Polyvinyl chloride resin composition and surface delustered article
AssigneeSumitomo Chemical Company, Limited
InventorsTugio Mitani, Masayuki Yoshihara, Hiroaki Maruyama
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Abstract
A method of making a matted article, as well as the article per se wherein it is derived from molding and heat treating a vinyl chloride resin composition incorporated with 0.002-0.02 mol of zinc carboxylate for 100 g of vinyl chloride resin and 0.3-5 mol of a compound having two or more alcoholic hydroxyl groups in one molecule per mol of the zinc carboxylate. This composition yields an article having a good matte-finished surface owing to minute corrugated irregularities formed on the surface.
Claims11
A method of making a matte-finished vinyl chloride resin article, which comprises providing a vinyl chloride resin composition containing 0.002-0.02 mol of a zinc carboxylate per 100 g of a vinyl chloride resin and 0.3-5 mol of a compound having two or more alcoholic hydroxyl groups in one molecule per mol of the zinc carboxylate, the content of an alkaline earth metal carboxylate in said composition being less than 0.7 mol, and the content of each of tin compound, lead compound and alkali metal carboxylate in said composition being less than 0.3 mol per mol of the zinc carboxylate;
- molding said composition into an article;
- heat-treating said article, after the molding, to produce said matte-finished vinyl chloride resin article;
- and stopping said heat-treating upon production of said matte-finished vinyl chloride resin article.
A matte-finished article which is obtained by molding a vinyl chloride resin composition containing 0.002-0.02 mol of a zinc carboxylate per 100 g of a vinyl chloride resin and 0.3-5 mol of a compound having two or more alcoholic hydroxyl groups in one molecule per mol of the zinc carboxylate, the content of an alkaline earth metal carboxylate in said composition being less than 0.7 mol, and the content of each of tin compound, lead compound and alkali metal carboxylate in said composition being less than 0.3 mol per mol of the zinc carboxylate;
- and heat-treating the resulting molded product, after the molding, until said matte-finished article is produced.
Dependencies are inferred from the claim text.