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Soft mlcrocrystalline wax composition

A technology of microcrystalline wax and composition, which is applied in the fields of moisture-proof, sealing and craft candles and insulation, and can solve the problems of incomplete requirements on the physical properties of microcrystalline wax, poor property modulation performance of microcrystalline wax, and relatively stringent requirements on desulfurization performance, etc. Problems, to achieve the effect of easy adjustment of product properties, improvement of brittle cracks, and excellent product quality

Active Publication Date: 2008-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the use of noble metal catalysts in the second stage of this technology, the requirements for the sulfur content of the raw material wax and the desulfurization performance of the first stage catalyst are relatively strict. Under the condition of hydroisomerization, the cracking reaction occurs, and the product yield is affected. Affected by the high equipment investment, it is more difficult to implement in industrial production
[0004] In various application fields of soft microcrystalline wax, the requirements for the physical properties of microcrystalline wax are not completely the same. In the existing production method of soft microcrystalline wax, the performance of adjusting the properties of microcrystalline wax is poor, and cannot Adapt to application requirements

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0025] The embodiment of the present invention is prepared by mixing various raw materials at a certain temperature and melting them into a uniform and transparent liquid, and forming and cooling the liquid after filtering. The melting temperature of Example 4 and Example 8 is 130°C, and the melting temperature of other Examples is 120°C.

[0026] The comparative example of the present invention is an imported No. 80 soft microcrystalline wax. Its properties are as follows: drop melting point 77~82℃, 100℃ kinematic viscosity 14.3~18.0mm 2 / s, 25°C penetration degree is 25~35 1 / 10mm, the measured value is shown in Table 2.

Embodiment 1

[0028] Microcrystalline wax No. 70 microcrystalline wax, from Dushanzi 70%

[0029] Petroleum oil Pharmaceutical yellow petrolatum, dropping point 48.2℃, producing area Tianjin 20%

[0030] Tackifier Polyisobutylene, average molecular weight of 20000, 10% in Jinzhou

Embodiment 2

[0032] Microcrystalline wax No. 75 microcrystalline wax, produced in Nanchong 82%

[0033] Petroleum oil Pharmaceutical white petroleum jelly, dropping point 54.5℃, origin Nanjing 12%

[0034] Tackifier Polyisobutylene, average molecular weight 8000, origin Jinzhou 6%

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PUM

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Abstract

The invention relates to a soft crystallitic wax combination containing crystallitic wax as the substrate, malthene and tackifier. The soft crystallitic wax combination disclosed in the invention has reduced rigidity and enhanced viscosity, and adjusts the product properties according to needs. Being capable of effectively overcoming the defects of the common crystallitic wax such as weak toughness and easy breakage, etc., the crystallitic wax composite relating to the invention is in particular suitable for the fields of moisture protection, insulation, sealing and gift candles, etc.

Description

Technical field [0001] The invention relates to a soft microcrystalline wax composition, which can effectively improve the defects of ordinary microcrystalline wax, such as poor toughness and easy brittleness, and is particularly suitable for use in the fields of moisture prevention, insulation, sealing, and craft candles. Background technique [0002] Microcrystalline wax, especially soft microcrystalline wax, is an important raw material for medicine, daily chemical industry and other fine chemical products. Ordinary microcrystalline waxes are mostly hard microcrystalline waxes. The penetration degree at 25°C is generally 8~18 1 / 10mm. It is easy to be brittle and has poor plastic deformation performance. It is easy to crack and fall off at low temperature, which affects its moisture resistance and insulation. And sealing performance. The production process of ordinary microcrystalline wax is generally obtained by solvent deasphalting, solvent refining, solvent dewaxing and deoi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/06C08L23/20
Inventor 王士新袁平飞李殿昭刘平蔡立
Owner CHINA PETROLEUM & CHEM CORP
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