POLYMERIC COMPOSITION Russian patent published in 1994 - IPC

FIELD: manufacture of articles for construction and electrotechnical purposes. SUBSTANCE: the composition comprises (wt %): 57-82 polyacetal; 10-30 a fibrous filler; 1.5-3 melamine; 1.5-2 an epoxy resin in combination with pyromellitic acid dianhydride used in a 10:1 to 10:3 ratio; 5-8 a powdery mineral filler (calcium, kaolin, talc). The composition has the following properties: the ultimate tensile strength is 85-112 MPa; the bending strength is 123 MPa; the longitudinal elasticity modulus is 70-30; the bending elasticity is 5240 MPa; Brunnel hardness is 155 MPa. EFFECT: improved properties of the polymeric composition. 1 tbl