Process for producing a polyacetal resin composition
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsSatoshi Nagai, Masao Hasegawa, Hiroshi Mimura, Makoto Kobayashi
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Abstract
There is disclosed a process for producing a polyacetal resin composition, which comprises mixing (A) a polyacetal resin, (B) a thermoplastic polyurethane elastomer and (B) a polyhydric alcohol having at least three hydroxyl groups in the molecule, in molten state with shear, at a temperature of 180.degree. to 250.degree. C. The polyacetal resin composition produced by the above process gives injection-molded shaped articles showing various well-balanced physical properties such as tensile strength and elongation at break at weld portions, and impact resistance.
Claims7
A process for producing a polyacetal resin composition, which comprises mixing a polyacetal resin (A), a thermoplastic polyurethane elastomer (B) and a polyhydric alcohol (C) selected from the group consisting of glycerine, trimethylolethane, trimethylolpropane, hexantriol, triethanolamine, diglycerine, pentaerythritol, tetraethanol ethylenediamine, methylglucosite, aromatic diamine-tetraethanol adduct, sorbitol, dipentaerythritol, cyclodextrin, phenoxy resin and polyvinyl alcohol, in molten state with shear, at a temperature of 180.degree. to 250.degree. C., the polyacetal resin (A), the thermoplastic polyurethane elastomer (B) and the polyhydric alcohol (C) being used at such weight ratios as satisfy the equations below:
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Dependencies are inferred from the claim text.