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Vinyl chloride resin composition for transparent article

By adding organic acid zinc salts, zinc-modified aluminum alkali magnesium compounds and phosphite compounds to vinyl chloride resins, the problems of traditional vinyl chloride resins decomposing under high temperatures and pressures and the environmental harm of heavy metal stabilizers are solved. , a vinyl chloride resin composition that achieves high transparency, thermal stability and stain resistance, and is suitable for a variety of industrial applications.

Active Publication Date: 2015-12-02
ADEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, tin is also not preferable from the viewpoint of influence on the environment and toxicity.
In addition, since most tin-based stabilizers are in a liquid state, when they are used, not only the slipperiness of the molten resin during molding processing will be reduced, but also the thermal deformation temperature of the molded body ( softening point) drop problem
[0008] In addition, in the case of using the aforementioned calcium-zinc, magnesium-zinc, calcium-magnesium-zinc and other stabilizers, there are often problems with coloring.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～21、 comparative example 1～3

[0133] After mixing the blends in the following Tables 1 to 3 with a Henschel mixer, under the conditions of 190°C x 30rpm (roller rotation speed) x 0.6mm (sheet thickness) x 3 minutes (kneading time) Next, roll kneading was performed to produce a sheet. The obtained sheet was placed in a 190° C. and 200° C. Gil furnace, and the blackening time (minutes) was measured as a thermal stability test. The results are shown in Tables 1-3.

[0134] On the other hand, the 0.6 mm thick sheet obtained above was opened, and pressed at 190° C. for 5 minutes to produce a 1 mm thick sheet; using these sheets, the transparency test, coloring resistance test. Moreover, the comparison test was performed similarly to the above about the comparative example which did not use (C)component. The results of the examples are shown in Tables 1 to 3, respectively, and the results of the comparative examples are shown in Table 1.

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Abstract

This vinyl chloride resin composition for a transparent article exhibits excellent transparency, thermal stability, and discoloration resistance, and is characterized by including, per 100 parts by mass of a vinyl chloride resin, 0.01-10 parts by mass of component (A), 0.01-10 parts by mass of component (B), and 0.01-3 parts by mass of component (C). Component (A) is at least one salt selected from among organic acid zinc salts. Component (B) is at least one compound selected from among zinc-modified hydrotalcite compounds. Component (C) is at least one compound selected from among phosphorous acid ester compounds.

Description

technical field [0001] The invention relates to a vinyl chloride resin composition suitable for use in transparent products, in particular to a vinyl chloride resin composition for transparent products that does not require the use of heavy metal stabilizers containing tin and other heavy metals. Background technique [0002] Vinyl chloride-based resins can be used in various applications because the hardness can be easily adjusted by adding a plasticizer. In particular, rigid vinyl chloride-based resin compositions containing no plasticizer at all or semi-rigid vinyl chloride resin compositions containing a small amount of plasticizer are widely used in building materials and the like because of their excellent rigidity. Therefore, it is needless to say that a rigid vinyl chloride resin composition not blended with a plasticizer at all, or a semi-rigid vinyl chloride resin composition blended with a small amount of a plasticizer, is processed under high temperature and high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K3/26C08K5/098C08K5/524C08K9/02
CPCC08K3/26C08K5/005C08K5/098C08K5/524C08K2003/267
Owner ADEKA CORP
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