Application of bipyridine ester phosphite to PVC heat stabilizer

A technology of dipyridyl phosphite and heat stabilizer, which is applied in the field of application of dipyridyl phosphite in PVC heat stabilizers, can solve the problem of poor anti-separation performance and auxiliary stability performance, which limits the wide application of liquid stabilizers, Obvious problems such as pressure segregation and blooming, to achieve the effect of improving initial coloring, excellent anti-separation, and improving uniformity

Active Publication Date: 2016-10-26
ZHEJIANG HIMPTON NEW MATERIAL
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Problems solved by technology

[0003] Due to the poor compatibility of metal soap and PVC resin in traditional liquid stabilizers, metal soap is continuously precipitated in the process of PVC calendering, and the precipitate is attached to the surface of the PVC film, which affects the printing, inkjet and transparency of the product; secondly At present, the liquid composite heat stabilizers mainly use fatty acid calcium salt and f

Method used

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  • Application of bipyridine ester phosphite to PVC heat stabilizer
  • Application of bipyridine ester phosphite to PVC heat stabilizer
  • Application of bipyridine ester phosphite to PVC heat stabilizer

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[0023] The technical solution of the present invention will be further specifically described below through specific examples.

[0024] The raw materials used in the examples are commercially available conventional raw materials.

[0025] Preparation of bipyridine phosphite:

[0026] Using 68.5g of phosphorus trichloride and 150g of 2-hydroxypyridine as raw materials, add phosphorus trichloride dropwise to 2-hydroxypyridine at a temperature of 65°C and a time of 100 minutes to obtain trihydroxypyridinyl phosphite. Add 20.5 g of phosphorous acid into the above product, and react at 120° C. for 60 minutes to obtain 98.5 g of dihydroxypyridinium phosphite.

[0027] The formula composition of the liquid barium zinc stabilizer of embodiment 1-4 is as follows table:

[0028]

[0029]

[0030] The composition of the zinc-based complex in Examples 1-4 is as follows, the following raw materials are mixed according to the proportion, and then the amount used in the formula of th...

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Abstract

The invention relates to the application of bipyridine ester phosphite to a PVC heat stabilizer. bipyridine ester phosphite can be applied to preparation of a liquid barium-zinc stabilizer, a liquid barium-cadmium-zinc stabilizer and a liquid calcium-zinc stabilizer. The liquid barium-zinc stabilizer is prepared from, by weight, 40-50 parts of barium isotanoate, 10-15 parts of zinc-based complex, 5-10 parts of bipyridine ester phosphite, 2-7 parts of 2-ethyl acetyl benzoyl methane, 1-10 parts of thiodipropionicacid dilauryl ester and 10-20 parts of tripropylene glycol n-butyl ether. The bipyridine ester phosphite compound has a higher anti-precipitation property than aliphatic or aromatic phosphite ester by means of a novel heterocyclic perssad replacing the aliphatic or aromatic perssad during preparation of the liquid barium-zinc stabilizer, the liquid barium-cadmium-zinc stabilizer and the liquid calcium-zinc stabilizer. By introducing nitrogen atoms to the heterocyclic ring, the auxiliary stabilization effect on phosphite ester is improved remarkably, and then the printing performance and stability of a modified PVC product are improved.

Description

technical field [0001] The invention relates to the application of dipyridyl phosphite in PVC heat stabilizers. Background technique [0002] Polyvinyl chloride (PVC) is the second largest plastic species next to polyethylene. It has high strength, excellent corrosion resistance and insulation. Its products are widely used in construction, electrical appliances, toys, packaging and other industries. However, PVC has its structural defects. It is unstable when heated and decomposes to release hydrogen chloride gas. The solution is to add heat stabilizers to PVC processing. Liquid compound stabilizer has been more and more widely used in soft PVC products because of its advantages of no dust pollution in the production and application process, convenient measurement and low price. [0003] Due to the poor compatibility of metal soap and PVC resin in traditional liquid stabilizers, metal soap is continuously precipitated during the PVC calendering process, and the precipitates...

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Application Information

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IPC IPC(8): C08L27/06C08K5/5393C08K5/00C08K5/098C08K5/06
CPCC08K5/00C08K5/06C08K5/098C08K5/5393C08L2201/08C08L27/06
Inventor 唐伟瞿英俊高尔金刘毓林陈建军廖永林
Owner ZHEJIANG HIMPTON NEW MATERIAL
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