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Process for producing molded object of curable resin and molded cured resin

A curable resin and a technology for a manufacturing method, which are used in the manufacture of curable resin molded bodies and the fields of cured resin molded bodies, can solve the problem of poor releasability, confusion of fine concavo-convex shapes in curable resin molded bodies, and inability to sufficiently transfer concave-convex shapes and other problems, to achieve the effect of suppressing the reduction of transferability and mold releasability

Inactive Publication Date: 2008-02-20
ZEON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, polycarbonate or polymethacrylate has been used as the resin material of the above-mentioned resin mold for curable resin. Since the resin mold will be deformed due to humidity and reaction heat during curing, there are curable resin molds. There is a problem that the fine concave-convex shape of the body is confused; when the resin mold for curable resin is released from the cured resin molded body, the mold release property between the resin mold for curable resin and the cured resin molded body is poor, so especially for thin For large and large cured resin molded products, there are also problems that the cured resin molded product is easily damaged, and the uneven shape cannot be sufficiently transferred.

Method used

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  • Process for producing molded object of curable resin and molded cured resin
  • Process for producing molded object of curable resin and molded cured resin
  • Process for producing molded object of curable resin and molded cured resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0180] Hereafter, although an Example and a comparative example demonstrate this invention in more detail, this invention is not limited to an Example.

[0181] In addition, in the following examples, unless otherwise specified, parts and % are based on weight, and pressure is gauge pressure.

[0182] In the following production examples and examples, the measurement methods of various physical properties are as follows.

[0183] [Weight average molecular weight (Mw)]

[0184] It is measured by gel permeation chromatography (GPC) using cyclohexane as a solvent, and is a value obtained in terms of polyisoprene.

[0185] [Hydrogenation rate (%) of main chain and hydrogenation rate of aromatic ring (nuclear hydrogenation rate (%))]

[0186] pass 1 H-NMR determination.

[0187] [Glass transition temperature (Tg(°C))]

[0188] It measures according to JIS-K 7121 using a differential scanning calorimeter under the condition of a temperature increase rate of 10° C. / min.

[0189...

manufacture example 1

[0207] Under a nitrogen atmosphere, in a reactor at room temperature, after adding 0.82 parts of 1-hexene, 0.15 parts of dibutyl ether and 0.30 parts of triisobutylaluminum to 500 parts of dehydrated cyclohexane and mixing them, the temperature was maintained at 45 ℃, 170 parts tricyclic [4.3.0.1 2，5 ] deca-3,7-diene (common name: dicyclopentadiene, hereinafter referred to as "DCP"), 30 parts of 8-ethyl-tetracyclo[4.4.0.1 2，5 .1 7，10 ] Dodec-3-ene (hereinafter abbreviated as "ETCD") and 80 parts of tungsten hexachloride (0.7% toluene solution) were continuously added over 2 hours to polymerize. Next, 1.06 parts of butyl glycidyl ether and 0.52 parts of isopropanol were added to the polymerization solution to deactivate the polymerization catalyst and stop the polymerization reaction. When the obtained reaction solution containing the DCP / ETCD ring-opened copolymer was analyzed by gas chromatography, the polymerization conversion rate of each monomer was 99.5%.

[0208] Next...

manufacture example 2-1

[0211] To 100 parts of the alicyclic structure-containing polymer (particle PM) obtained in Production Example 1, 0.05 part of soft polymer (manufactured by Asahi Kasei Co., Ltd., Toughtec H1052) and 0.3 part of 1,6-hexyl Diol bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] (manufactured by Ciba-Geigy, Irganox 259), with a twin-shaft mixer (manufactured by Toshiba Machinery Co., Ltd. TEM- 35B, screw diameter 37mm, L / D=32, screw rotation speed 250rpm, resin temperature 240°C, filling rate 10kg / hour) kneading and extrusion to obtain pellets P1 of the resin composition. The glass transition temperature of the particle P1 is 100°C.

[0212] The obtained pellets P1 were molded using the resin molding apparatus shown in FIG. 6 to obtain five resin molds S1 (diameter 120 mm, thickness 0.6 mm) for curable resin having the structure shown in FIG. 1 .

[0213]The resin molding device shown in FIG. 6 is a thermoplastic resin including an air-carrier type resin delivery device (not...

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Abstract

A process for producing a molded object of a curable resin. In the process, transferability and mold releasability are kept intact. Also provided is a cured resin molding obtained by the process. The process for producing a molding of a curable resin comprises the following steps: (i) a resin die for curable resins obtained by molding a resin composition comprising a polymer having an alicyclic structure and a hindered phenol compound is used to form a first cured-resin molding, (ii) the resin die for curable resins which has been used for the molding is heated for 30 seconds to 100 hours at a temperature lower by 5-60 DEG C than the glass transition temperature of the resin composition, and (iii) the resin die heated is used to form a second cured-resin molding.

Description

technical field [0001] The present invention relates to a method for producing a curable resin molded body, and a cured resin molded body obtained by the method. More specifically, the present invention relates to a method of manufacturing a molded article by reusing a resin mold for a curable resin that does not degrade transferability and releasability, and a cured resin molded article obtained by the method. Background technique [0002] As a sheet-like or plate-like resin for easily manufacturing compact disks, lenticular lenses, LEDs, Fresnel lenses, prism sheets, and light guide plates As a method for the molded article, a method of filling a resin mold with a curable resin such as acrylate, and then irradiating, for example, ultraviolet rays to cure the curable resin to obtain a cured resin molded article can be used. [0003] At present, polycarbonate or polymethacrylate has been used as the resin material of the above-mentioned resin mold for curable resin. Since t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C39/38B29K45/00B29C33/38B29K101/10G11B7/24B29L11/00G11B7/26B29L17/00
CPCB29C2043/025B29C43/50B29C2043/5061B29C33/424G11B7/26B29L2017/005B29C2043/3652B29C43/021B29L2011/00B29C33/40
Inventor 高桥治彦栗原竜太
Owner ZEON CORP
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