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Method for synthesizing macromonomer for polymer polyol by plant oil and uses thereof

A macromonomer and polymer synthesis technology, which is applied in the field of polymer polymerization, can solve the problems of small particles, high price, and cannot but reduce the stability of polymer polyols, and achieve the effect of small particles and good stability.

Active Publication Date: 2008-07-30
北京市丰信德科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2. Use polyether to react with unsaturated isocyanate to prepare a polymer containing double bonds as a macromonomer for the preparation of high-solid polymer polyols; the polymer polyol styrene synthesized from this macromonomer High content, high solid content, small particles, good stability, but unsaturated isocyanate is not a conventional product, rare in China, and expensive
However, the prior art has not been able to increase the solids content without degrading the stability of the polymer polyol and undesirably increasing its viscosity
[0014] Prior Art Increased styrene monomer and monomer mixture content can result in undesirably high viscosity polymer polyols and / or poor filterability, stability

Method used

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  • Method for synthesizing macromonomer for polymer polyol by plant oil and uses thereof
  • Method for synthesizing macromonomer for polymer polyol by plant oil and uses thereof
  • Method for synthesizing macromonomer for polymer polyol by plant oil and uses thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Add 500g of soybean oil and 50g of 80% formic acid in a 1L glass kettle, stir for 10 minutes, add dropwise 120g of 30% hydrogen peroxide, the mol ratio of hydrogen peroxide to soybean oil is 1.93, and the mol ratio of catalyst carboxylic acid to soybean oil is 1.59, react at 50-55°C for 5 hours, heat up to 100-110°C, reflux for 6 hours, pass through the ion exchange resin, wash twice with distilled water, and vacuum dehydrate at 110°C until the water content is less than 0.04%. This product is hydroxylated vegetable oil A. The hydroxyl value is 102.9 mgKOH / g, the water content is 0.05%, the unsaturated double bond is 0.20 mgN / g, and the acid value is 0.08 mgKOH / g.

Embodiment 2

[0042] Add 500 g of corn oil, 70 g of 80% formic acid in a 1L glass kettle, stir for 10 minutes, add dropwise 160 g of 30% hydrogen peroxide, the mol ratio of hydrogen peroxide to corn oil is 2.58, the ratio of catalyst carboxylic acid to corn oil The molar ratio is 2.22, react at 60-65°C for 6 hours, heat up at 100-110°C, reflux for 7 hours, pass through the ion exchange resin, wash twice with distilled water, and vacuum dehydrate at 110°C until the water content is less than 0.04%. This product is hydroxylated Vegetable oil B has a hydroxyl value of 142.5 mgKOH / g, a water content of 0.05%, an unsaturated double bond of 0.16 mgN / g, and an acid value of 0.11 mgKOH / g.

Embodiment 3

[0044] In a 1L glass kettle, add 500 g of sunflower oil, 40 g of 80% formic acid, stir for 10 minutes, add dropwise 100 g of 30% hydrogen peroxide, the mol ratio of hydrogen peroxide to sunflower oil is 1.61, the ratio of catalyst carboxylic acid to sunflower oil The molar ratio is 1.27, react at 40-45°C for 4 hours, heat up at 95-105°C, reflux for 4 hours, pass through the ion exchange resin, wash twice with distilled water, and vacuum dehydrate at 110°C until the moisture is less than 0.04%. This product is hydroxyl C , the hydroxyl value is 79.2 mgKOH / g, the water content is 0.05%, the unsaturated double bond is 0.23 mgN / g, and the acid value is 0.07 mgKOH / g.

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Abstract

The invention relates to a method for and purpose of synthesizing the polyols macromonomers based on plant oil polyols macromonomer, which comprise the steps that: A) the hydroxylation vegetable oil is obtained by hydroxylation of vegetable oil; B) By making the hydroxylation vegetable oil in A) react with the isocyanate, the modified plant oil macromonomer is obtained. For the detailed steps, see the specification. The invention has the advantages that: the plant oil is the renewable resource with good biodegradability and avirulence, and the oil is a clean and abundant raw material, also environment-friendly 'bio-surfactant' polyol, and can increase 'green content' of soft polyurethane foam material. Our country is a large one engaged in producing the plant oil, and has a yield runningthe third in the world. So, forcefully researching and developing plant oil-based products to substitute the petroleum derivatives are of great importance. The modified plant oil macromonomer in StepB) can be used for preparing high solid polymer polyol that is suitable for soft polyurethane foam material and used for furniture, carpet and bedding industries.

Description

technical field [0001] The present invention relates to a polymerization method of macromolecules, in particular to using vegetable oil as a raw material, after hydroxylation, the hydroxylated vegetable oil is polymerized with isocyanate to prepare macromolecular monomers, and the macromolecular monomers synthesized by the present invention are used to prepare polymers Polyol or graft polyether (POP). Background technique [0002] There are currently two synthetic routes for existing macromonomers: [0003] 1. Use polyether and unsaturated small molecular acid or acid anhydride, generally maleic anhydride, to react to prepare a polyether ester containing double bonds as a macromonomer for preparing polymer polyols with higher solid content; Molecular monomers are generally used in China because of their simple synthesis, but it is difficult to synthesize polymer polyols with high styrene content, and the particles are larger and less stable. US Pat. No. 3,383,351, US Pat. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C271/28C07C269/02C08F220/36C08G18/40C08G101/00
Inventor 虞兴东阮廷才
Owner 北京市丰信德科技发展有限公司
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