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Polyurethane copolymerization transparent nylon and preparation method thereof

A technology of polyarylate and copolymerization, applied in the field of polymers, can solve the problems affecting the mechanical properties such as modulus of products, heat resistance, low content of transparent nylon crystal region, high raw material cost, etc., and achieve the improvement of glass transition temperature Tg and Rigidity, increase light transmittance, reduce water absorption effect

Inactive Publication Date: 2019-03-22
ZHONGLUN PLASTIC IND FUJIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But conventional transparent nylon monomers, such as 4,4'-diamino-dicyclohexylhexane, 4,4'-diamino-3,3'-dimethyldicyclohexylmethane, trimethyl-1, 6-Hexamethylenediamine, etc., are all small varieties of chemical monomers, the cost of raw materials is high, and the supply of goods is unstable. Moreover, the obtained transparent nylon has low crystal content and high water absorption, which affects the mechanical properties such as modulus and heat resistance of the product. performance, which also limits its large-scale application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) 11.4g of bisphenol A, 9.0g of sodium hydroxide, 5.8g of hexamethylenediamine, 0.2g of cetyltrimethylammonium bromide, and 200mL of water were added to a three-necked flask equipped with a stirrer and a thermometer, Stir to dissolve it to form a colorless transparent aqueous solution A.

[0046] Dissolve 10.1 g of terephthaloyl dichloride and 10.1 g of isophthaloyl dichloride in 200 mL of dichloromethane to obtain a transparent oil solution B.

[0047] (2) Under the condition of stirring (750rpm), the oil solution B was slowly dropped into the aqueous solution A over 0.5h, and reacted at 10°C for 2.5h. 1000mL methanol solution was quickly poured into the reaction system under vigorous stirring conditions (750rpm) for precipitation, and the reaction solvent water, dichloromethane and precipitant methanol were removed by vacuum filtration using a Buchner funnel, and the precipitate was separated by 1wt% NaOH aqueous solution , 1wt% HCl aqueous solution and distilled w...

Embodiment 2

[0050] (1) Add 17.1g of bisphenol A, 9.0g of sodium hydroxide, 2.2g of butanediamine, 0.5g of phenyltrimethylammonium chloride, 0.5g of tetrabutylammonium bromide, and 150mL of water into a mixer equipped with In a three-necked flask with a thermometer, stir to dissolve it to form a colorless transparent aqueous solution A.

[0051] Dissolve 15.2 g of terephthaloyl chloride and 5.1 g of isophthaloyl chloride in 100 mL of 1,2-dichloroethane to obtain a transparent oil solution B.

[0052] (2) Under the condition of stirring (1200rpm), the oil solution B was slowly dropped into the aqueous solution A over 0.2h, and reacted at 30°C for 0.5h. Pour 150mL of diethyl ether solution into the reaction system under vigorous stirring conditions (1200rpm) for precipitation, use a Buchner funnel to vacuum filter to remove the reaction solvent water, 1,2-dichloroethane and precipitant diethyl ether, separate the precipitates Wash with 0.05wt% NaOH aqueous solution, 0.05wt% HCl aqueous solu...

Embodiment 3

[0055] (1) Add 5.7g of bisphenol A, 9.0g of sodium hydroxide, 8.7g of 2-methylpentanediamine, 0.04g of benzyltrimethylammonium chloride, and 50mL of water into a three-necked flask equipped with a stirrer and a thermometer , stirred to dissolve to form a colorless transparent aqueous solution A.

[0056] Dissolve 5.1 g of terephthaloyl chloride and 15.2 g of isophthaloyl chloride in 70 mL of carbon tetrachloride to obtain a transparent oil solution B.

[0057] (2) Under the condition of stirring (600rpm), the oil solution B was slowly dropped into the aqueous solution A over 1 hour, and reacted at 10°C for 3 hours. 700mL of acetone solution was quickly poured into the reaction system under vigorous stirring conditions (600rpm) for precipitation, and the reaction solvent water, carbon tetrachloride and precipitant acetone were removed by vacuum filtration using a Buchner funnel, and the precipitate was separated using 5wt% NaOH Wash with aqueous solution, 5wt% HCl aqueous solu...

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Abstract

The invention belongs to the field of polymers, and particularly relates to a polyurethane copolymerization transparent nylon and a preparation method thereof. The preparation method for the polyurethane copolymerization transparent nylon comprises the following steps: (1) dissolving bisphenol A, diamine, alkali and organic quaternary ammonium salt in water to obtain an aqueous solution A; dissolving aromatic benzenedicarbonyl chloride in an organic solvent to obtain an oil solution B; (2) under a stirring condition, adding the oil solution B into the aqueous solution A, and reacting at a temperature of 10-30 DEG C for 0.5-3 h to obtain a reaction product which contains the polyurethane copolymerization transparent nylon. The polyurethane copolymerization transparent nylon prepared by themethod provided by the invention has the advantages of high transparency, relatively high glass transition temperature Tg, low water absorption, high modulus, good product heat resistance, good stresscracking resistance, good solvent resistance and excellent self lubrication performance and friction coefficient, and can meet varied requirements of different fields on required polymer product performance.

Description

technical field [0001] The invention belongs to the field of polymers, and in particular relates to a polyarylate copolymerized transparent nylon and a preparation method thereof. Background technique [0002] Polycarbonate (referred to as PC) refers to a high molecular polymer containing carbonate groups in the molecular chain. According to the structure of the ester group, it can be divided into aliphatic, aromatic, aliphatic-aromatic polycarbonate and other types. Among them, due to the low mechanical properties of aliphatic and aliphatic-aromatic polycarbonate, which limits its application in engineering plastics, only bisphenol A aromatic polycarbonate has been industrialized, and bisphenol A Type polycarbonate is odorless, tasteless, non-toxic, transparent, has excellent comprehensive properties, especially excellent impact resistance, and has become the fastest growing general engineering plastic among the five major engineering plastics. However, bisphenol A aromati...

Claims

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Application Information

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IPC IPC(8): C08G69/44
CPCC08G69/44
Inventor 简锦炽康杰周志威
Owner ZHONGLUN PLASTIC IND FUJIAN
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