Light diffusivity resin composition, moulding article and light conductor
A technology of resin composition and light diffusivity, which is applied in the field of light guides, can solve problems such as difficult to achieve both, and achieve the effect of excellent balance, excellent molding processability and high temperature stability
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preparation example Construction
[0214] The method for preparing the light-diffusing resin composition, that is, the method for blending the cyclic olefin-based resin (A) and the particles (B) is not particularly limited, and they can be mixed by a known method. For example:
[0215] (1) A method in which the above-mentioned resin composition is obtained by removing the solvent by a known method after dispersing the particles (B) in a state where the cyclic olefin-based resin (A) is dissolved in a soluble solvent;
[0216] (2) A method of dispersing the particles (B) in a state where the cyclic olefin resin (A) is melted, or the like.
[0217] In the production method of (1) above, as the solution containing the cyclic olefin-based resin (A), a solution after polymerization, a solution after hydrogenation, a solution after removal of the catalyst, a solution after concentration, and a solution in which particulate rings are dissolved can be used. A solution of the olefin-based resin (A), etc.
[0218]In add...
Embodiment
[0265] The present invention is illustrated by examples below, but the present invention is not limited by these examples. It should be noted that the following "parts" and "%" mean "parts by weight" and "% by weight" unless otherwise specified.
[0266] In addition, various physical properties were measured by the following methods.
[0267] (Intrinsic viscosity: η inh )
[0268] Using chloroform as a solvent, a sample having a polymer concentration of 0.5 g / dl was prepared and measured with an Ubbelohde viscometer at 30°C.
[0269] (molecular weight)
[0270] Gel permeation chromatography (GPC, column: TSKgel G7000HXL×1, TSKgel GMHXL×2 and TSKgelG2000HXL×1 manufactured by Tosoh Co., Ltd. in series) was used in tetrahydrofuran (THF) solvent. The measurement was performed to obtain the weight average molecular weight (Mw) and molecular weight distribution (Mw / Mn) in terms of polystyrene. In addition, Mn represents the number average molecular weight in terms of polystyren...
Synthetic example 1
[0294] 8-methyl-8-methoxycarbonyltetracyclo[4.4.0.1 as a cyclic olefin 2，5 .1 7，10 250 parts of ]-3-dodecene, 41 parts of 1-hexene as a molecular weight modifier, and 750 parts of toluene as a solvent for ring-opening polymerization reaction were charged into a nitrogen-substituted reaction vessel, and the solution was heated to 60°C . Then in the solution in the reaction vessel, add 0.62 parts of toluene solution (concentration 1.5 mol / L) of triethylaluminum, tungsten hexachloride modified with tert-butanol / methanol (tert-butanol: methanol: tungsten=0.35 mole : 0.3 mol: 1 mol) of toluene solution (concentration 0.05 mol / L) 3.7 parts, this solution was heated and stirred at 80° C. for 3 hours to carry out ring-opening polymerization reaction to obtain a solution containing ring-opened polymer.
[0295] The polymerization conversion rate of this polymerization reaction was 97%.
[0296] 4,000 parts of the ring-opened polymer solution obtained as above were charged into an au...
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