公开(公告)号：BR7401162A

公开(公告)日：1975-10-14

申请号：BR116274

申请日：1974-02-18

Applicant: HOECHST AG

Inventor： RACKY W ,  CHEDRON H

IPC: C01B25/00 ,  C08K3/00 ,  C08K3/02 ,  C08K3/28 ,  C08L1/00 ,  C08L23/00 ,  C08L27/00 ,  C08L33/00 ,  C08L33/02 ,  C08L67/00 ,  C08L77/00 ,  C08L101/00 ,  C08K1/00 ,  C08J1/00

公开(公告)号：SE340694B

公开(公告)日：1971-11-29

申请号：SE1790667

申请日：1967-12-28

Applicant: HOECHST AG

Inventor： CHEDRON H ,  FISCHER E ,  HERMANN H

IPC: C08F2/00 ,  C08F2/46 ,  C08G2/00 ,  C08G2/18 ,  C08G1/12 ,  C08G1/14 ,  C08G1/16

Abstract: 1,211,641. Trioxan copolymerization. FARBWERKE HOECHST A.G. 1 Jan., 1968 [30 Dec., 1966], No. 49/68. Heading C3P. Trioxan is copolymerized with a cyclic ether and/or cyclic acetal in the presence of a cationic initiator at a temperature from the melting- point (62‹ C.) to the boiling-point (115‹ C.) of trioxan in a container made of an oxymethylene polymer, suitably having a crystallite melting-point of 120‹ C. to 180‹ C., with subsequent working up of the polymer together with the container. The polymerization is conducted in the melt, with the container being formed from a film or sheet e.g. a bag or pipe. In the examples, trioxan and ethylene oxide are copolymerized in the presence of p-nitrophenyl diazonium fluoroborate or BF 3 .(C 4 H 9 ) 2 O and in a bag made from a copolymer of trioxan and ethylene oxide, or a terpolymer of these monomers with either butane diol diglycidyl ether or hexane triol formal, the resulting polymers being purified by treating with benzyl alcohol and triethanolamine, separating by precipitation and then boiling with methanol.