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Delta-fatty acyl gluconate, preparation method thereof and PVC heat stabilizer

A technology of fatty acyl gluconate and thermal stabilizer, applied in the field of PVC thermal stability, can solve the problems of low thermal stability of PVC

Active Publication Date: 2019-08-09
CANTON SONECAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a kind of δ-fatty acyl gluconate and preparation method thereof, and PVC heat stabilizer, to solve the problem that after the PVC heat stabilizer with hard zinc and hard calcium as the main stabilizer is added to PVC, The technical problem of low thermal stability of PVC

Method used

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  • Delta-fatty acyl gluconate, preparation method thereof and PVC heat stabilizer
  • Delta-fatty acyl gluconate, preparation method thereof and PVC heat stabilizer
  • Delta-fatty acyl gluconate, preparation method thereof and PVC heat stabilizer

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Preparation of δ-zinc stearyl gluconate: Weigh 0.56mol (100g) of δ-glucolactone and a slight excess (slightly excess than 0.56mol) of stearic acid, add a catalytic amount of hydrochloric acid, and control the temperature at 80°C to 90°C °C, react for 0.5h to 1h, and obtain a slightly yellow liquid. After cooling the obtained liquid, take the upper layer solid and wash it with water to obtain δ-stearoylgluconic acid.

[0051] Heat and melt the prepared δ-stearyl gluconate, add a small amount of water, slowly add 0.28mol zinc oxide and a small amount of catalyst, react at 120°C for 1 hour, cool to obtain a solid (δ-stearyl zinc gluconate), pulverize and wait for use.

[0052] Preparation of δ-stearyl calcium gluconate: Weigh 0.56mol (100g) of δ-glucolactone and slightly excess (greater than 0.56mol) of stearic acid, add catalytic amount of hydrochloric acid, control the temperature at 80°C to 90°C, After reacting for 0.5h-1h, a light yellow liquid was obtained. After coo...

Embodiment 2

[0060] Take the following raw materials according to the following weight percentages: 30% of δ-zinc stearyl gluconate, 5% of paraffin wax (inner lubricant), 5% of polyethylene wax (outer lubricant), antioxidant 1076 (antioxidant) 1 %, calcium carbonate (filler) 59%; the raw materials weighed are mixed uniformly to obtain PVC heat stabilizer 1.

[0061] Blend and press PVC and PVC heat stabilizer 1 according to the mass ratio of 100:4 to obtain PVC sheet 1, put PVC sheet 1 into a constant temperature aging box, control the temperature of the constant temperature aging box at 190°C, and observe the temperature of the PVC sheet every 10 minutes color. The results showed that the PVC sheet 1 had not yet turned black in 60 minutes.

Embodiment 3

[0063] Take the following raw materials according to the following percentages by weight: 35% of δ-calcium stearoyl gluconate, 8% of paraffin wax (inner lubricant), 8% of Fischer-Tropsch wax (outer lubricant), 2% of PKY168 (antioxidant), Calcium carbonate (filler) 47%; The raw material that weighs is mixed to obtain PVC thermal stabilizer 2.

[0064] Blend and press PVC and PVC heat stabilizer 2 according to the mass ratio of 100:4 to obtain PVC sheet 2, put PVC sheet 2 into a constant temperature aging box, control the temperature of the constant temperature aging box at 190°C, and observe the temperature of the PVC sheet every 10 minutes color. The result showed that the PVC sheet 2 had not turned black in 70 minutes.

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Abstract

The invention discloses a delta-fatty acyl gluconate and a preparation method thereof. Delta-glucose lactone and fatty acid are weighed in a molar ratio of 1:1, a catalytic amount of hydrochloric acidis added, a reaction is carried out at 80-90 DEG C for 0.5-1 hour, and delta-fatty acyl gluconic acid is obtained; the delta-fatty acyl gluconic acid is heated and melted, and a metal compound with 1 / 2 molar amount of the delta-glucose lactone is added, wherein the metal compound comprises one of zinc oxide, calcium hydroxide and magnesium hydroxide; a reaction is performed at 120 DEG C for 1 hour to obtain the delta-fatty acyl gluconate, wherein the delta-fatty acyl gluconate is used as a primary stabilizer of a PVC heat stabilizer. The invention also discloses the PVC heat stabilizer. Whenthe PVC heat stabilizer taking the delta-fatty acyl gluconate as the primary stabilizer is added into PVC, the PVC cannot be blackened at 190 DEG C for at least 50 minutes, thereby greatly improving the heat stability of the PVC.

Description

technical field [0001] The invention relates to the technical field of PVC heat stabilization, in particular to δ-fatty acyl gluconate, a preparation method thereof, and a PVC heat stabilizer. Background technique [0002] Polyvinyl chloride (PVC) has a wide range of applications due to its stable chemical properties and good weather resistance. [0003] However, due to the poor thermal stability of PVC and its high processing temperature (generally 160°C to 190°C), heat stabilizers are required for high temperature processing. At present, the commonly used PVC heat stabilizers mainly use hard zinc and hard calcium as the main stabilizers. PVC added with PVC heat stabilizers will turn black in about 30 minutes at high temperature, and the thermal stability is still low, which is difficult to meet the current high temperature of PVC. processing needs. [0004] The above content is only used to assist in understanding the technical solution of the present invention, and does...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/33C07C67/08C07C67/28C08L27/06C08L91/06C08L23/06C08K5/103
CPCC07C69/33C07C67/08C07C67/28C08L27/06C08L2201/08C08L2205/03C08L91/06C08L23/06C08K5/103Y02P20/52
Inventor 苏永盛
Owner CANTON SONECAL TECH