公开(公告)号：DE3044118A1

公开(公告)日：1982-06-24

申请号：DE3044118

申请日：1980-11-24

Applicant: BASF AG

Inventor： SCHUETTE WILHELM DIPL CHEM DR ,  HILT ALBRECHT DIPL CHEM DR ,  WALTER MANFRED DIPL CHEM DR

IPC: C08L59/00 ,  C08G12/42 ,  C08L59/02 ,  C08L61/00 ,  C08L61/04 ,  C08L61/20 ,  C08L61/28 ,  C08L61/26

Abstract: Polyacetal molding materials which contain, as a stabilizer, from 0.1 to 10% by weight of a melamine resin, the latter being a melamine-formaldehyde condensate, having a mean degree of polymerization of from 1.2 to 6.0 and a melamine:formaldehyde ratio of from 1:2 to 1:5.5, which has been partially etherified with a C1-C4-alkanol so that the ratio melamine:ether radicals is from 1:1.5 to 1:5.0 and the ratio melamine:free methylol groups is from 1:0.5 to 1:3. The molding materials can be converted to moldings which can be used industrially at elevated ambient temperatures.

公开(公告)号：DE2741006A1

公开(公告)日：1979-03-29

申请号：DE2741006

申请日：1977-09-12

Applicant: BASF AG

Inventor： SCHMIDT FRANZ DIPL CHEM DR ,  SCHUETTE WILHELM DIPL CHEM DR ,  STRICKLE ERICH ING GRAD ,  RATH HANS PETER DIPL CHEM DR

IPC: C08K5/06 ,  C08L59/02 ,  F16C33/20 ,  C08K5/05

公开(公告)号：DE2436384A1

公开(公告)日：1976-02-12

申请号：DE2436384

申请日：1974-07-29

Applicant: BASF AG

Inventor： DOERFEL HELMUT DIPL CHEM DR ,  SCHMIDT FRANZ DIPL CHEM DR ,  SCHUETTE WILHELM DIPL CHEM DR ,  CORDES CLAUS DIPL CHEM DR ,  SCHENK WOLFGANG DIPL CHEM DR

IPC: C08G2/00 ,  C08G2/28

Abstract: Method of removing odorous formaldehyde from stabilized shaped polyoxymethylenes in which an inert gas is caused to flow over stabilized and shaped solid polyoxymethylenes at elevated temperatures not high enough to cause sticking or fusion of the polyoxymethylene, until substantially all of the volatile formaldehyde has been removed.