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Application of carbamate compound as polyurethane lubricant

A carbamate and compound technology, which is used in the application field of carbamate compounds as polyurethane lubricants, can solve problems such as poor compatibility, impact on product quality and appearance, white frost on the product surface, etc., and achieve compatibility Excellent, outstanding anti-sticking and lubricating effects, improving the effect of adhesion

Active Publication Date: 2020-09-04
WANHUA CHEM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, commonly used pigments and filler dispersants such as ethylene bis-stearamide and ethylene bis-oleic acid amide have problems with the compatibility of polyurethane, which will lead to white frost on the surface of the product
To sum up, when polyolefin amide or Montan wax lubricants are used in polyurethane, they have poor compatibility and the problem of precipitation and oily blooming, and the product quality, especially the appearance quality, is greatly affected.

Method used

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  • Application of carbamate compound as polyurethane lubricant
  • Application of carbamate compound as polyurethane lubricant
  • Application of carbamate compound as polyurethane lubricant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Add 4,4'-diphenylmethylene diisocyanate (Wanhua Chemical, industrial grade) and behenyl alcohol (Sima-aldrich, 98%) into the reactor according to the formula, and the isocyanate and The molar ratio of hydroxyl groups is 1:1.01.

[0027] 2) Infuse nitrogen gas for 5 minutes to replace the air in the reactor. Set the reaction at 80 °C and stir the reaction for 60 min.

[0028] 3) Control the vacuum degree of the system to 0.01kPa, gradually raise the temperature to 210°C, and keep it for 10min until no small molecules come out. The product is obtained by cooling and discharging.

Embodiment 2

[0030] 1) Add 4,4'-dicyclohexylmethane diisocyanate (Wanhua Chemical, industrial grade) and lauryl alcohol (Tianjin Xiens, 99%) into the reactor according to the formula, and the isocyanate and hydroxyl in the formula The molar ratio is 1:1.12.

[0031] 2) Infuse nitrogen gas for 5 minutes to replace the air in the reactor. Set the reaction at 70 °C and stir the reaction for 90 min.

[0032] 3) Control the vacuum degree of the system to 0.01kPa, gradually raise the temperature to 190°C, and keep it for 15min until no small molecules come out. The product is obtained by cooling and discharging.

Embodiment 3

[0034] 1) Add 4,4'-dicyclohexylmethane diisocyanate (Wanhua Chemical, industrial grade) and palmitic alcohol (Shanghai Macklin, 98%) into the reactor according to the formula, and the moles of isocyanate and hydroxyl in the formula The ratio is 1:1.05.

[0035] 2) Infuse nitrogen gas for 5 minutes to replace the air in the reactor. Set the reaction at 70 °C and stir the reaction for 90 min.

[0036] 3) Control the vacuum degree of the system to 0.01kPa, gradually raise the temperature to 210°C, and keep it for 12min until no small molecules come out. The product is obtained by cooling and discharging.

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Abstract

The invention discloses an application of a carbamate compound as a polyurethane lubricant. The carbamate compound is prepared by reacting diisocyanate with a monofunctional aliphatic compound containing monohydroxyl, has the characteristics of excellent compatibility with thermoplastic polyurethane, no precipitation and outstanding anti-sticking and lubricating effects, and can be used for improving the market application that a polyurethane product is adhered and is not easy to demold.

Description

technical field [0001] The invention discloses the application of a carbamate compound as a polyurethane lubricant. The carbamate compound is prepared by reacting a diisocyanate and an aliphatic compound containing a monofunctional hydroxyl group. It has the characteristics of excellent compatibility with thermoplastic polyurethane, no precipitation, outstanding anti-sticking and lubricating effects, and can be used in market applications that improve the adhesion of polyurethane products and are difficult to release from the mold. Background technique [0002] Polyurethane is a polymer containing carbamate groups in the main chain of the molecule. Generally, polyurethane includes polyester type and polyether type. It has high mechanical strength, flexibility, abrasion resistance, oil resistance and other excellent properties. There are various processing and forming methods, and the market is widely used. [0003] Due to the strong polar isocyanate structural group and pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K5/205C07C269/02C07C271/12
CPCC08K5/205C07C269/02C07C2601/14C08L75/04C07C271/12
Inventor 杨万庆黄岐善
Owner WANHUA CHEM GRP CO LTD
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