COMPOSITION FOR ELASTIC ABRASIVE TOOL MAKING Russian patent published in 1996 - IPC

FIELD: special compositions. SUBSTANCE: composition has, mas. p.: synthetic corundum or silicon carbide 100; epoxy resin containing 16-22% epoxide groups or its mixture with nitrile rubber containing 2.9% carboxylic groups, or with polydivinylisopreneurethan rubber containing 1.9-3.1% epoxide groups, polyhydroxypropyleneamine or polypropyleneamine, or mixture of polyhydroxypropyleneamine with polyethylenepolyamine or with low-molecular compounds of amine type and quick water-soluble solid compounds. In the case of mixture of epoxy resin with nitrile rubber it contains bivalent metal oxide. Tool is made by casting method. Properties: porosity is 16-32%, working rate is 30-40 m/s, tensile strength limit is 2.0-6.4 MPa. EFFECT: improved properties of tool. 2 cl, 6 ex, 2 tbl