Ultraviolet absorber for synthetic resin and synthetic resin composition containing the same

A synthetic resin, ultraviolet technology, applied in the direction of composition, organic chemistry, other chemical processes that inhibit chemical changes, etc., can solve the problems of turbidity, transparency, whitening, etc.

Inactive Publication Date: 2005-11-09
ADEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, polyolefin-based resins have problems suc

Method used

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  • Ultraviolet absorber for synthetic resin and synthetic resin composition containing the same
  • Ultraviolet absorber for synthetic resin and synthetic resin composition containing the same
  • Ultraviolet absorber for synthetic resin and synthetic resin composition containing the same

Examples

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Embodiment

[0114] Hereinafter, the present invention will be described in more detail through production examples, examples, and comparative examples. However, the present invention is not limited in any way by these Examples and the like.

Synthetic example

[0116] Synthesis of intermediate compounds

[0117] In the reaction flask, 141 grams of benzamidine hydrochloride and 99.0 grams of resorcinol benzoate were dissolved in 580 grams of ethanol, 175 grams of methanol solution of 28% by mass sodium methoxide was added, and the mixture was heated at 78°C while stirring. Methanol was removed. After stirring at 78°C for 20 hours, it was cooled to 5°C, and the precipitated solid phase was collected by filtration. The resulting solid phase was washed with methanol and water to obtain 55.2 g of intermediate 2-(2,4-trihydroxyphenyl)-4,6-diphenyl-1,3,5-tri Zine (yield 38%).

[0118]Add 51.0 grams of 2-(2,4-trihydroxyphenyl)-4,6-diphenyl-1,3,5-triazine, 284 grams of 2-bromoethanol, 255 grams of dimethylformamide, then dripped 87.6 grams of 48 mass % sodium hydroxide aqueous solution at 85°C, reacted at 85°C for 10 hours, cooled to 5°C, and then added dropwise at a temperature below 5°C hydrochloric acid, neutralized to pH 7-6, filtered...

manufacture example 1

[0120] Synthesis of Compound No.1

[0121] In the reaction flask replaced by nitrogen, 2.58 grams of cyclohexanecarboxylic acid, 50 grams of xylene, and 0.10 grams of p-toluenesulfonic acid were added to 7.94 grams of the intermediate compound obtained in the above synthesis example, and the mixture was heated at 140 ° C. Dehydration and reflux for 10 hours. Wash with water until the pH value in the system is 7, filter the solid phase after filtration, then add methanol to precipitate crystals, and use xylene / methanol (1 / 3) solvent to recrystallize the crude crystals obtained after filtration to obtain Pale yellow crystals were obtained in a yield of 81%. The obtained crystals were analyzed as follows, and it was confirmed that the crystals were the target compound, that is, Compound No. 1.

[0122] ① Infrared (IR) analysis (cm-1): 3440 (hydroxyl), 2925, 2850 (cyclohexyl), 1725 (ester), 1535, 1510 (triazinyl), 1165 (ether).

[0123] ② Elemental analysis (mass%): carbon; 72....

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Abstract

The present invention relates to an ultraviolet absorber for synthetic resins composed of a triazine compound represented by the general formula (I) shown below (wherein R represents an alkyl group having 1 to 4 carbon atoms, n is 0 or an integer of up to 2, and X represents a group selected from the consisting of group (a) to (d) shown below) (wherein R<1> represents an aliphatic group having 5 to 60 carbon atoms, which is an alicyclic group, an alkyl group having an alicyclic group at the terminal or in the chain thereof, an alkyl group having a branch, or a linear alkyl group, depending on the number of carbon atoms; R<2> represents an alkyl group having 1 to 18 carbon atoms or a (poly)alkyleneoxyalkyl group; R' represents an aliphatic diyl group having 5 to 60 carbon atoms; R and n have the same meanings as those described in the general formula (I) above).

Description

technical field [0001] The present invention relates to an ultraviolet absorber for synthetic resin comprising a triazine compound having a specific structure and having good compatibility with synthetic resin, and a synthetic resin composition containing the ultraviolet absorber. technical background [0002] Polyolefin resins such as polyethylene and polypropylene; polycarbonate resins; polyester resins such as polyethylene terephthalate and polybutylene terephthalate; polystyrene, butadiene- Styrene resins such as styrene, ABS (acrylonitrile-butadiene-styrene copolymer), ACS (acrylonitrile-vinyl chloride-styrene copolymer); polyamide resins such as nylon; polyvinyl chloride, polystyrene Synthetic resins such as ether and polymethyl methacrylate are widely used in various fields as various molded objects, fibers, films, coatings, and other materials. [0003] However, it is well known that molded articles synthesized only from the above-mentioned synthetic resins suffer f...

Claims

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Application Information

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IPC IPC(8): C07D251/24C08K5/17C08K5/3492C08L23/00C08L67/00C08L69/00C08L101/00C09K3/00C09K15/30
CPCC07D251/24C08K5/3492
Inventor 根岸由典飞田悦男绫部敬士
Owner ADEKA CORP
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