-
公开(公告)号:ZA751075B
公开(公告)日:1976-02-25
申请号:ZA751075
申请日:1975-02-20
Applicant: HOECHST AG
Abstract: Oxymethylene copolymer having heat and hydrolysis resistant terminal groups is prepared by heating the polymers present in a liquid phase, whereby a thermal degradation of the unstable terminal groups takes place. The degradation is advantageously effected in the presence of a calcium or magnesium salt of an aliphatic carboxylic acid of low molecular weight. The oxymethylene copolymers are suitable as engineering plastic for preparing semi-finished products and finished products.
-
-
公开(公告)号:SE7501987L
公开(公告)日:1975-08-25
申请号:SE7501987
申请日:1975-02-21
Applicant: HOECHST AG
Abstract: Oxymethylene copolymer having heat and hydrolysis resistant terminal groups is prepared by heating the polymers present in a liquid phase, whereby a thermal degradation of the unstable terminal groups takes place. The degradation is advantageously effected in the presence of a calcium or magnesium salt of an aliphatic carboxylic acid of low molecular weight. The oxymethylene copolymers are suitable as engineering plastic for preparing semi-finished products and finished products.
-
公开(公告)号:DK657274A
公开(公告)日:1975-08-25
申请号:DK657274
申请日:1974-12-17
Applicant: HOECHST AG
Inventor: SEXTRO G , HEFNER K-H , BURG K
-
公开(公告)号:SE7415191L
公开(公告)日:1975-06-16
申请号:SE7415191
申请日:1974-12-04
Applicant: HOECHST AG
Inventor: SEXTRO G , BURG K , DURICHEN K
-
-
公开(公告)号:ZA7309639B
公开(公告)日:1975-01-29
申请号:ZA7309639
申请日:1973-12-21
Applicant: HOECHST AG
Inventor: SEXTRO G , BURG K , GUTWEILER K
CPC classification number: C08G2/24 , B01J2219/00076 , B01J2219/00162 , B01J2219/00168
-
-
-
公开(公告)号:SE349313B
公开(公告)日:1972-09-25
申请号:SE620368
申请日:1968-05-08
Applicant: HOECHST AG
Inventor: BURG K , CHERDRON H
IPC: C08F283/06 , C08F25/00 , C08G1/22
-
-
-
-
-
-
-
-
-