公开(公告)号：DE3214982A1

公开(公告)日：1983-10-27

申请号：DE3214982

申请日：1982-04-22

Applicant: BASF AG

Inventor： BRANDSTAETTER FRANZ DIPL CHEM ,  SIMAK PETER DIPL CHEM DR ,  SADLOWSKI JUERGEN DIPL ING DR ,  WALTER MANFRED DIPL CHEM DR ,  ZIEGLER WALTER DIPL CHEM DR

IPC: C08G81/02 ,  C08L9/00 ,  C08L23/08 ,  C08L25/04 ,  C08L53/02 ,  C08L69/00 ,  C08L71/12 ,  C08F220/26 ,  C08F293/00

公开(公告)号：DE3147309A1

公开(公告)日：1983-06-01

申请号：DE3147309

申请日：1981-11-28

Applicant: BASF AG

Inventor： SADLOWSKI JUERGEN DIPL ING DR ,  WALTER MANFRED DIPL CHEM DR ,  HINSELMANN KLAUS DIPL ING

IPC: C08G2/00 ,  C08G2/10 ,  C08G2/30

Abstract: Oxymethylene polymers are prepared by a continuous process, by mass polymerization of the monomers with the aid of conventional, preferably cationic, initiators, wherein the monomers as well as the resulting polymer are present substantially in molten form during the polymerization.

公开(公告)号：DE3207773A1

公开(公告)日：1982-09-16

申请号：DE3207773

申请日：1982-03-04

Applicant: BASF AG

Inventor： SADLOWSKI JUERGEN DIPL ING DR ,  WALTER MANFRED DIPL CHEM DR

IPC: C08G2/10 ,  C08G2/18

Abstract: The invention relates to a process for the continuous bulk polymerisation of trioxane with the aid of cationic polymerisation initiators in a plurality of zones: in the first polymerisation zone A, liquid trioxane is polymerised to a conversion of from 30 to 80% at a pressure of from 2 to 100 bar and at a temperature at the exit to the zone of from 116 to 160 DEG C; in a decompression zone B, the resultant suspension is decompressed to atmospheric pressure, during which from 10 to 60% of the trioxane originally employed evaporates; in a second polymerisation zone C, the polymerisation is continued at a temperature of from 65 to 115 DEG C.