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Modified polypropylene special resin and preparation method thereof

A polypropylene, terpene resin technology, applied in the direction of graft polymer adhesives, polyurea/polyurethane coatings, adhesive types, etc., can solve the problem of poor weather resistance, low polyolefin content, and poor coating adhesion. stability and other issues to achieve the effect of easy industrialization

Active Publication Date: 2012-10-24
SUZHOU XINGYE MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyolefin content in this type of resin is low, generally not more than 10%, and the resulting coating has unstable adhesion and poor weather resistance. Generally, it can only be used for low-grade polyolefin surface coating, and is not suitable for the main parts of the automotive industry. large scale painting

Method used

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  • Modified polypropylene special resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In a 1000ml four-necked bottle equipped with stirring, a thermometer, and a condenser tube, 150 g of chlorinated polypropylene (atactic body, chlorine content 30%) and 445 g of xylene were added, and the temperature was slowly raised to 50° C. to fully dissolve the material, and the temperature was raised to 100° C. ℃, add SBS 30g, methyl methacrylate 100g, cyclohexyl methacrylate 20g, terpene resin 3.5g, benzoyl peroxide 0.3g and 1.5GAIMW, stir and react for 10 hours. Cool down, filter and fill.

[0026] Add appropriate amount of alkyd resin, rutile titanium dioxide, calcium carbonate, superfine talcum powder, solvent, auxiliary agent, etc. to the obtained resin according to the formula in Table 1 (except modified chlorinated polyolefin resin, all other raw materials are Commercially available product), after high-speed dispersion and grinding to a fineness of less than 30 microns, after spraying and molding, after baking at 80°C for 2 hours, the performance of the pre...

Embodiment 2

[0030] Same as the method of Example 1, the difference is that chlorinated polypropylene (random body, chlorine content 30%) is changed into equal weight low molecular weight polypropylene wax.

Embodiment 3

[0032] In a 1000ml four-necked bottle equipped with stirring, a thermometer, and a condenser tube, 150 g of chlorinated polypropylene (atactic body, chlorine content 30%) and 420 g of xylene were added, and the temperature was slowly raised to 50° C. to fully dissolve the material, and the temperature was raised to 100 ℃, add SBS 30g, methyl methacrylate 80g, cyclohexyl methacrylate 20g, glycidyl methacrylate 20g, toluene 25g, terpene resin 3.5g and benzoyl peroxide 0.3g, benzoyl peroxide After 1.5 g, stir and react for 10 hours. Cool down, filter, and fill. The following operations are exactly the same as in Example 1. The obtained resin is poured into acetone to precipitate a white precipitate, which is filtered by suction and fully washed 3 times with acetone , after vacuum drying, obtain graft sample, its infrared spectrum (Shimadzu PTIR-8300 type Fourier Transform Infrared Spectroscopy). As can be seen, the absorption peak at 1714cm-1 is the acid anhydride peak of grafting...

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PUM

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Abstract

The present invention discloses a modified polypropylene special resin, which is characterized by mainly comprising the following components: chlorinated polyolefin, a butadiene rubber, a vinyl monomer, and a terpene resin, wherein a weight ratio is 1:0-0.5:0.1-2:0.003-0.15. According to the modified polypropylene special resin, a long chain of the chlorinated polyolefin is adopted as a skeleton, and a tertiary carbon position or a secondary carbon position on the chlorinated polyolefin is grafted with the vinyl monomer and / or the butadiene rubber or / and the terpene resin. The modified polypropylene special resin of the present invention has good adhesion and good boiling water resistance, and a preparation method for the resin is simple, and is easy to industrialize.

Description

technical field [0001] The invention relates to a modified synthetic resin which can be used for coatings and adhesives and a preparation method thereof, in particular to a modified polypropylene special resin and a preparation method thereof. Background technique [0002] Polyolefins are a common plastic material and account for the largest amount of plastic produced globally. With the rapid development of the automobile industry, new materials for automobiles are developing in the direction of light weight, intensification, and ecology. Polyolefin alloy materials have the advantages of excellent mechanical properties, easy molding, small specific gravity, low price and reusability. Typical automotive parts (bumpers, dashboards, interior parts, etc.) are widely using this type of new material. In order to meet this important change in the automotive industry, the surface coating of polyolefin materials needs to be changed and improved accordingly. Due to the low surface e...

Claims

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Application Information

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IPC IPC(8): C08F291/04C08F291/02C08F291/00C09D151/00C09D175/04C09J151/00
Inventor 王进兴刘慧朱文英王文浩
Owner SUZHOU XINGYE MATERIALS TECH
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