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Illegal cooking oil polyester polyol for preparing polyurethane foam and preparation method thereof

A polyester polyol and polyurethane foam technology, applied in the field of chemical synthesis, can solve problems such as incompatibility, and achieve the effects of good compatibility, low cost and low cost

Inactive Publication Date: 2012-10-10
ZIBO DEXIN LIANBANG CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the existing polyester polyols are mainly produced from petroleum downstream products. With the increasing depletion of petrochemical resources and the improvement of environmental protection awareness, they are gradually unable to meet the requirements of social development. It has become the consensus of mankind to seek efficient, cheap and renewable alternative raw materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Prepare waste oil polyester polyol according to the following steps:

[0014] (1) Add 58kg of gutter oil, 50kg of glycerin, and 0.36kg of lithium hydroxide into the polyester reaction kettle, raise the temperature to carry out esterification reaction, raise the temperature to 235°C and keep it for 2 hours, and use ethanol to test the transparency of the product. If there is no turbidity, it is translucent. qualified;

[0015] (2) Cool down to 180°C, add 10kg of diethylene glycol and 46kg of phthalic anhydride, heat up to carry out esterification reaction, raise the temperature to 220°C, keep warm for 3 hours, measure the acid value ≤ 10, cool down to 180°C and vacuum for 2 hours, measure the acid value ≤ When the temperature is 2mgkoh / g, the temperature is lowered to 120°C, and diatomaceous earth is added to filter the material to obtain waste oil polyester polyol.

[0016] Product performance: good miscibility with foaming agent and polyether

[0017] Product index:...

Embodiment 2

[0019] Prepare waste oil polyester polyol according to the following steps:

[0020] (1) Add 65kg of gutter oil, 56kg of glycerin, and 0.8kg of lithium hydroxide into the polyester reaction kettle, raise the temperature to carry out esterification reaction, raise the temperature to 250°C and keep it warm for 2 hours, and use ethanol to test the transparency of the product. If there is no turbidity, it is translucent. qualified;

[0021] (2) Cool down to 180°C, add 16kg of diethylene glycol and 55kg of phthalic anhydride, heat up for esterification reaction, heat up to 230°C, keep warm for 3 hours, measure the acid value ≤ 10, cool down to 180°C and vacuum for 2 hours, measure the acid value ≤ When the temperature is 2mgkoh / g, the temperature is lowered to 120°C, and diatomaceous earth is added to filter the material to obtain waste oil polyester polyol.

[0022] Product performance: good miscibility with foaming agent and polyether

[0023] Product index: hydroxyl value: 44...

Embodiment 3

[0025] Prepare waste oil polyester polyol according to the following steps:

[0026] (1) Add 68kg of gutter oil, 58kg of glycerin, and 0.6kg of lithium hydroxide into the polyester reaction kettle, raise the temperature to carry out the esterification reaction, raise the temperature to 240°C and keep it for 2 hours, and use ethanol to test the transparency of the product. If there is no turbidity, it is translucent. qualified;

[0027] (2) Cool down to 180°C, add 20kg of diethylene glycol and 52kg of phthalic anhydride, heat up to carry out esterification reaction, raise the temperature to 230°C, keep warm for 3 hours, measure the acid value ≤ 10, cool down to 180°C and vacuum for 2 hours, measure the acid value ≤ When the temperature is 2mgkoh / g, the temperature is lowered to 120°C, and diatomaceous earth is added to filter the material to obtain waste oil polyester polyol.

[0028] Product performance: good miscibility with foaming agent and polyether

[0029] Product ind...

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Abstract

The invention belongs to the field of chemical synthesis and concretely relates to a preparation method of illegal cooking oil polyester polyol for preparing polyurethane foam, which is characterized in that the illegal cooking oil polyester polyol is prepared from the following raw materials in parts by weight: 30-70 parts of illegal cooking oil, 20-60 parts of glycerol, 0.1-1 part of lithium hydroxide, 10-20 parts of diethylene glycol and 45-65 parts of phthalic anhydride. The preparation method has the advantages that the illegal cooking oil polyester polyol is developed by modifying the illegal cooking oil, has low cost and good compatibility with a foaming agent and is applicable to substituting the partial or whole polyether polyol to produce the polyurethane foam in different density, and the prepared polyurethane foam has good toughness and low cost and can be used in the aspects of rigid-foam heat-preserving materials, cold spraying and the like.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, and in particular relates to a preparation method of waste oil polyester polyol used for preparing rigid polyurethane foam. Background technique [0002] Most of the existing polyester polyols are mainly produced from petroleum downstream products. With the increasing depletion of petrochemical resources and the improvement of environmental protection awareness, they are gradually unable to meet the requirements of social development. It has become the consensus of mankind to seek efficient, cheap and renewable alternative raw materials. . [0003] In recent years, the research on waste oil polymers has been greatly developed. Because these waste oils are cheap and easy to get, and they are more harmful to people's daily life, it is also a benefit to the people to find a way to use them. Therefore, the polymer made from it is not only low in cost, but also effectively utilized. Therefore, it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/672C08G63/78C08G18/42C08G18/68
Inventor 耿佃勇荆晓东王国强
Owner ZIBO DEXIN LIANBANG CHEM IND