Soft polyurethane foam plastic prepared by rape oil

Abstract

A soft PUR foam prepared by using rapeseed oil, is produced according to the following steps: 1) taking rapeseed oil and epoxy agent for epoxidation reaction in the presence of catalyst, 2) taking epoxy rapeseed oil and nucleophilic reagent containing reactive hydrogen for epoxy ring opening reaction to generate the mixed hydroxy fatty acids triglycerides, 3) adding alcoholysis agent for alcoholysis reaction to generate bio-radical polyol, 4) conducting bio-radical polyol and oxy-olefin for polyaddition reaction to generate the bio-radical polyether polyol, 5) taking bio-radical polyether polyol and polyether polyol and / or polyester polyol as raw materials, supported by catalyst, foam stabilizer, foaming agent to prepare combined polyether polyol, 6) mixing the combined polyether polyol and isocyanate evenly for foaming reaction to produce the invention.

Description

technical field

[0001] The invention relates to soft polyurethane foam prepared by rapeseed oil, belonging to the field of polyurethane synthetic materials. Background technique

[0002] Flexible polyurethane foam (abbreviated as soft polyurethane foam) refers to a type of flexible polyurethane foam with certain elasticity. It is the most widely used polyurethane product, and the cell structure of polyurethane soft foam is mostly open. Generally, it has low density, good elastic recovery, sound absorption, breathability, heat preservation and other properties. It is mainly used as furniture cushion material, vehicle seat cushion material, and various soft cushion laminated composite materials. Soft foam is also used in industry and civil use. Used as filter material, insulation material, shockproof material, decoration material, packaging material and heat insulation material, etc.

[0003] With the rapid development of the world economy, the global demand for all polyols i...

Examples

Embodiment 1

[0075] 1000g of refined rapeseed oil (108 iodine value), 250g of formic acid (88%), 20g of phosphoric acid (50%) will be added in a 2L glass kettle, stirred, and 487g of 30% hydrogen peroxide is added dropwise. Under the condition of ℃, react for 5-10 hours, stand and separate the acid water, add 6% sodium carbonate solution to neutralize, then wash 3 times with water at a temperature of 70-80 ℃, depressurize, and the vacuum degree is 100 ~700kPa removes residual moisture, obtains the product epoxy rapeseed oil, the epoxy value of testing product is 5.3%.

Embodiment 2

[0077] 980g of refined rapeseed oil (102 iodine value), 490g of benzoic acid, 25g of phosphoric acid (50%) will be added in a 2L glass kettle, stirred, and 420g of 38% hydrogen peroxide is added dropwise. React at low temperature for 5-10 hours, stand and separate the acid water, add 5% sodium hydroxide solution to neutralize, then wash 3 times with water at a temperature of 70-80°C, reduce pressure, and the vacuum degree is 100-700kPa Residual moisture is removed to obtain the product epoxy rapeseed oil, and the epoxy value of the product is 5.13%.

Embodiment 3

[0079] Add 1050g of the product epoxy rapeseed oil in Example 1 into a 5L glass kettle, then add 560g of diethylene glycol, 4.9g of potassium hydroxide, stir and heat up, control the reaction temperature at 65-180°C, and the reaction time is 5-10 Hour. Add 133g of isopropanol, control the temperature at 80-150°C, carry out the alcoholysis reaction for 4 hours, and then keep it under the condition of vacuum degree of 100-750kPa for 4 hours, then extract 68g of residual alcohol, and then take a sample for analysis. The hydroxyl value is 337mgKOH / g of bio-based polyols. Dehydration is carried out for 60 minutes at a vacuum degree of 100-750KPa and a temperature of 80-120° C., and the water content is lower than 0.05% after filtration. Feed according to the order of EO and PO, wherein EO: 374g, PO: 2119g, after a reaction time of 4 to 6 hours, refine to obtain 3950g of bio-based polyether polyol A with a hydroxyl value of 56KOHmg / g.

technical field

[0001] The invention relates to soft polyurethane foam prepared by rapeseed oil, belonging to the field of polyurethane synthetic materials. Background technique

[0002] Flexible polyurethane foam (abbreviated as soft polyurethane foam) refers to a type of flexible polyurethane foam with certain elasticity. It is the most widely used polyurethane product, and the cell structure of polyurethane soft foam is mostly open. Generally, it has low density, good elastic recovery, sound absorption, breathability, heat preservation and other properties. It is mainly used as furniture cushion material, vehicle seat cushion material, and various soft cushion laminated composite materials. Soft foam is also used in industry and civil use. Used as filter material, insulation material, shockproof material, decoration material, packaging material and heat insulation material, etc.

[0003] With the rapid development of the world economy, the global demand for all polyols i...

Examples

Embodiment 1

[0075] 1000g of refined rapeseed oil (108 iodine value), 250g of formic acid (88%), 20g of phosphoric acid (50%) will be added in a 2L glass kettle, stirred, and 487g of 30% hydrogen peroxide is added dropwise. Under the condition of ℃, react for 5-10 hours, stand and separate the acid water, add 6% sodium carbonate solution to neutralize, then wash 3 times with water at a temperature of 70-80 ℃, depressurize, and the vacuum degree is 100 ~700kPa removes residual moisture, obtains the product epoxy rapeseed oil, the epoxy value of testing product is 5.3%.

Embodiment 2

[0077] 980g of refined rapeseed oil (102 iodine value), 490g of benzoic acid, 25g of phosphoric acid (50%) will be added in a 2L glass kettle, stirred, and 420g of 38% hydrogen peroxide is added dropwise. React at low temperature for 5-10 hours, stand and separate the acid water, add 5% sodium hydroxide solution to neutralize, then wash 3 times with water at a temperature of 70-80°C, reduce pressure, and the vacuum degree is 100-700kPa Residual moisture is removed to obtain the product epoxy rapeseed oil, and the epoxy value of the product is 5.13%.

Embodiment 3

[0079] Add 1050g of the product epoxy rapeseed oil in Example 1 into a 5L glass kettle, then add 560g of diethylene glycol, 4.9g of potassium hydroxide, stir and heat up, control the reaction temperature at 65-180°C, and the reaction time is 5-10 Hour. Add 133g of isopropanol, control the temperature at 80-150°C, carry out the alcoholysis reaction for 4 hours, and then keep it under the condition of vacuum degree of 100-750kPa for 4 hours, then extract 68g of residual alcohol, and then take a sample for analysis. The hydroxyl value is 337mgKOH / g of bio-based polyols. Dehydration is carried out for 60 minutes at a vacuum degree of 100-750KPa and a temperature of 80-120° C., and the water content is lower than 0.05% after filtration. Feed according to the order of EO and PO, wherein EO: 374g, PO: 2119g, after a reaction time of 4 to 6 hours, refine to obtain 3950g of bio-based polyether polyol A with a hydroxyl value of 56KOHmg / g.

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