Process for the manufacture of granular oxymethylene polymers
摘要
Oxymethylene polymers (POM) are obtained in granular form by cooling a POM solution or dispersion having a temperature above the sintering temperature of the POM in two stages to a temperature just below the said sintering temperature. The solvent or dispersion agent used is a mixture of methanol and water and the cooling agent is a methanol/water mixture which may contain POM suspended therein. The granular POM obtained is suitable as technical material for making shaped articles.
申请公布号
US4046738(A)
申请公布日期
1977.09.06
申请号
US19750629628
申请日期
1975.11.05
申请人
HOECHST AKTIENGESELLSCHAFT
发明人
SEXTRO, GUNTER;BURG, KARLHEINZ;LEUGERING, HANS JOACHIM;SCHLAF, HELMUT;HELLER, ALWIN