Method for preparing hard polyurethane foam plastics with soybean oil

A technology of rigid polyurethane and foamed plastics, applied in the field of preparing rigid polyurethane foamed plastics from soybean oil

Active Publication Date: 2008-12-03
NANTONG HAIERMA TECH CO LTD
View PDF4 Cites 54 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, there have also been researches on the modification of soybean oil functionalization in foreign countries. After they epoxidized soybean oil, they introduced hydroxyl groups to prepare polyurethane foams (1.J.Appl.Polym.Sci., 2000, 77, 467-473, 2.J.Polym.Sci., partA-Polym.Chem 2000,38,4062-4069); There are also fiber-reinforced composite materials prepared from epoxy soybean oil (1.J.Appl.Polym.Sci., 2000, 77, 467-473; 2.Composite Sructares 2004, 63, 47-57); There are reports in China that use epoxidized

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing hard polyurethane foam plastics with soybean oil
  • Method for preparing hard polyurethane foam plastics with soybean oil
  • Method for preparing hard polyurethane foam plastics with soybean oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] 1. Preparation of Epoxidized Soybean Oil

[0061] Add 125 grams of soybean oil, 30 grams of acetic acid (99%), and 2.5 grams of sulfuric acid (98%) in a 500ml four-necked round-bottom flask with an electric stirring device, a measuring thermometer, a dropping funnel, and a spherical condenser, and stir slowly Slowly heat up to 40°C, slowly add 60 grams of hydrogen peroxide (50%) into the dropping funnel, keep the reaction temperature at 50-70°C, and keep stirring for 3.5 hours after the dropwise addition. Stand to cool and stratify, separate the lower layer of acid water, add 50-60°C 5% NaOH solution to the oil layer to neutralize to about PH6-7, then wash 2-3 times with 50-60°C saturated NaCl solution and 60ml pure water, reduce Press and vacuum 130KPa to remove residual moisture (heating temperature 83° C.), filter to obtain 135 grams of product epoxy soybean oil. Detection of epoxy value: 6.35%, iodine value: 2.5gI 2 / 100g

[0062] 2. Preparation of soybean oil-ba...

Embodiment 2

[0074] 1. Preparation of Epoxidized Soybean Oil

[0075] Add 125 grams of soybean oil, 25 grams of formic acid (99%), and 2.0 grams of sulfuric acid (98%) in a 500ml four-necked round bottom flask with electric stirring, measuring thermometer, dropping funnel, and spherical condenser, and slowly Heat up to 40°C, slowly add 60 grams of hydrogen peroxide (50%) into the dropping funnel, keep the reaction temperature at 50-70°C, keep stirring for 3.0 hours after the dropwise addition. Stand to cool and separate the layers, separate the acid water in the lower layer, add 5% NaOH solution at 50-60°C to neutralize the oil layer to about pH 6-7, then wash with 50-60°C saturated NaCl solution and 60ml pure water for 2-3 times, reduce Press and vacuum 110KPa to remove residual moisture (heating is controlled at 81° C.), and filter to obtain 137 grams of product epoxy soybean oil. Detection of epoxy value: 6.43%, iodine value: 1.5gI 2 / 100g

[0076] 2. Preparation of Mixed Hydroxy Fat...

Embodiment 3

[0090] 1. Preparation of Epoxidized Soybean Oil

[0091] Add 100 grams of soybean oil, 15 grams of formic acid (99%), and 2.5 grams of phosphoric acid (85%) in a 500ml four-necked round-bottomed flask with electric stirring, measuring thermometer, dropping funnel, and spherical condenser, and stir slowly Heat up to 40°C, slowly add 55 grams of hydrogen peroxide (50%) into the dropping funnel, keep the reaction temperature at 50-70°C, keep stirring for 3.5 hours after the dropwise addition. Stand to cool and stratify, separate the lower layer of acid water, add 50-60°C 5% Na2CO3 solution to the oil layer to neutralize to about pH6-7, then wash with 50-60°C saturated NaCl solution and 40ml pure water for 2-3 times, reduce Press and evacuate at 115KPa to remove residual moisture (heating temperature is controlled at 82° C.), filter to obtain 108.5 grams of product epoxy soybean oil. Detection of epoxy value: 6.33%, iodine value: 3gI 2 / 100g

[0092] 2. Mixed hydroxy fatty acid...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method for preparing hard polyurethane foam plastics from soybean oil. The method comprises the steps as follows: (1) carrying out epoxidation including the sub-steps of subjecting soybean oil and epoxidizing agent to reaction to obtain epoxidized soybean oil; (2) carrying out ring-opening reaction including the sub-steps of subjecting epoxidized soybean oil and nucleophilic reagent of reactive hydrogen to the ring-opening reaction of epoxy chemical bond in the presence of a catalyst to obtain mixed hydroxyl fatty acid glyceride; (3) carrying out alcoholysis and esterification including the sub-steps of adding alcohol, heating for alcoholysis to obtain mixed hydroxyl fatty acid monoester, i.e. soybean oil based polyol, and esterifying with organic acid and acid anhydride to generate polyester polyol; and (4) sequentially adding 80-150 weight parts of isocyanate, 0.3-4 weight parts of triethanolamine and 0.5-4 weight parts of foam stabilizer to 100 weight parts of soybean oil based polyol, intensively stirring, adding 0.5-3 weight parts of distilled water, and uniformly foaming while stirring at the high speed.

Description

technical field [0001] The invention relates to a method for preparing rigid polyurethane foam, in particular to a method for preparing rigid polyurethane foam by using soybean oil. Background technique [0002] Polyurethane (PU) foam is widely used in household refrigerators, freezers, building insulation and other industries due to its excellent thermal insulation performance, good plasticity and processability; it is composed of polyether (ester) polyol (white material), isocyanate (Black material), a foam product formed by chemical reaction under the action of water. Polyol polymers commonly used in the preparation of PU foam plastics include polyether polyols and polyester polyols. Polyether (ester) polyol is the main raw material for preparing PU foam plastics. [0003] With the rapid development of the global economy, the global demand for all polyols including the above-mentioned polyether (ester) polyols is growing rapidly. At present, most synthetic polymer mate...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08G18/32C08G18/42C08G101/00
Inventor 邓健能
Owner NANTONG HAIERMA TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap