Polyester resin, polyester container, polyester film, polyester fiber, and method for producing polyester resin
AssigneeMitsubishi Chemical Corporation
InventorKento SAKAMOTO
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Abstract
Provided is a polyester resin being a reaction product of a polyester (A) having a glass transition temperature of 30° C. or higher and lower than 140° C. and a polyester (B1) having a glass transition temperature of −80° C. or higher and lower than 30° C. as a polyester resin excellent in mechanical recyclability and optical properties without deterioration in mechanical properties even when a pressure sensitive adhesive is included in a mechanical recycling step.
Claims23
A polyester resin, which is a reaction product of a polyester (A) having a glass transition temperature of 30° C. or higher and lower than 140° C. and a polyester (B1) having a glass transition temperature of −80° C. or higher and lower than 30° C.
A method for producing a polyester resin, the method comprising reacting a polyester (A) having a glass transition temperature of 30° C. or higher and lower than 140° C. and a polyester (B1) having a glass transition temperature of −80° C. or higher and lower than 30° C.
Dependencies are inferred from the claim text.