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Preparation method and application of biomass base bi-component polyurethane

A two-component polyurethane and biomass technology, which is applied in the field of preparation of biomass-based two-component polyurethane, can solve the problems of incomplete removal of colored impurities, side reactions, unfavorable glycerin vaporization, etc., and achieve shortened reaction time, reduced cost, The effect of increasing the added value of products

Inactive Publication Date: 2014-01-29
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Vacuum distillation is one of the methods of crude glycerin purification, but the boiling point of glycerin is as high as 290°C, and its vacuum distillation still needs 180°C. This temperature easily leads to side reactions such as polymerization, and colored impurities cannot be completely removed. In addition, In the process of vacuum distillation, concentrated biodiesel and fatty acid soap and other impurities wrap glycerin, which is not conducive to the vaporization of glycerin. Therefore, it needs to be pretreated before vacuum distillation to obtain high-purity glycerin.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A preparation method of biomass-based two-component polyurethane, comprising the following steps:

[0045] (1) Preparation of polyester polyol

[0046] Add 30g of refined glycerin, 40g of rosin, 100g of ethylene glycol, and 0.3g of catalyst to the flask, heat it with a microwave with a power of 600W for 10min, add 15g of succinic anhydride, and heat with a microwave with an output power of 800W for 30min until anhydrous distills out , cooled to obtain polyester polyol;

[0047] The catalyst is a compound of p-toluenesulfonic acid and tetra-n-butyl titanate, and the mass ratio of p-toluenesulfonic acid to tetra-n-butyl titanate is 1:0.6;

[0048] The polyester polyol has a hydroxyl value of 106 mg KOH / g and an acid value of 2.1 mg KOH / g;

[0049] Described refined glycerol, preparation steps are as follows:

[0050] To 100g of crude glycerin, add 10g of methanol, neutralize with hydrochloric acid, centrifuge, the lower layer is used to prepare soap, the upper layer is...

Embodiment 2

[0060] A preparation method of biomass-based two-component polyurethane, comprising the following steps:

[0061] (1) Preparation of polyester polyol

[0062] Add 50g of refined glycerin, 60g of rosin, 100g of butanediol, and 0.8g of catalyst to the flask, heat it with a microwave with a power of 600W for 14min, add 28g of adipic anhydride, heat with a microwave with an output power of 800W for 40min, until the water is distilled out , cooled to obtain polyester polyol;

[0063] The catalyst is a compound of p-toluenesulfonic acid and tetraisopropyl titanate, and the mass ratio of p-toluenesulfonic acid to tetraisopropyl titanate is 1:1.2,

[0064] The polyester polyol has a hydroxyl value of 136 mg KOH / g and an acid value of 3.2 mg KOH / g;

[0065] Described refined glycerol, preparation steps are as follows:

[0066] Add 15g of methyl acetate to 100g of crude glycerin, neutralize with sulfuric acid, centrifuge, the lower layer is used to prepare soap, the upper layer is di...

Embodiment 3

[0076] A preparation method of biomass-based two-component polyurethane, comprising the following steps:

[0077] (1) Preparation of polyester polyol

[0078] Add 50g of refined glycerin, 60g of rosin, 100g of butanediol, and 0.8g of catalyst to the flask, heat it with a microwave with a power of 600W for 15min, add 28g of maleic anhydride, and heat with a microwave with an output power of 800W for 40min until anhydrous Distill and cool to obtain polyester polyol;

[0079] The catalyst is a compound of p-toluenesulfonic acid and tetraethyl titanate, and the mass ratio of p-toluenesulfonic acid to tetraethyl titanate is 1:0.7;

[0080] The polyester polyol has a hydroxyl value of 135 mg KOH / g and an acid value of 3.8 mg KOH / g;

[0081] Described refined glycerol, preparation steps are as follows:

[0082] To 100g of crude glycerin, add 12g of methyl acetate, neutralize with hydrochloric acid, centrifuge, the lower layer is used to prepare soap, the upper layer is distilled u...

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Abstract

The invention relates to a preparation method and application of biomass base bi-component polyurethane, in particular to the biomass base bi-component polyurethane obtained by raw materials of rosin and crude glycerine which is a by-product of manufacturing biodiesel. The polyurethane is applied in adhering polystyrene foam battenboard, belonging to the technical field of adhesives, comprehensive utilization of resources and composite materials. Component A of the biomass base bi-component polyurethane consists of polyester and polyether glycol and a catalyst, component B is obtained by heating isocyanate and polyester glycol, and polyester glycol is obtained by raw materials of crude glycerine which is the by-product of manufacturing biodiesel and rosin and the like; and the biomass base bi-component polyurethane is applied in adhering polystyrene foam battenboard.

Description

technical field [0001] The invention relates to a preparation method and application of a biomass-based two-component polyurethane, in particular to a biomass-based two-component polyurethane prepared from rosin and crude glycerin, a by-product of biodiesel production, as raw materials. The polyurethane is used for The invention relates to bonding polystyrene foam sandwich panels, belonging to the technical fields of adhesives, resource comprehensive utilization and composite materials. Background technique [0002] Two-component polyurethane adhesives are an important category of adhesives, with a wide range of uses and a large amount. Usually component A (main agent) is a hydroxyl component, component B (curing agent) is a component containing free isocyanate groups, and some component B is a terminal isocyanate polyurethane prepolymer, and the two components are packaged separately. It can be prepared according to a certain ratio before use. [0003] The two-component p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/67C08G18/66C08G18/48C08G18/42C08G63/87C08G63/85C08G63/21C08J3/28C09J175/14
Inventor 王志玲苏玲刘志莲杨秀利
Owner UNIV OF JINAN