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Resin composition

A resin composition and resin technology, applied in the field of resin composition, can solve problems such as low transparency, low compatibility of blended resins, complicated process, etc., and achieve easy control, excellent transparency and heat resistance, and easy manufacture Effect

Inactive Publication Date: 2008-05-14
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the former lacks uniformity in optical properties, and when the compatibility of the blended resin is low, there are problems such as low transparency, and the latter has the problem that the actual process becomes complicated due to graft copolymerization.

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0102] The present invention will be described in detail based on examples, but the present invention is not limited to these examples. In addition, the respective measurement methods of the physical properties measured in the following Examples and Comparative Examples are as follows.

[0103] (1) Determination of imidization rate

[0104] The product pellets were used as they were, and the IR spectrum was measured at room temperature using TravelIR manufactured by SensIR Technologies. According to the spectrum obtained, from 1720cm -1 The absorption intensity attributable to the ester carbonyl and the 1660cm -1 The ratio of the absorption intensity assigned to the imide carbonyl group was used to obtain the imidization rate. Here, the imidation ratio means the ratio of imide carbonyl groups to all carbonyl groups.

[0105] (2) Styrene content

[0106] Dissolve 10 mg of the product in CDCl 3 1 g, measured at room temperature using an NMR measuring device Gemini-300 man...

manufacture example 1

[0116] An imide resin was produced using a commercially available methacrylic resin (Sumitomo Chemical Industries, Ltd., SumipexMH) and monomethylamine as an imidation agent. The extruder used was a bite-type co-rotating twin-screw extruder with a diameter of 40 mm. The methacrylic resin was supplied at 20 kg / hr under the conditions of a set temperature of 270° C. and a screw rotation speed of 200 rpm in each temperature control zone of the extruder, and the supply amount of monomethylamine was 25 wt. per methacrylic resin. share. A methacrylic resin was charged from a hopper, and after the resin was melted and filled with a kneading block, monomethylamine was injected from a nozzle. Install a gasket at the end of the reaction zone to keep the resin filled. The vent pressure was reduced to -0.09MPa to volatilize the by-products and excess methylamine after the reaction. The resin extruded in filament form from a die installed at the exit of the extruder was cooled in a wate...

manufacture example 2

[0121] In the same manner as in Production Example 1, an imide resin was produced using a methyl methacrylate-styrene copolymer (22% by weight of St content) and monomethylamine as an imidating agent. Under the conditions of setting temperature of 270°C in each temperature control area of ​​the extruder and screw rotation speed of 200rpm, polymethyl methacrylate-styrene copolymer was supplied at 20kg / hr, and the supply amount of monomethylamine was relative to that of polymethylamine. 20 parts by weight of methyl acrylate-styrene copolymer.

[0122] Table 1 shows the imidization rate, glass transition temperature, and styrene content of the obtained imide resin (b).

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PUM

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Abstract

Disclosed is a resin composition wherein birefringence is controlled. Specifically disclosed is a resin composition essentially containing a resin (A) containing a glutarimide unit and an acrylate unit, and another resin (B) containing a glutarimide unit, an acrylate unit and an aromatic vinyl unit. This resin composition can be easily produced at low cost, and is excellent in transparency and heat resistance. In particular, orientational birefringence can be easily controlled in this resin composition. This resin composition can be used for molded bodies for optical applications which require transparency and heat resistance.

Description

technical field [0001] The present invention relates to a resin composition, and more specifically, to a resin composition characterized by controlled birefringence. Background technique [0002] In recent years, electronic devices have been miniaturized, and they have been used for various purposes by taking advantage of their light weight and small size, as typified by notebook computers, mobile phones, and PDAs. On the other hand, in the field of flat panel displays such as liquid crystal displays and plasma displays, it is also required to suppress the increase in weight accompanying the enlargement of the screen. [0003] In applications requiring transparency represented by electronic devices as described above, it is becoming more and more popular to convert parts that have conventionally used glass to resins with good transparency. [0004] Various transparent resins represented by polymethyl methacrylate have good moldability and processability, are not easy to bre...

Claims

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Application Information

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IPC IPC(8): C08L33/06C08F8/48
Inventor 田中克幸川端裕辅日色知树
Owner KANEKA CORP
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