Transparent resin composition having good chemical resistance, durability and stability under natural environmental conditions, harsher natural environmental conditions, and similar or harsher usage conditions, and product using same

摘要

The invention provides a transparent resin composition which is stable and has weather resistance and chemical resistance under natural environmental conditions, under harsher natural environmental conditions, and under similar or harsher usage conditions, the composition comprising a polycyclohexylene dimethylene terephthalate copolyester, and further comprising an ultraviolet absorber composed of a benzoxazinone-based compound and/or a hydrolysis inhibitor composed of a carbodiimide; a transparent resin composition which is stable and has weather resistance and chemical resistance under even harsher usage conditions; and a transparent resin composition which is stable and has weather resistance and chemical resistance under the above conditions, the composition further comprising an antioxidant and a heat-resistant material. These transparent resin compositions can be used for helmets, face shields for helmets, lenses for spectacles, outer cases for storing items, sheet materials for outdoor installation, and frames and temples for spectacles.

主权项

1. A transparent resin composition which is stable and has weather resistance and chemical resistance, comprising:
a copolymer resin that comprises a dimethyl terephthalate as an acid component, and comprises a 1,4-cyclohexanedimethanol and a 2,2,4,4,-tetramethylcyclobutan-1,3-diol as a glycol component; 0.25 to 2.5% by weight of an ultraviolet absorber composed of a benzoxazinone-based compound; and 0.125 to 0.5% by weight of polycarbodiimide.