Clarifying agent for polyolefin resins, polyolefin-based resin composition manufacturing method and transparency has been improved its

摘要

PURPOSE: To impart an excellent clarity to a polyolefin resin by using a clarifier comprising a dibenzylidene-polyhydric alcohol (esp. sorbitol) deriv., a water-sol. colorant, and a nondrying oil. ;CONSTITUTION: The clarifier for a polyolefin resin is prepd. by mixing 100 pts.wt. dibenzylidene-polyhydric alcohol deriv. (A) formed by condensing 2mol of (a nucleus-substd.) benzaldehyde with 1mol of a penta- or hexahydric alcohol, 0.001-0.5 pt.wt. water-sol. or -miscible and polar-solvent-sol. colorant (B). and 0.1-10 pts.wt. component (C) which is a nondrying oil or an 8C or higher ester of an alcohol with a fatty acid and has an iodine value of 100 or lower to cause component A to adsorb components B and C. Component A is pref. formed from a substd. benzaldehyde represented by the formula (wherein R₁ and R₂ are each methyl or Cl at the p-position) and sorbitol. Component C is pref. a nondrying vegetable oil. The clarifier in an amt. of 0.01-3 pts.wt. is compounded into 100 pts.wt. polyolefin resin.;COPYRIGHT: (C)1996,JPO