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Polyester block copolymer as well as preparation method and application thereof

A polyester block and copolymer technology, which is applied in the field of polyester block copolymer and its preparation, can solve problems such as inability to absorb moisture, harsh environmental requirements, and other performance effects of materials, and achieve excellent low-temperature resistance and low-temperature impact The effect of good sex and low tension

Active Publication Date: 2019-04-02
NANTONG XINGCHEN SYNTHETIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of the aforementioned patents mentioned copolymers containing polysilane, but did not address the low temperature resistance and hydrophobic properties of the material
Simultaneously, described patent CN102382307A has only researched and formed polycarbonate copolymer with phosgene reaction; Described patent US4927895A adopts polysilane and polyester terminal reaction of epoxy group terminal to obtain copolymer, and this material is to environmental requirement It is harsh and cannot absorb moisture, which seriously affects its use; the described patents US5132392A and US4894427A use hydroxyl-terminated polysilanes for copolymerization to obtain new polymers, which improve hydrophilic properties and hydrolysis resistance. One-step polymerization, the difference in the reaction rate of polysilane and diol leads to uneven distribution of polysilane in the copolymer, and other properties of the material are affected, so the low temperature resistance of the obtained polymer is not mentioned in the article and hydrophobic properties
In summary, in the open literature, no public reports that can solve the low-temperature resistance and hydrophobic properties of the above-mentioned polyester materials have been found.

Method used

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  • Polyester block copolymer as well as preparation method and application thereof
  • Polyester block copolymer as well as preparation method and application thereof
  • Polyester block copolymer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Embodiment 1 contains the preparation of the PBT copolyester of silicon unit

[0081] Slurry preparation: 1) Put terephthalic acid (PTA) and 1,4-butanediol (BDO) into the slurry preparation tank U1 respectively through the metering system, stir evenly, and record it as slurry S1, wherein PTA is 773G (G The meaning is the mass unit gram, the same below), and BDO is 520G. 2) Put α, ω-dicarboxyethyl polydimethylsiloxane and 1,4 butanediol (BDO) into the slurry preparation tank U2 respectively through the metering system, stir evenly, and record it as slurry S2, where α , ω-dicarboxyethyl polydimethylsiloxane is 210G, 1,4 butanediol (BDO) is 30G.

[0082] Catalyst preparation: Add 1,4-butanediol (BDO) 100G and catalyst C (tetrabutyl titanate) 158.9G into the preparation tank U3, heat and boil in a vacuum state for 2-3 hours, the vacuum degree is 20-30KPa, The temperature is 180°C. After cooling down, the prepared catalyst is transferred into the catalyst feeding tank.

...

Embodiment 2

[0091] The preparation of the PBT copolyester that embodiment 2 contains silicon unit

[0092] Slurry preparation: 1) Put terephthalic acid (PTA) and 1,4-butanediol (BDO) into the slurry preparation tank U1 respectively through the metering system, stir evenly, and record it as slurry S1, wherein PTA is 773G, BDO It is 520G. 2) Put α, ω-dicarboxyethyl polydimethylsiloxane and 1,4 butanediol (BDO) into the slurry preparation tank U2 respectively through the metering system, stir evenly, and record it as slurry S2, where α , ω-dicarboxyethyl polydimethylsiloxane is 300G, 1,4 butanediol (BDO) is 45G.

[0093] Catalyst preparation: Add 1,4-butanediol (BDO) 100G and catalyst C (tetrabutyl titanate) 158.9G into the preparation tank U3, heat and boil in a vacuum state for 2-3 hours, the vacuum degree is 20-30KPa, The temperature is 180°C. After cooling down, the prepared catalyst is transferred into the catalyst feeding tank.

[0094] Esterification reaction: The slurry S1 in the ...

Embodiment 3

[0102] The preparation of embodiment 3 containing the PBT copolyester of silicon unit

[0103] Slurry preparation: 1) Put terephthalic acid (PTA) and 1,4-butanediol (BDO) into the slurry preparation tank U1 respectively through the metering system, stir evenly, and record it as slurry S1, wherein PTA is 773G, BDO It is 520G. 2) Put α, ω-dicarboxyethyl polydimethylsiloxane and 1,4 butanediol (BDO) into the slurry preparation tank U2 respectively through the metering system, stir evenly, and record it as slurry S2, where α , ω-dicarboxyethyl polydimethylsiloxane is 420G, 1,4 butanediol (BDO) is 60G.

[0104] Catalyst preparation: Add 1,4-butanediol (BDO) 100G and catalyst C (tetrabutyl titanate) 158.9G into the preparation tank U3, heat and boil in a vacuum state for 2-3 hours, the vacuum degree is 20-30KPa, The temperature is 180°C. After cooling down, the prepared catalyst is transferred into the catalyst feeding tank.

[0105] Esterification reaction: The slurry S1 in the ...

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Abstract

The invention discloses a polyester block copolymer which is characterized in that the structure of the polyester block copolymer is shown in the specification formula (I), and the invention also discloses a preparation method of the polyester block copolymer. According to the method, a silicon-containing unit is polymerized into a polyester molecular chain by a copolymerization method, and the obtained copolymer has excellent low-temperature resistance and relatively low surface tension, so that the characteristic that the polyester resin is not resistant to low temperature is improved, and application spaces of the polyester block copolymer in fiber, films, blow molding and engineering plastics are expanded. The formula (I) is An-Bt.

Description

technical field [0001] The invention belongs to the technical field of polymer synthetic materials, and in particular relates to a polyester block copolymer with cold resistance and hydrophobicity and a preparation method thereof. Background technique [0002] With the development of society and the advancement of science and technology, the demand for materials is expanding day by day, and the production and application of polymer synthetic materials have also developed rapidly. Among them, the application of engineering plastics in various fields is also expanding year by year. Polyester material, as one of the five major engineering plastics, mainly refers to PBT, the Chinese name is polybutylene terephthalate, which is a semi-crystalline thermoplastic resin, because of its high modulus, high strength, high elasticity and heat resistance, etc. Advantages, mainly used in electronic appliances, automobiles, lighting, machinery, spinning, communication, thin film and instru...

Claims

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Application Information

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IPC IPC(8): C08G77/445C08G77/38C08G63/183C08L83/10
CPCC08G63/183C08G77/38C08G77/445C08L83/10C08L2203/10C08L2203/12C08L2203/16C08G63/695
Inventor 崔晓文汪永斌庞小琳姚君黄华胥保礼戴伍国
Owner NANTONG XINGCHEN SYNTHETIC MATERIAL
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