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Novel configuration phenyl methyl silicon oil

A technology of phenylmethyl silicone oil and a new structure, which is applied in medical science, prosthesis and other directions, can solve the problems of inability to meet the viscosity requirements, the negative charge and high temperature resistance performance are not ideal, and achieve the effect of low cost and low volatility

Inactive Publication Date: 2005-01-26
上海高分子材料研究开发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Negative charge and high temperature resistance are not ideal enough to meet some occasions with high viscosity requirements. 300 (25°C / mm 2 ·s -1 ) or above, where the flash point is greater than 300°C and where there is a high requirement for volatile content

Method used

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  • Novel configuration phenyl methyl silicon oil
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  • Novel configuration phenyl methyl silicon oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh respectively 192g (32%) of low degree of polymerization siloxane (component I) with phenylmethyl as end-capping agent, 81.6g (13.6%) of methylcyclosiloxane (component II), and hydroxy 326.4 g (54.4%) of end-capped low-polymerization dimethyldiphenylsiloxane, and 0.97 g of tetramethylammonium hydroxide aqueous solution (0.1% of the weight sum of the above three components). Add the raw materials of the four components into the reaction bottle, start stirring, turn on the vacuum pump, adjust the vacuum pump to maintain the residual pressure at (40-10)mmHg and start to heat up, when the temperature rises to 40°C, dehydrate at 45°C / 20mmHg After 20 minutes, reduce the vacuum to the residual pressure. At about 200mmHg, start to heat up. When the temperature reaches 85°C, continue dehydration at 85°C / 200mmHg and start the alkali-catalyzed rearrangement reaction. After 0.5 hours, heat up to 115°C , maintain at 115°C / 250mmHg for 2.0 hours, then remove the vacuum, start to ...

Embodiment 2

[0030] Weigh respectively 105g (35%) of low-polymerization siloxane (component I) with diphenylmethylsiloxane as an end-capping agent, 17.7g (5.9%) of methylcyclosiloxane (component II) ), 177.3g (59.1%) of dimethyldiphenylsiloxane (component III) with a low degree of polymerization terminated by hydroxyl groups, 0.67g (0.08% of the weight sum of the above three components) of tetramethylammonium hydroxide solution ) and other four-component raw materials were added, and the synthetic operation was carried out under the same process conditions as in Example 1 to obtain a viscosity (25°C): 720 / mm 2 the s -1 , Refractive index (20°C): 1.5185, flash point (°C): ≥350°C, 229g of phenylmethyl silicone oil, which is a light yellow transparent liquid, removes 37g of low boiling point, and the yield is about 77%.

Embodiment 3

[0032] Take by weighing respectively the low degree of polymerization siloxane (component I) 180g (29.3%) with diphenylmethylsiloxane as end-capping agent, methylcyclosiloxane (component II) 15g (2.4%), 420g (68.3%) of low polymerization degree dimethyl diphenylsiloxane (component II) terminated with hydroxyl groups, 0.97g (0.06% of the weight sum of the above three components) of tetramethylammonium hydroxide aqueous solution, etc. The raw materials of the first component are added, and the synthesis operation is carried out under the same process conditions as in Example 1 to obtain a viscosity (25°C): 1300 / mm 2 the s -1, Refractive index (20°C): 1.5270, flash point (°C): ≥360°C, freezing point <-40°C, 460g of phenylmethyl silicone oil, which is a light yellow transparent liquid, removes 84g of low boiling point, and the yield is about 77 %.

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Abstract

The invention relates to a novel configuration phenyl methyl silicon oil which is synthesized from the following four raw materials, low polymerization degree oxosilane 28-35%, methylsiloxane 2-14%, low polymerization degree dimethyl diphenyl siloxane 50-70%, and tetramethyl 0.01-0.1% of the total weight of the three other constituents.

Description

[technical field] [0001] The invention relates to the technical field of chemical engineering, in particular to a novel structural phenylmethyl silicone oil. [technical background] [0002] Phenylmethyl silicone oil is one of the main varieties of silicone oil, and its application is very wide. It can be used in the heat treatment bath of metal products, high temperature heating oil, aliphatic hydrocarbons, aromatic hydrocarbons, fatty acids, amines, alcohols, esters and olefins. , Chromatographic carrier for analysis, lubricating oil for electronic and electrical equipment, adding carbon black lithium soap or molybdenum disulfide as high-temperature grease, can be used for high-temperature fan bearings, ball bearings, ball bearing corkers for H-class motors, transportation chains, furnace doors Anti-friction bearings, wattmeters, automobile engines, textile dryers, bomb controllers, steam turbines, low-speed anti-friction bearings, lubrication of high-temperature resistant ...

Claims

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Application Information

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IPC IPC(8): A61L27/50C08G77/52C10M107/50D06M15/643
Inventor 章基凯戴希琏陈俊钦陈与同诸国建罗洪坚朱颖先
Owner 上海高分子材料研究开发中心
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