Acetylacetone based composite heat stabilizer

A technology of acetylacetone and metal compounds, applied in the preparation of aldehyde/ketone chelates, organic chemistry, etc., can solve the problems of poor coloring, poor long-term performance of zinc acetylacetonate, poor transparency, etc., and achieve the effect of improving thermal stability

Inactive Publication Date: 2009-08-19
BEIJING UNIV OF CHEM TECH
2 Cites 23 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to combine the advantages of good initial coloring performance of zinc acetylacetonate, good long-term performance of calcium acetylacetonate, good long-term performance of hydrotalcite, and good transparency, and utilize the synergistic effect between each other to overcome the long-t...
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Abstract

The invention provides an acetylacetone-based composite thermal stabilizer which is a mixture obtained by mixing zinc acetylacetonate, calcium acetylacetonate or magnesium acetylacetonate and hydrotalcite pro rata. The composite thermal stabilizer is suitable for chloride-containing high polymer, such as polyvinyl chloride, chlorinated polyethylene, chlorinated polyvinyl chloride, copolymer of vinyl chloride-ethylene or copolymer of vinyl chloride-vinyl acetate, has better thermal stability, prolongs the thermal aging time of the chloride-containing high polymer, and overcomes the shortcomings of poor long-term performance of single stabilizer of zinc acetylacetonate, poor transparency of stabilizer of calcium acetylacetonate, and poor initial colorability of stabilizer of hydrotalcite. The composite thermal stabilizer has low cost, good initial colorability, excellent long-term performance and good transparency, and is an efficient composite thermal stabilizer.

Application Domain

Preparation of aldehyde/ketone chelates

Technology Topic

AcetylacetoneMagnesium +16

Examples

  • Experimental program(9)
  • Comparison scheme(2)

Example Embodiment

[0021] Example 1.
[0022] Zinc acetylacetonate, calcium acetylacetonate, Mg 3 ZnAL 2 (CO 3 ) 2H 2 O hydrotalcites were mixed according to the mass percentage of 4%, 21% and 75% respectively to obtain a composite heat stabilizer. Add 4 parts by mass of composite heat stabilizer to 100 parts of PVC, and then add 50 parts of diisooctyl phthalate (DOP), and mix on SSR-Z4 plastic testing machine at 140 ° C for 10 minutes, at 160 ° C It was pressed into a sheet with a thickness of 1 mm and cut into a test piece of 1 cm × 1 cm. The test piece was placed in a thermal aging test chamber at 200±1°C to carry out a static aging test, and the time when the test piece started and the black decomposition point appeared was set as the thermal stability time. The results are shown in Table 1.

Example Embodiment

[0023] Example 2
[0024] Zinc acetylacetonate, calcium acetylacetonate, Mg 3 ZnAL 2 (CO 3 ) 2H 2 O hydrotalcite was mixed at the mass percentage of 10%, 39% and 51% respectively to obtain a composite heat stabilizer. Add 4 parts by mass of composite heat stabilizer to 100 parts of PVC, and then add 50 parts of diisooctyl phthalate (DOP), and mix on SSR-Z4 plastic testing machine at 140 ° C for 10 minutes, at 160 ° C It was pressed into a sheet with a thickness of 1 mm and cut into a test piece of 1 cm × 1 cm. The test piece was placed in a thermal aging test chamber at 200±1°C to carry out a static aging test, and the time when the test piece started and the black decomposition point appeared was set as the thermal stability time. The results are shown in Table 1.

Example Embodiment

[0025] Example 3
[0026] Zinc acetylacetonate, calcium acetylacetonate, Mg 3 ZnAL 2 (CO 3 ) 2H 2 O hydrotalcites were mixed according to the mass percentages of 16%, 51% and 33% respectively to obtain a composite heat stabilizer. Add 4 parts by mass of composite heat stabilizer to 100 parts of PVC, and then add 50 parts of diisooctyl phthalate (DOP), and mix on SSR-Z4 plastic testing machine at 140 ° C for 10 minutes, at 160 ° C It was pressed into a sheet with a thickness of 1 mm and cut into a test piece of 1 cm × 1 cm. The test piece was placed in a thermal aging test chamber at 200±1°C to carry out a static aging test, and the time when the test piece started and the black decomposition point appeared was set as the thermal stability time. The results are shown in Table 1.

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Description & Claims & Application Information

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