Polyester resin composition, preparation method and application thereof

A technology of polyester resin and composition, which is applied in the field of polyester resin composition and its preparation, and can solve the problems of polluting the environment, impracticability, and low flame retardant efficiency

Pending Publication Date: 2021-03-12
GUANGDONG GUANGSHAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, the flame retardant efficiency of inorganic flame retardants such as aluminum hydroxide and graphite is low, and a large amount of addition is required to achieve a good flame retardant effect, but the addition of a large amount of inorganic fillers will affect the mechanical properties of the material ; Although flame retardant materials containing bromine and other halogens have excellent flame retardant properties, they will produce dioxins and other difficult-to-degrade products when burned, causing serious environmental pollution and endangering human health; Although the combustion products will not cause environmental pollution, their molecules, decomposition products or water-soluble substances will Enter the environment and pollute the environment, so it is impossible to achieve a truly environmentally friendly flame retardant

Method used

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  • Polyester resin composition, preparation method and application thereof
  • Polyester resin composition, preparation method and application thereof
  • Polyester resin composition, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0112] A reactive phosphorus-containing flame retardant with a carboxyl group, the structure is as follows:

[0113]

[0114] The preparation method is as follows:

[0115] (1) Add 0.5mol dimethyl hydroxymethyl phosphite, 0.5mol 3-[(2-hydroxyethyl)amino]propanol, 100mL ethanol, 0.05mol sodium hydroxide and 0.05g DMAP into the reaction kettle, and heat up Return to ethanol, react under stirring for 24 hours, wash with water until neutral after the reaction, and obtain an aqueous solution of the hydroxyl product;

[0116] (2) Add 30g of potassium permanganate to a 500mL beaker, adjust the pH to 9.8 with NaOH, place the potassium permanganate solution in an ultrasonic cleaner (set temperature at 45°C, ultrasonic power at 100W), and then Add the aqueous solution of the hydroxyl product obtained in step (1) dropwise to the potassium permanganate solution in the environment, and keep the reaction temperature at about 45° C.; when the reaction temperature begins to drop, heat the...

preparation example 2

[0119]A reactive phosphorus-containing flame retardant with a carboxyl group, the structure is as follows:

[0120]

[0121] The preparation method is as follows:

[0122] Add 1 mol of dimethyl phosphite and 0.5 mol of hexadienedioic acid into the reactor, stir and mix well in 300 mL of glacial acetic acid at 60°C under the protection of nitrogen; then add 1 mmol of platinum catalyst in glacial acetic acid solution dropwise into the reactor The reaction was continued at 60°C for 15 h; the product was isolated and purified to obtain the target product with the above structure.

[0123] 1 H NMR (DMSO, 400MHz, TMS): δ11.91-12.42(br,2H,-COOH),3.55-3.76(d,12H,-CH 3 ),3.11-3.59(d,2H,-CH-),1.46-1.78(d,4H,-CH 2 -).

preparation example 3

[0125] A reactive phosphorus-containing flame retardant with a carboxyl group, the structure is as follows:

[0126]

[0127] The preparation method is as follows:

[0128] Add 1 mol of dimethyl phosphite and 1 mol of 5-vinyl isophthalic acid into the reactor, stir and mix well in 300 mL of glacial acetic acid at 65°C under nitrogen protection; then add 1 mmol of glacial acetic acid with platinum catalyst dropwise into the reactor Solution, continue to react at 65°C for 12h; separate and purify the product to obtain the target product with the above structure.

[0129] 1 H NMR (DMSO, 400MHz, TMS): δ12.19-12.87(br,2H,-COOH),7.87-8.05(m,3H,Pr-H),3.31-3.72(d,6H,-CH 3 ),2.71-3.05(m,1H,-CH-),1.31-1.52(d,3H,-CH 3 ).

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Abstract

The invention provides a polyester resin composition, a preparation method and application thereof. The polyester resin composition is prepared from polyol, polybasic acid and/or anhydride, a reactivephosphorus-containing flame retardant, an esterification catalyst, a curing agent and a curing catalyst, wherein the reactive phosphorus-containing flame retardant has a structure shown in a formulaI or a formula II, and contains carboxyl or anhydride reaction groups. According to the invention, the reactive phosphorus-containing flame retardant is used as a reaction monomer to participate in esterification reaction of polyester resin synthesis, and finally exists in a polyester resin composition in the form of molecular chain segments, so that the phenomena of micromolecule precipitation, water dissolution or hydrolysis are avoided, and efficient and stable environment-friendly flame retardance is truly realized; and the polyester resin composition provided by the invention has excellent flame retardant property, mechanical property and chemical resistance, the preparation process is simple, the raw materials are easy to obtain, and the polyester resin composition has a wide industrial application prospect.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a polyester resin composition and its preparation method and application. Background technique [0002] Polyester resin is a general term for polymer compounds formed by polycondensation of polyols and polybasic acids. It is divided into saturated polyester resins and unsaturated polyester resins. Among them, the synthetic raw materials of saturated polyester resins do not contain benzene rings. other unsaturated bonds. The polymer structure of polyester resin contains rigid chain segments such as aromatic groups and flexible chain segments such as linear alkyl groups. The three-dimensional network structure formed after curing has good toughness and hardness balance. Materials and other fields have a very wide range of applications. With the rapid development of the material field in recent years, the synthesis process of polyester resin has become increa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/692C09D167/00C09D5/18C09D11/104
CPCC08G63/6924C09D167/00C09D5/18C09D11/104
Inventor 潘庆崇
Owner GUANGDONG GUANGSHAN NEW MATERIALS CO LTD
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