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US 10,370,496 B2Granted
Polyamic acid resin and polyamideimide film
AssigneeSK Innovation Co., Ltd.
InventorsSang Yoon Park, Hyeon Jeong Kim, Tae Sug Jang, Jin Hyung Park
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Abstract
Provided are a polyamic acid resin, a polyamideimide film, and a method for preparing the same. More specifically, provided are a polyamic acid resin derived from a combination of specific components, and a polyamideimide film capable of implementing high modulus and excellent optical properties.
Claims14
A polyamideimide film comprising:
- a polyamideimide resin derived from an aromatic diamine, wherein the aromatic diamine comprises 2,2′-bis(trifluoromethyl)-benzidine;
- an acid anhydride comprising an aromatic dianhydride and a cycloaliphatic dianhydride;
- and
- an aromatic diacid dichloride,
- wherein
- an amount of the aromatic diacid dichloride is more than 50 mol based on 100 mol of the aromatic diamine, and
- a molar ratio between the aromatic diacid dichloride and the aromatic dianhydride ranges from 2.50 to 7.00.
4 more elements
A polyamic acid resin derived from aromatic diamine, acid anhydride, and aromatic diacid dichloride,
- wherein the aromatic diamine includes 2,2′-bis(trifluoromethyl)-benzidine,
- the acid anhydride includes aromatic dianhydride and cycloaliphatic dianhydride,
- the aromatic diacid dichloride has a content of more than 50 mol with respect to 100 mol of the aromatic diamine, and
- a molar ratio between the aromatic diacid dichloride and the aromatic dianhydride ranges from 2.50 to 7.00.
1 more element
A polyamideimide film comprising:
- a polyamideimide resin derived from an aromatic diamine, an acid anhydride, and an aromatic diacid dichloride,
- wherein
- the aromatic diamine comprises 2,2′-bis(trifluoromethyl)-benzidine,
- the acid anhydride comprises an aromatic dianhydride and a cycloaliphatic dianhydride,
- an amount of the aromatic diacid dichloride is more than 50 mol based on 100 mol of the aromatic diamine,
- a total light transmittance of the polyamideimide film is 88% or more, and
- a Yellow index of the polyamideimide film is 3.0 or less.
4 more elements
Dependencies are inferred from the claim text.