Showing papers on "Triphenyl phosphate published in 1979"

Preparation of highly stereoregular alpha-olefin polymer

Abstract: PURPOSE: To obtain the title polymer, which is spherical and has a large particle size, by use of a solid catalyst component, prepared by reacting a product from the reaction of a Mg compound with a Si halide compound etc., with at least two compounds containing N, O, P or S, and with a Ti compound. CONSTITUTION: A solid product obtained by the reaction of (i) an organic Mg compound ( e.g.; a Grignard compound) with (ii) a compound of formula I (wherein R is 1W8C hydrocarbon residue; X is halogen; 0≤n<4) or with a compound of formula II (wherein 0≤l<3), in a solvent at -50W150°C, is reacted with (iii) at least two compounds, containing N, O, P or S and different in bonding manner (e.g.; triphenyl phosphate) and (iv) a compound having a Ti-halogen bond (e.g.; TiCl 4 ), at -50W200°C, to obtain catalyst component (A). An α-olefin is polymerized in the presence of component (A), (B) an activator of formula III (wherein Y is halogen or H; 2

Injection molded polyester article and its manufacture

Abstract: PURPOSE:To obtain a highly crystalline molded article suitable for electrical and mechanical parts, by injection molding of a specific blend of a triaryl phosphate, a solid inorganic substance having a nucleating action, and polyethylene tetephthalate in a low-temperature mold CONSTITUTION:(A) 100 parts by wt of polyethylene terephthalate is blended with (B) 5-20 parts by wt of a triaryl phosphate, eg triphenyl phosphate, etc and (C) 01-10 parts by wt of a solid inorganic substance, eg talc, etc having a particle size of 001-10mu and a nucleating action and/or a metal salt of an organic acid, eg calcium oxalate, etc The polyester composition thus obtained is injection molded at a mold temperature of 100 degC to room temperature to give a molded article having a density of resin of 135 or higher EFFECT:Low aldehyde content