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Poly(alkene carbonate) diol-polybutylene succinate copolymer and preparation method thereof

A technology of polybutylene succinate and polybutylene succinate, applied in the field of preparation of aliphatic polybutylene carbonate diol-polybutylene succinate copolymer, the copolyester , can solve problems such as brittleness, and achieve the effect of simplifying the process operation

Inactive Publication Date: 2010-06-16
徐玉华 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PBS material has high crystallinity, which leads to the brittleness of the material during storage at room temperature, which limits the application of PBS as a general-purpose plastic. It is particularly necessary to adjust and control the new PBS material

Method used

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  • Poly(alkene carbonate) diol-polybutylene succinate copolymer and preparation method thereof
  • Poly(alkene carbonate) diol-polybutylene succinate copolymer and preparation method thereof
  • Poly(alkene carbonate) diol-polybutylene succinate copolymer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] First, a total of 1000 g of 1,4-butanediol and succinic acid with a molar ratio of 1.35:1 were added to a stainless steel reaction kettle, then 0.1 g of stannous chloride was added, and the temperature was raised to 180° C. under the protection of nitrogen, and the esterification 5 hours; evacuate to remove unreacted butanediol, add 0.1 g of titanium tetraisopropoxide, and react for 8 hours at 180° C. and 16 Pa of vacuum to obtain polybutylene succinate oligomer.

[0021] The polyethylene carbonate diol and polybutylene succinate oligomer that total amount is 1000g is added in the stainless steel reactor, the polyethylene carbonate diol that adds and polybutylene succinate oligomer The mass ratio of the compound is 1: 1000; then add 200g of zinc acetate to carry out the melt co-condensation reaction, the reaction temperature is 210°C, and react for 2 hours under the condition of 300Pa to obtain polyethylene carbonate diol-polybutylene succinate ester polymer. The NMR s...

Embodiment 2

[0023] First, a total of 1000 g of 1,4-butanediol and succinic acid with a molar ratio of 1.35:1 were added to a stainless steel reaction kettle, then 0.1 g of stannous chloride was added, and the temperature was raised to 220° C. under the protection of nitrogen for esterification. 4 hours; evacuate to remove unreacted butanediol, add 0.1 g of titanium tetraisopropoxide, and react for 6 hours at 220° C. and 15 Pa of vacuum to obtain a polybutylene succinate oligomer.

[0024] The polypropylene carbonate diol and polybutylene succinate oligomer that total amount is 1000g is added in the stainless steel reactor, the polypropylene carbonate diol that adds and polybutylene succinate oligomer The mass ratio of the compound is 1: 500; add 0.1g methanesulfonic acid again, carry out melt polycondensation reaction, reaction temperature is 200 ℃, react under 200Pa condition for 10 hours to obtain polypropylene carbonate diol-polybutylene succinate Glycol ester polymer.

Embodiment 3

[0026] First, a total of 1000 g of 1,4-butanediol and succinic acid with a molar ratio of 1.35:1 were added to a stainless steel reaction kettle, and then 0.5 g of stannous chloride was added, and the temperature was raised to 200° C. under the protection of nitrogen, and the esterification 3 hours; vacuumize to remove unreacted butanediol, add 0.5g titanium tetraisopropoxide, and react for 5 hours at 190°C and 16Pa vacuum conditions to obtain polybutylene succinate oligomer;

[0027] A total amount of polybutylene carbonate diol and polybutylene succinate oligomer that is 1000g is added in the stainless steel reactor, the polybutylene carbonate diol that adds and polybutylene succinate oligomer The mass ratio is 1:100; then add 100g of tetrabutyl titanate to carry out melt co-condensation reaction, the reaction temperature is 180°C, and react under 100Pa for 20 hours to obtain polybutylene carbonate diol-polybutylene succinate ester polymer.

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Abstract

The invention relates to a poly(alkene carbonate) diol-polybutylene succinate copolymer and a preparation method thereof. The copolymer is formed by randomly copolyesterifying 6 to 120 poly(alkene carbonate) diol molecules and 5 to 180 polybutylene succinate molecules. The preparation method adopts a direct melt polycondensation method, and comprises the steps of: esterifying 1, 4-butanediol, butane diacid and stannous chloride in a reaction kettle first, and then adding titanium tetraisopropylate into the reaction kettle to react for 1 to 8 hours to obtain a polybutylene succinate oligomer; and performing a melt copolycondensation reaction on a reactant, the polybutylene succinate oligomer and a catalyst to obtain a poly(alkene carbonate) diol-polybutylene succinate random copolymer, wherein the reactant is poly(ethylene carbonate) diol, poly(propylene carbonate) diol or poly(butylene carbonate) diol. The method simplifies process operation, and can adjust the block length of a final product and the molecular weight of the copolymer by controlling the molecular weight and the adding amount of the poly(alkene carbonate) diol to obtain copolyesters with different performances.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to an aliphatic polycarbonate diol-polybutylene succinate copolymer, and also relates to a preparation method of the copolyester. Background technique [0002] A large amount of carbon dioxide emissions are threatening life on the entire earth. The most effective solution is to collect carbon dioxide and make it into useful materials to achieve the goal of killing two birds with one stone. Polyethylene carbonate is exactly in this situation generated below. Polyethylene carbonate is a polymer material polymerized by carbon dioxide and epoxy compounds. Among them, aliphatic polyglycol carbonate has good biodegradability, and this type of polyester generally has good low temperature Flexibility, gas barrier and transparency make it useful as a carrier for drug sustained-release systems, film packaging materials, solid electrolytes, surface treatment of inorganic fillers, etc....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/64C08G63/16
Inventor 徐玉华沈金海
Owner 徐玉华
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