METHOD OF MAKING IMPROVED POLYOXYMETHYLENE NONREINFORCED MOLDING COMPOSITION CHARACTERIZED BY LOW DEPOSIT ON MOLD DIE,申请号JP19770147278-传众专利搜索

METHOD OF MAKING IMPROVED POLYOXYMETHYLENE NONREINFORCED MOLDING COMPOSITION CHARACTERIZED BY LOW DEPOSIT ON MOLD DIE

申请公布号：JPS5377242(A)

申请号：JP19770147278

申请日期：1977.12.09

申请公布日期：1978.07.08

申请人：

CELANESE CORP

发明人：ROBAATO EEDERUMAN

分类号：C08L59/00;C08G2/30;C08K5/29;C08K5/32;C08L59/02;C08L79/00

主分类号：C08L59/00

摘要：The mold deposit problem commonly associated with non-reinforced polyoxymethylene molding compositions which creates a non-uniform surface on a molded article effectively is minimized. The polyoxymethylene polymer initially is heated (as described) while in admixture with about 0.25 to about 3 percent by weight based upon the weight of the polyoxymethylene polymer of a certain polycarbodiimide. The polycarbodiimide contains at least three carbodiimide units per polycarbodiimide molecule and is derived from one or more aromatic diisocyanates which are unsubstituted or are substituted with up to one methyl substituent on each aromatic ring.