Optical film
A technology of optical film and protective film, applied in the field of optical film, which can solve the problems of reduced beam transmittance, difficulty in maintaining aging stability, and high cost of light-diffusing film
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0076]
[0077] Examples of the production method of the light-transmitting particles used in the present invention include suspension polymerization, emulsion polymerization, soap-free emulsion polymerization, dispersion polymerization, and seed polymerization, and the light-transmitting particles can be produced by any of the methods. These production methods can be referred to, for example, in Takayuki Ohtsu and Masaetus Kinoshita, Kobunshi Gosei no Jikken Ho (Experimental Technique for the Synthesis of Polymer ), page 130 and pages 146-147; Kagaku Dojin Sha, Gosei Kobunshi (Synthetic Polymer) , Vol.1, pp.246-290, Cit , Vol.3, pp.1-108; US Pat. -5-297506, JP-A-2002-145919, JP-A-2003-147039 and JP-A-2003-171432 described methods.
[0078] In the preparation methods of melamine resin particles, benzoguanamine-melamine formaldehyde particles, etc., amino resins that are not sufficiently cured, that is, low-condensation amino resins, sometimes remain as impurities aft...
Embodiment 1
[0504] The average particle diameter of the organic resin particles is measured as follows.
[0505] The 50% volume diameter (median diameter) obtained by a laser diffraction / scattering particle size distribution measuring instrument [Master Sizer 2000 (trade name), manufactured by Malvern Instruments Ltd.] was used as the average particle diameter.
[0506] The layer thickness measurements for the shells are as follows.
[0507] The epoxy resin for embedding, the particles of the present invention and the curing agent were loaded into the embedding plate and mixed thoroughly, and the mixture was cured overnight in an oven at 60°C. The cured product was sectioned with an ultramicrotome [ULTRACUT N (trade name, manufactured by Reichert-Nissen)], and the particle flakes were imaged with a transmission electron microscope (TEM). The actual layer thickness of the shell is measured on TEM pictures.
[0508] [refractive index]
[0509] The refractive index can be measured by the ...
Embodiment 2
[0625] (Synthesis of amino resin particles 4)
[0626] In a four-necked flask, 75 parts of melamine, 75 parts of benzoguanamine, 238 parts of 37% formaldehyde and 1.07 parts of 10% aqueous sodium carbonate were added to obtain a mixture. While stirring the mixture, the polymerization was carried out by raising the temperature to 85° C. to obtain an initial condensate having a water compatibility of 250%. Separately, 6 parts of nonionic surfactant EMULGEN 430 (manufactured by Kao Corp., polyoxyethylene oleyl ether) was dissolved in 2,455 parts of water, and the temperature of the surfactant aqueous solution was raised to 50°C, followed by stirring. The initial condensate obtained above was added to the aqueous surfactant solution under stirring to obtain an emulsion of the initial condensate. After adding thereto 90 parts of a 5% aqueous solution of dodecylbenzenesulfonic acid, the emulsion was condensed and cured by keeping at 50-60° C. for 3 hours to obtain an emulsion of a ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
| mean roughness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More