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A kind of urea grease/biuret-based liquid potassium zinc foaming stabilizer for PVC and preparation method thereof

A foaming stabilizer and biuret technology, which is applied in the field of PVC urea grease/biuret-based liquid potassium-zinc-catalyzed foaming stabilizer and its preparation field, achieves smooth and smooth surface of the product, broad market value and good fluidity Effect

Active Publication Date: 2019-02-26
ZHEJIANG TRANSFAR WHYYON CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to cooperate with its foaming principle, the domestic mainstream uses an environmentally friendly liquid potassium-zinc foaming agent, but most of them contain a large amount of solvents, and most of the organic acids used come from petroleum resources

Method used

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  • A kind of urea grease/biuret-based liquid potassium zinc foaming stabilizer for PVC and preparation method thereof
  • A kind of urea grease/biuret-based liquid potassium zinc foaming stabilizer for PVC and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) The first step, the raw material components used are: diethylene glycol 325kg, oleic acid 337kg, isooctanoic acid 165kg, urea 302kg; Used catalyst is sodium carbonate, accounts for 3% of aforementioned raw material total amount. The reaction was maintained at a pressure of 0.4-0.6 MPa, stirred and heated up to 140° C., and the reaction state was maintained for 2 hours. Cool after the reaction, adjust the pH value to 7, and obtain a urea ester / biuret-based emulsion.

[0044] (2) In the second step, the raw material components used are: diethylene glycol 100kg, diethylene glycol monobutyl ether 62kg, isooctanoic acid 355kg, oleic acid 49kg, potassium hydroxide 22kg, zinc oxide 110kg. The reaction was maintained at normal pressure, stirred and heated to 80°C, kept for 1 hour, and then heated to 130°C for negative pressure dehydration. Cool after the reaction to obtain a potassium salt / zinc salt solution.

[0045](3) In the third step, the raw material components used...

Embodiment 2

[0047] The raw material components used for the compounding of the stabilizer are: 221 kg of the urea grease / biuret-based emulsion obtained in the first step of Example 1, 272 kg of the potassium salt / zinc salt solution obtained in the second step of Example 1, adding dibenzoylmethane 24kg, diphosphite bisphenol A four C 12-15 Ester 33kg. Mix and stir under normal pressure, and raise the temperature to 100°C. After the solution is transparent and clear, it can cool down to 60°C, and filter to obtain a light yellow transparent liquid, which is urea grease / biuret group liquid potassium zinc for PVC foaming stability agent.

Embodiment 3

[0049] (1) The first step, the raw material components used are: dearomatized hydrocarbon solvent oil D100, 328kg, oleic acid 300kg, isooctanoic acid 114kg, urea 188kg, the catalyst used is potassium dihydrogen phosphate and accounts for 5% of the aforementioned raw material total amount %. The reaction was maintained at a pressure of 0.5-0.8 MPa, stirred and heated up to 140° C., and the reaction state was maintained for 2 hours. Cool after the reaction, adjust the pH value to 7, and obtain a urea ester / biuret-based emulsion.

[0050] (2) In the second step, the raw material components used are: 55kg of diethylene glycol monobutyl ether, 370kg of isooctanoic acid, 50kg of oleic acid, and 125kg of zinc oxide. The reaction was maintained at normal pressure and heated to 90 °C.

[0051] (3) In the third step, in the solution of the reaction to 90° C. in the second step, the raw material components that are added successively are 310 kg of urea fat / biuret-based emulsion obtaine...

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Abstract

The invention discloses a urea grease / biuret-based liquid zinc potassium sparkle stabilizer for PVC (Polyvinyl Chloride) and a preparation method thereof. A currently main used environmentally-friendly liquid zinc potassium foaming agent mostly contains a lot of solvent, and most of the used organic acids are from petroleum resources. The stabilizer provided by the invention is prepared from the following components: 30 to 50 percent of urea grease / biuret-based emulsion, 40 to 50 percent of potassium salt / zinc salt solution, 0 to 5 percent of antioxidant, 0 to 5 percent of beta-diketone, and 0 to 10 percent of phosphite ester; the urea grease / biuret-based emulsion is prepared from the following components: 20 to 30 percent of urea, 5 to 20 percent of isocaprylic acid, 10 to 40 percent of oleic acid, 1 to 5 percent of catalyst, and 30 to 50 percent of solvent; and the potassium salt / zinc salt solution is prepared from the following components: 0 to 15 percent of potassium hydroxide, 15 to 25 percent of zinc compound, 25 to 60 percent of isocaprylic acid, 5 to 10 percent of oleic acid, and 10 to 40 percent of solvent. The stabilizer provided by the invention has the characteristic of enabling a PVC product to be excellent in heat stability, high in foaming ratio and delicate and compact in foaming holes.

Description

technical field [0001] The invention relates to a stabilizer for foaming by using an AC foaming agent in PVC, in particular to a urea fat / biuret-based liquid potassium-zinc foaming stabilizer for PVC and a preparation method thereof. Background technique [0002] PVC (polyvinyl chloride) is the second largest synthetic resin after PE (polyethylene) in the world. It is widely used in construction, transportation, communication, electronics, chemical industry, machinery and fast moving consumer goods and other industries. In the production process, the usual temperature of PVC processing and molding is above 160°C, however, its decomposition temperature is 120°C, which brings great difficulty to the processing. Therefore, heat stabilizers need to be added to PVC formulations to increase heat stability during processing. [0003] At present, there are many kinds of stabilizers on the market, mainly including lead salt stabilizers, calcium zinc stabilizers, and organic tin stab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K5/00C08K5/21C08K5/07C08K5/526C08K13/02C08J9/10
CPCC08J9/103C08J2203/04C08J2327/06C08K5/00C08K5/07C08K5/21C08K5/526C08K13/02C08L2203/14C08L27/06
Inventor 丁礼源陈旻童敏伟程媛媛
Owner ZHEJIANG TRANSFAR WHYYON CHEM
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