Polyester resin
AssigneeMitsubishi Chemical Corporation
InventorsYoko Tamura, Tadahiro Ozawa, Yoshihiro Kamon, Takafumi Asai
Life of this patent
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Abstract
A polyester resin including: structural unit (A) represented by a specific formula; structural unit (B) derived from an aliphatic diol having 3 to 8 carbon atoms (provided that the structural unit (A) is excluded); and at least one structural unit (C) selected from the group consisting of structural unit (c1) derived from a trivalent or higher-valent acid component and structural unit (c2) derived from a trihydric or higher-hydric alcohol component, the polyester resin including the structural unit (B) in an amount of 20 molar parts or more with respect to 100 molar parts of all the structural units derived from acid components.
Claims19
A polyester resin, comprising:
- at least one structural unit (A) represented by General Formula (1):
- at least one structural unit (B) selected from the group consisting of neopentyl glycol, 1,2-propanediol, 1,3-propanediol, 1,3-butanediol, 1,4-butanediol, diethylene glycol, triethylene glycol, and 1,4-cyclohexanedimethanol;
- and
- at least one structural unit (C) selected from the group consisting of structural unit (c1) derived from a trivalent or higher-valent acid component and structural unit (c2) derived from a trihydric or higher-hydric alcohol component,
- wherein the polyester resin includes the structural unit (B) in an amount of 20 molar parts or more with respect to 100 molar parts of all the structural units derived from acid components, wherein the acid components are carboxylic acid components,
- every structural unit in the polyester resin that is derived from an acid is derived from a carboxylic acid, and
- every structural unit in the polyester resin that is a diol consists of a structural unit (A), a structural unit (B), or an ethylene glycol unit.
Dependencies are inferred from the claim text.