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Polyol or polythiol compound, preparation method therefor, transparent polyurethane-based resin prepared therefrom, and optical body

A technology for polythiol compounds and polyol compounds, which can be used in thiol preparation, thioether preparation, optics, etc., and can solve problems such as inability to ensure the preparation of polythiol compounds.

Active Publication Date: 2021-09-10
KS LABORATORIES CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the invention of this patent document has various problems in that the preparation of the desired polythiol compound cannot be ensured in the examples disclosing the preparation of the polythiol intermediate compound from the polyol intermediate compound

Method used

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  • Polyol or polythiol compound, preparation method therefor, transparent polyurethane-based resin prepared therefrom, and optical body
  • Polyol or polythiol compound, preparation method therefor, transparent polyurethane-based resin prepared therefrom, and optical body
  • Polyol or polythiol compound, preparation method therefor, transparent polyurethane-based resin prepared therefrom, and optical body

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preparation example Construction

[0124]In the preparation of polythiol compounds, it was confirmed that after the preparation of thioether intermediate compounds by reacting each of the above-mentioned polyol intermediate compounds with thiourea / hydrochloric acid, Rearrange to prepare intermediate compounds. After hydrolysis of the intermediate compound, primary polythiols can be obtained as resulting compounds. Due to the structural analysis performed on the polythiol prepared by the method according to the present invention, it can be confirmed that the primary thiol compound was prepared together with the secondary polythiol as the main product. Therefore, it can be confirmed that the polythiol composition prepared by the method according to the present invention consists of a mixture of isomers. The table below shows the theoretically possible isomers.

[0125] (1) Isomers of compound 10 (GPT) and compound 11 (MPT)

[0126]

[0127] (2) Isomers of compound 12 (BPT)

[0128]

[0129] Common names...

preparation example 1

[0176] Preparation Example 1: 1-Chloro-3-((2-hydroxypropyl)thio)propan-2-ol [Compound 1]

[0177] 500 grams (5.43 moles) of 1-mercaptopropan-2-ol (Aldrich) and 54.9 grams of triethylamine were placed in the reactor. Subsequently, with the temperature of the reactor set at 15° C., 502 g (5.43 mol) of epichlorohydrin was slowly added dropwise to the solution, whereby 1,002 g of Compound 1 was prepared. according to figure 1 According to the NMR-data, the compound has the following chemical properties: 1 H-NMR (D 2 O), δ ppm =1.26(3H,d,CH 3 ), 2.66 to 2.90 (4H, m, CH 2 -S), 3.70 to 3.82 (2H, m, CH 2 -Cl).

preparation example 2

[0178] Preparation Example 2: 2-((3-Chloro-2-hydroxypropyl)thio)propan-1-ol [Compound 2]

[0179] 500 grams (5.43 moles) of 1-mercaptopropan-2-ol and 55.0 grams of triethylamine were placed in the reactor. Subsequently, with the temperature of the reactor set at 15° C., 502 g (5.43 mol) of epichlorohydrin was slowly added dropwise to the solution, thereby preparing 1,002 g of Compound 2. According to NMR-data, the compound has the following chemical properties: 1 H-NMR (D 2 O), δ ppm =1.25(3H,d,CH 3 ), 2.66 to 2.90 (4H, m, CH 2 -S), 3.65 to 3.82 (2H, m, CH 2 -Cl).

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Abstract

The present invention relates to a novel polyol or polythiol having three or more functional groups, a preparation method therefor, and an optical body manufactured therefrom. Especially, the presentinvention relates to a poly(thio)urethane-based resin and an optical body, such as lenses, manufactured using the resin, wherein the poly(thio)urethane-based resin is prepared by obtaining a novel polyol and then combining a polythiol, which is prepared from the obtained polyol, with a polyiso(thio)cyanate.

Description

[0001] This invention is an invention patent filed on February 13, 2018 with the application number 201880011987.3 and the invention name is "polyol or polythiol compound, its preparation method, transparent urethane resin and optical body prepared therefrom" Divisional application of the application. technical field [0002] The present invention relates to a novel polyol or polythiol, a method for preparing said polyol or polythiol, and a polyurethane resin prepared therefrom. Specifically, the present invention relates to an optical body formed from a poly(thio)urethane resin prepared by reacting a novel polythiol with a polyiso(thio)cyanate compound. Formate resin. Background technique [0003] In recent years, resins for plastic lenses are required to have further improved properties, as well as high refractive index, high Abbe's number, low specific gravity, high heat resistance, and the like. Currently, various resins for plastic lenses have been developed and used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C323/12C07C319/14C07C321/14C07C319/20C08G18/38C08L75/04G02B1/04
CPCC07C323/12C07C319/14C07C321/14C07C319/20C08G18/3876C08L75/04G02B1/041B29D11/00C07C321/04C08G18/7642C08G18/7831C08G18/755C08G18/758C08G18/752C08L81/00C07C323/03C07C319/08C08G18/3855C08G18/72G02B1/04G02C7/02B29K2075/00C08G18/38
Inventor 金根植
Owner KS LABORATORIES CO LTD
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