Film-grade polypropylene coloring master batch and preparation method thereof

A technology of coloring masterbatch and polypropylene, which is applied in the field of film-grade polypropylene coloring masterbatch and its preparation, which can solve the problems of complex process, high cost, poor control of color difference, etc., and achieve simple process, low production cost, and coloring uniform effect

Pending Publication Date: 2022-03-18
江阴市得宝新材料科技有限公司
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing production process, most of the masterbatches use twin-screw extruders. This preparation process is generally suitable for low-concentration pigment dispersion. When the pigment content in the masterbatch is higher than 50% and it is used for film coloring, it is easy to cause poor pigment dispersion. The light transmittance is unstable, and the color difference is not easy to control, etc.
[0003] Invention patent CN109265829A discloses a preparation method of PP color mast

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
  • Film-grade polypropylene coloring master batch and preparation method thereof
  • Film-grade polypropylene coloring master batch and preparation method thereof
  • Film-grade polypropylene coloring master batch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] The preparation method of embodiment 1-5 film grade polypropylene coloring masterbatch is:

[0030] S1: Feed all materials into the mixer through an intelligent loss-in-weight weighing scale (1300Kg / h);

[0031] S2: The temperature of the material port of the mixing machine is controlled to be 110-115 °C, and the temperature of the mixing chamber area is controlled to be 205-215 °C, and the mixing is carried out at a rotational speed of 600 rpm by double rotors to obtain a highly dispersed molten mixture;

[0032] S3: The mixed molten mixture is extruded through a twin-screw extruder, the temperature of the front section of the extruder is controlled to be 195-200 °C, the temperature of the rear section is controlled to be 225-230 °C, the temperature of the die head is controlled to be 220-230 °C, and the melting temperature is controlled to 220-230 °C. Body temperature kept at 225 ~ 227 ℃ extrusion;

[0033] S4: After the extruded high-dispersion molten mixture is pas...

Example Embodiment

[0035] S2 of Example 6: the temperature of the material port of the mixer is controlled to be 100-105°C, the temperature of the mixing chamber area is controlled to be 190-195°C, and the double-rotor rotating speed is 550rpm for mixing to obtain a highly dispersed molten mixture;

Example Embodiment

[0036] S2 of Example 7: the temperature of the material port of the mixer is controlled to be 115 to 120°C, the temperature of the mixing chamber is controlled to be 210 to 220°C, and the double rotor speed is 500 rpm for mixing to obtain a highly dispersed molten mixture;

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

No PUM Login to view more

Abstract

The invention discloses a film-grade polypropylene coloring master batch, which is prepared from the following main raw material components in percentage by mass: 28 to 43 percent of isotactic homo-polypropylene, 55 to 70 percent of inorganic pigment, 0.2 to 1.05 percent of dispersing agent and 0.5 to 1.8 percent of weather-resistant agent. The content of the coloring pigment in the formula system of the film-grade polypropylene coloring master batch is high, but the coloring pigment is well dispersed in the film-grade polypropylene coloring master batch, the coloring is uniform, and the color difference is low; the whiteness, the color difference value, the weather resistance and the moisture content of the film-grade polypropylene coloring master batch all meet the product standards of the film-grade polypropylene coloring master batch. The invention further discloses a preparation method of the film-grade polypropylene coloring master batch, continuous mixing and extrusion operation of a double-rotor continuous mixing mill is adopted, the technological process is simple, the production cost is low, and the preparation method is suitable for batch production.

Description

technical field [0001] The invention relates to the technical field of color masterbatch production, in particular to a film-grade polypropylene color masterbatch and a preparation method. Background technique [0002] Polypropylene is widely used in packaging, electronic appliances, medical supplies and other fields. It is a thermoplastic resin with a wide range of uses. Most of the food plastic packaging is polypropylene plastic products. In the existing production process, most of the masterbatches use twin-screw extruders. This preparation process is generally suitable for low-concentration pigment dispersion. When the pigment content in the masterbatch is higher than 50% and it is used for film coloring, it is easy to cause poor pigment dispersion. The light transmittance is unstable, and the color difference is not well controlled. [0003] Invention patent CN109265829A discloses a preparation method of PP color masterbatch, which uses random polypropylene as the carr...

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
IPC IPC(8): C08L23/12C08K3/22C08J3/22
CPCC08J3/226C08J2423/12C08K2003/2241
Inventor 林元贤王先平李海林张涛
Owner 江阴市得宝新材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap