Hydrotalcite and lanthanum ricinoleate composite environmental-protection stabilizer for PVC and preparation method thereof

A technology of lanthanum ricinoleate and an environmentally friendly stabilizer, which is applied in the field of PVC additives, can solve the problems of not being able to be the main stabilizer alone, low thermal stability, and poor colorability, and achieve improved thermal stability, low cost, and improved stability. sexual effect

Inactive Publication Date: 2016-02-03
HWASU
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rare earth heat stabilizers have good thermal stability, but the early thermal stability is not high, and the initial coloring is poor, so they cannot be the main stabilizer alone, so their application and promotion are limited. The application of a single rare earth heat stabilizer is often difficult to meet the needs of PVC processing. Composite and multi-functional rare earth heat stabilizers have become the development trend according to the requirements of application performance

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] A PVC hydrotalcite lanthanum ricinoleate composite environmental stabilizer, which is prepared from the following components by weight (kg): modified magnesium aluminum hydrotalcite 26, tin dilaurate 12, lanthanum ricinoleate 6, phosphoric acid Triethyl Ester 2, Barium Stearate 5, Epoxidized Soybean Oil 3, Propylene Glycol Sebacate 12, Zinc Stearate 6, 4-Benzoyloxy-2,2,6,6-Tetramethyl Piperidine 3, ethylene bis stearamide 3, potassium feldspar powder 13,

[0018] The preparation method is as follows:

[0019] (1) Preparation of modified hydrotalcite:

[0020] a. Add a certain amount of Mg(NO3)2·6H2O and Al(NO3)3·9H2O into water to form a salt solution with a total molar concentration of 0.6mol / L, and add a certain amount of NaOH and Na2CO3 into deionized water to form The total molar concentration is 0.6mol / L alkali solution, drop the alkali solution into the salt solution at a speed of 1-2 drops / s, N 2 Stir vigorously under protection, keep the constant temperature ...

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Abstract

The invention provides a hydrotalcite and lanthanum ricinoleate composite environmental-protection stabilizer for PVC. The hydrotalcite and lanthanum ricinoleate composite environmental-protection stabilizer for PVC is prepared from the following raw materials (by weight): 20-30 parts of modified Mg-Al hydrotalcite, 10-12 parts of tin dilaurate, 6-9 parts of lanthanum ricinoleate, 1-3 parts of triethyl phosphate, 3-6 parts of barium stearate, 2-4 parts of epoxidized soybean oil, 10-13 parts of propanediol sebacate polyester, 5-6 parts of zinc stearate, 2-4 parts of 4-benzoyloxy-2,2,6,6-tetramethylpiperidine, 2-4 parts of ethylene bis-stearamide and 10-14 parts of potassium feldspar powder. The PVC stabilizer of the invention has good heat stability and processability, is environmentally-friendly, nontoxic and low-cost, has good plasticity during processing of PVC, can reduce balance torque and has good transparency.

Description

technical field [0001] The invention relates to the field of PVC additives, in particular to a PVC hydrotalcite lanthanum ricinoleate composite environmental-friendly stabilizer and a preparation method thereof. Background technique [0002] With its superior physical properties and low cost, PVC is widely used in chemical industry, materials, machinery, agriculture, daily necessities and other fields, especially in the field of plastics, and is known as one of the five general-purpose plastics. However, PVC has a very important defect, that is, it is easy to decompose and generate HCl gas during thermal processing, and self-catalysis leads to severe degradation of PVC, which affects various properties of PVC products, such as discoloring PVC products or reducing its mechanical properties. In order to overcome this defect of PVC, it is mainly to add an appropriate amount of stabilizer during the thermal processing of PVC. [0003] The only heat stabilizers that are generall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/00C08L91/00C08L67/02C08K13/06C08K9/04C08K3/26C08K5/098C08K5/521
Inventor 王圣茂丘永桂宋开生高旭李毅徐明肖独山孙荣兴
Owner HWASU
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