Supercharge Your Innovation With Domain-Expert AI Agents!

A kind of rare earth polypropylene stiffening nucleating agent and preparation method thereof

The technology of polypropylene and nucleating agent is applied in the field of rare earth polypropylene stiffening nucleating agent and its preparation, which can solve the problems of high low temperature brittleness, poor compatibility between inorganic powder and polypropylene resin, and low thermal deformation temperature. , to achieve the effect of improving bending performance, good dispersion effect and simple process

Active Publication Date: 2019-03-01
柳州炜林纳新材料科技有限责任公司
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polypropylene also has many disadvantages, such as high low temperature brittleness, low heat distortion temperature, slow crystallization rate, etc. These defects limit the application of polypropylene to a certain extent.
However, due to the poor compatibility between inorganic powder and polypropylene resin, the transparency and gloss of the product are not greatly improved, which limits its application.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of rare earth polypropylene stiffening nucleating agent and preparation method thereof
  • A kind of rare earth polypropylene stiffening nucleating agent and preparation method thereof
  • A kind of rare earth polypropylene stiffening nucleating agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Glycine and phthalic anhydride were weighed at a molar ratio of 1:1.1, fully ground in a mortar, mixed evenly, transferred to a three-necked flask, stirred and melted in an oil bath at 135°C for 1 hour, and transferred after the reaction. recrystallization, suction filtration, and vacuum drying to obtain phthalylglycine;

[0036] Then weigh a certain amount of phthaloylglycine, add an appropriate amount of ethanol and water to dissolve it, adjust the pH to 6 with sodium hydroxide, transfer it to a three-necked bottle, and slowly add an aqueous solution of lanthanum nitrate dropwise while stirring in a water bath at 50°C (The molar ratio of lanthanum nitrate to phthalylglycine is 1:3), react for 4 hours, cool to room temperature, filter the product with suction, wash, and vacuum-dry to constant weight to obtain lanthanum phthalylglycinate as polypropylene Just nucleating agent.

Embodiment 2

[0038] Weigh 3-aminopropionic acid and phthalic anhydride at a molar ratio of 1:1.2, grind them thoroughly in a mortar, mix them evenly, transfer them to a three-necked flask, and stir and melt them in an oil bath at 140°C for 1 hour. The obtained product was transferred, recrystallized, suction filtered, and vacuum-dried to obtain 3-(phthalimido)propionic acid;

[0039] Then weigh a certain mass of 3-(phthalimido)propionic acid, add appropriate amount of ethanol and water to dissolve, adjust the pH to 7 with sodium hydroxide, transfer it to a three-necked flask, and stir in a water bath at 50°C Slowly add aqueous solution of lanthanum chloride dropwise (the molar ratio of lanthanum chloride to 3-(phthalimido)propionic acid is 1:3.5), react for 4 hours, cool to room temperature, filter the product with suction, wash and dry in vacuum To constant weight, 3-(phthalimido) lanthanum propionate was obtained as a stiffening nucleating agent for polypropylene.

Embodiment 3

[0041] Weigh γ-aminobutyric acid and phthalic anhydride at a molar ratio of 1:1.2, grind them thoroughly in a mortar, mix them evenly, transfer them to a three-necked flask, and stir and melt them in an oil bath at 145°C for 2 hours. After the reaction, the obtained Product transfer, recrystallization, suction filtration, and vacuum drying to obtain phthalamide butyric acid;

[0042] Then weigh a certain amount of phthaloyl aminobutyric acid, add an appropriate amount of methanol and acetone to dissolve, adjust the pH to 6 with triethylamine, transfer it to a three-necked flask, and slowly add chlorinated Cerium ethanol solution (the molar ratio of cerium chloride to phthalamide butyric acid is 1:3.5), react for 4 hours, cool to room temperature, filter the product with suction, wash, and vacuum dry to constant weight to obtain phthalamide Cerium butyrate acts as a stiffening nucleating agent for polypropylene.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of nucleating agents, and discloses a rare-earth polypropylene stiffening nucleating agent. The polypropylene stiffening nucleating agent mainly comprises a compound shown as a formula I and rare earth salt, wherein in the formula I, n is an integer from 0 to 20, R is one of the following four groups: hydrogen, benzyl, alkyl and a carboxyl / hydroxyl / halogen-containing group, D is an any substituent, m is an integer from 1 to 4, and when m is greater than 2, more than 2 Ds are the same or different; the molar ratio of the compound shown as the formula I to the rare earth salt is (2-4): 1; the rare earth salt is at least one of nitrates, chlorides and perchlorates of lanthanum, cerium, neodymium and yttrium. The invention further discloses a preparation method of the polypropylene stiffening nucleating agent. After the polypropylene stiffening nucleating agent provided by the invention is added into polypropylene, the bending performance, the heat distortion temperature and the crystallization rate of a polypropylene product can be significantly improved.

Description

technical field [0001] The invention belongs to the field of nucleating agents, and in particular relates to a rare-earth polypropylene stiffening nucleating agent and a preparation method thereof. Background technique [0002] As one of the five general-purpose plastics, polypropylene has the advantages of low cost, non-toxic and harmless, and easy to process and shape. It plays an important role in people's lives, such as medical appliances, automotive electrical appliances, building materials, pipe packaging, etc. . However, polypropylene also has many disadvantages, such as high low temperature brittleness, low heat distortion temperature, slow crystallization rate, etc. These defects limit the application of polypropylene to a certain extent. Adding a nucleating agent to the polypropylene resin can provide a large number of crystal nuclei during the crystallization process, so that the spherulites formed when the melt is cooled are arranged densely and regularly, and t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08K5/3417C07D209/46
CPCC07D209/46C08K5/3417C08L2201/08C08L2205/24C08L23/12
Inventor 郑德卢永军刘曙东陈俊黄文辉
Owner 柳州炜林纳新材料科技有限责任公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More