Method for preparing polyurethane foam from curcas oil base rigid foam polyether

A technology of polyurethane foam and jatropha oil, applied in the field of molecular polymerization, can solve the problem of high price, and achieve the effects of low cost, good compatibility and cost reduction

Inactive Publication Date: 2011-11-23
JIANGSU LVYUAN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The above products are all by-products of petroleum. Due to the shortage of petroleum resources, the prices of these products are relatively high.

Method used

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  • Method for preparing polyurethane foam from curcas oil base rigid foam polyether

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add jatropha oil 1000g, 180 diethylene glycol, and 4g sodium hydroxide in a 2L glass kettle, stir and heat up to 170 degrees, react for 3 hours, detect the hydroxyl value, and discharge.

[0024] Modified jatropha oil A hydroxyl value: 126mgKOH / g

Embodiment 2

[0026] Add jatropha oil 1000g, 140 g of pentaerythritol, 5 g of potassium hydroxide in a 2L glass kettle, stir and heat up to 170 degrees, react for 3 hours, detect the hydroxyl value, and discharge.

[0027] Modified jatropha oil B hydroxyl value: 199mgKOH / g

Embodiment 3

[0029] Add jatropha oil 1000g, 160 g of triethanolamine, 6 g of calcium hydroxide in a 2L glass kettle, stir and heat up to 170 degrees, react for 3 hours, detect the hydroxyl value, and discharge.

[0030] Modified jatropha oil C hydroxyl value: 231mgKOH / g

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Abstract

The invention discloses a method for preparing polyurethane foam from curcas oil base rigid foam polyether. Curcas oil is hydroxylated and reacted with epoxide. A synthesis hydroxyl value of rigid foam polyether polyol is 300-550mg KOH/g. Curcas oil base rigid foam polyether polyol, polyether (polyester) polyol, a catalyst 3, a foam stabilizer, water, a foaming agent and isocyanate are stirred uniformly according to a certain proportion to obtain rigid polyurethane foam. The polyurethane rigid foam prepared from polyether polyol containing curcas oil biobase is mainly used in fields of pipeline insulation, refrigerator, freezer, building insulation, sheet material, substrate, solar energy and interior decoration, etc.

Description

technical field [0001] The invention relates to a molecular polymerization method, in particular to a method for preparing polyurethane foam with a jatropha oil-based rigid foam polyether. Background technique [0002] The existing technologies are: [0003] 1. Transesterification of vegetable oil and small molecule alcohol into hard foam vegetable oil polyether polyol; [0004] This technology can produce vegetable oil hard foam polyether polyols with a hydroxyl value of 180-700mgKOH / g, that is, a molecular weight of about 300-600, but the application range is very narrow, and only about 10% can be added, and it cannot be used in the insulation layer of refrigerators. used in polyurethane foam. [0005] 2. Vegetable oil is hydroxylated and polymerized with propylene oxide to obtain polyether polyol; [0006] This technology is relatively complicated, and the hydrogen peroxide process is relatively polluting, and the cost is relatively high, and there is no competitive ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G65/26C08G65/28C08G65/30C08G101/00
Inventor 王夏春虞兴东
Owner JIANGSU LVYUAN NEW MATERIALS
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