINED MATERIALS HAVING A PARTICLE DIAMETER OF UP TO 2 MILLIMETERS. THE CONDENSATION IS THE SOLID STATE IS CARRIED OUT UNDER REDUCED PRESSURE OR IN AN INERT GAS ATMOSPHERE. THE PROCESS IS APPLICABLE, FOR EXAMPLE, TO POLYETHYLENE TEREPHTHALATE, NYLON 6 AND NYLON 66.

公开(公告)号：US3535285A

公开(公告)日：1970-10-20

申请号：US3535285D

申请日：1968-02-14

Applicant: HOECHST AG

Inventor： BREINER ROBERT ,  THALER HANS

IPC: C08G63/80 ,  C08G69/06 ,  C08J3/28 ,  C08G17/00 ,  C08G20/38

CPC classification number: C08G63/80 ,  C08G69/06 ,  C08J3/28

公开(公告)号：US3657191A

公开(公告)日：1972-04-18

申请号：US3657191D

申请日：1970-06-09

Applicant: HOECHST AG ,  HELLA TITZMANN ,  KLAUS TITZMANN ,  JORG TITZMANN ,  MICHELL TITZMANN ,  HANS THALER ,  JOSEF WALTER

Inventor： TITZMANN RUDOLF ,  TITZMANN HELLA ,  TITZMANN KLAUS ,  TITZMANN JORG ,  TITZMANN MICHAEL ,  THALER HANS ,  WALTER JOSEF

IPC: C08G63/42 ,  D01F6/62 ,  C08G17/14

CPC classification number: C08G63/42 ,  D01F6/62 ,  D01F6/84

Abstract: THE PRESENT INVENTION RELATES TO A PROCESS FOR THE MANUFACTURE OF LINEAR POLYESTERS HAVING AN IMPROVED STABILITY WITH RESPECT TO COMPOUNDS WITH ACTIVE HYDROGEN. POLYESTERS OF THIS TYPE ARE OBTAINED BY REACTING POLYESTERS WITH ETHYLENE CARBONATES OR MONOFUNCTIONAL GLYCIDYL ETHERS. THE REACTION IS FIRST CARRIED OUT WITHIN A TEMPERATURE RANGE LYING 10* TO 60*C. BELOW THE SOFTENING POINT OF THE POLYESTER AND IS THEN TERMINATED DURING THE MELTING- AND MELTSPINNING PROCESS.