Aromatic polyamide solution for producing display element, optical element, or illumination element
A technology of aromatic polyamide and polyamide, applied in the direction of polyamide coatings, chemical instruments and methods, synthetic resin layered products, etc., can solve problems such as heat resistance reduction, heat resistance and mechanical strength problems
Inactive Publication Date: 2015-12-23
AKRON POLYMER SYST +1
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Problems solved by technology
[0003] Highly transparent polycarbonates and the like are known as transparent resins for optical applications. However, heat resistance and mechanical strength are problematic when used in the manufacture of display elements.
On the other hand, polyimides can be cited as heat-resistant resins. However, general polyimides are colored dark brown, so there are problems in optical applications. In addition, as polyimides with transparency , a polyimide having a ring structure is known, but it has a problem of lowering heat resistance
Method used
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Embodiment 1
[0223] [Preparation of polyamide solution]
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Abstract
The present disclosure according to one or more embodiments relates to a polyamide solution that can reduce the Rth of a cast film. The present disclosure according to one or more embodiments relates to a polyamide solution including an aromatic polyamide and a solvent, wherein: said aromatic polyamide is constituted by at least two repeating units; at least one of said repeating units includes one or more free carboxyl groups; and the elastic modulus at 30DEG of a film prepared by being cast on a glass plate is 5.0 GPa or less, and the coefficient of linear expansion (CTE) of the film is greater than 30.0 ppm / K.
Description
technical field [0001] One aspect of the present invention relates to a polyamide solution containing an aromatic copolyamide and a solvent. In the above-mentioned aromatic copolyamide, the above-mentioned aromatic polyamide is composed of at least two repeating units, at least one of the above-mentioned repeating units has one or more free carboxyl groups, and has an elastic modulus below a specified value and a linear expansion coefficient exceeding a specified value (CTE). Another aspect of the present invention relates to a laminated composite material including a glass plate and a polyamide resin layer, wherein the polyamide resin layer is laminated on one surface of the glass plate. The above-mentioned polyamide resin layer is obtained by coating the above-mentioned polyamide solution on a glass plate, and has a modulus of elasticity not higher than a specified value and a coefficient of linear expansion (CTE) exceeding a specified value. Still another aspect of the pr...
Claims
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IPC IPC(8): C08G69/32B32B17/10B32B27/34C08K5/00C08L77/10
CPCC03C17/32C08G69/32C09D177/10Y10T156/11Y10T428/266Y10T428/269Y10T428/31623
Inventor 法兰克·W·哈里斯张东孙立民景蛟凯楳田英雄川崎律也片山敏彦井上雄介冈田润井上美津穗内藤学
Owner AKRON POLYMER SYST