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Preparation and Application of a Silicone Modified Polyether Polyol

A polyether polyol and silicone technology, which is applied in the synthesis and preparation of new chemical materials, can solve problems such as limited application range, poor flexibility, and shortened rebound time, and achieve simple process, good flexibility, and good slow rebound. The effect of elastic properties

Active Publication Date: 2019-04-23
FUJIAN MEIZHOU BAY CHLOR ALKALI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the main characteristics of slow rebound polyether polyols at home and abroad are wide applicability and perfect downstream supporting facilities; the shortcomings are mainly poor product quality and single performance, mainly composed of carbon and oxygen atoms and other skeletons, and polyurethane Slow rebound sponge is more sensitive to temperature and has low durability
When the polyurethane slow-rebound sponge is greatly affected by temperature, there will be disadvantages such as poor flexibility, reduced waterproof and oil-proof properties, increased hardness at low temperature, increased rebound time, reduced hardness at high temperature, and shortened rebound time, which greatly limits its application range.

Method used

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  • Preparation and Application of a Silicone Modified Polyether Polyol
  • Preparation and Application of a Silicone Modified Polyether Polyol

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Embodiment 1

[0023] The invention discloses a preparation of silicone-modified polyether polyol and its application in the preparation of temperature-resistant polyurethane memory foam, which includes the following steps:

[0024] Step 1: Polymerize allyl alcohol compounds and epoxy compounds with C3-8 carbon atoms in a basic catalyst at a polymerization temperature of 105-125°C and a pressure of 200-500Kpa to form an allyl polyether multi-component alcohol;

[0025] Step 2: The allyl polyether polyol monomer obtained in Step 1 and the hydrogen-containing silicone composition are added under the protection of nitrogen at an acidic catalyst, an addition reaction temperature of 100-120°C, and a reaction pressure of 0-500Kpa reaction to prepare silicone-modified polyether polyol.

[0026] Step 3: Weigh 30-50 parts of silicone-modified polyether polyol, 30-50 parts of basic polyether polyol, 10-30 parts of polymer polyol, 0.28-0.4 parts of amine catalyst, tin 0.08 to 1.2 parts of catalyst, 0...

Embodiment 2

[0034] The invention discloses a method for preparing silicone-modified polyether polyol. The specific steps are as follows:

[0035] Add 333.8g of methallyl alcohol and 8g of sodium methoxide into a stainless steel polymerization reactor, replace 3 to 5 times with 0.3-0.4MPa nitrogen, keep the oxygen content within 0.5%, control the reaction temperature at 110-115°C, and the pressure at 0.2- 0.5MPa, continuously add 1666.2g of propylene oxide and ethylene oxide mixture (ethylene oxide accounts for 8.5%), when the pressure does not change significantly, add 16.7g of 85% phosphoric acid aqueous solution and 100g of Ionized water, stirred for 2 hours, temperature controlled at 110-120°C, vacuumed for 3-5 hours to remove water and small molecules, to obtain methallyl alcohol-based polyether polyol.

[0036] Add 9g of chloroplatinic acid-isopropanol solution, control the reaction temperature at 100-110°C, continuously add 288.4g of hydrogen-containing silicone composition, the activ...

Embodiment 3

[0039] The invention discloses a method for preparing silicone-modified polyether polyol. The specific steps are as follows:

[0040] Add 248.8g of allyl alcohol and 8g of sodium methoxide into a stainless steel polymerization reactor, replace with 0.3-0.4MPa nitrogen for 3-5 times, keep the oxygen content within 0.5%, control the reaction temperature at 110-115°C, and the pressure at 0.2-0.5MPa , continuously add 1752g of propylene oxide and ethylene oxide mixture (ethylene oxide accounts for 7.5%), when the pressure does not change significantly, drop the temperature to 80-90°C and add 16.7g of 85% phosphoric acid aqueous solution and 100g of deionized water, After stirring for 2 hours, the temperature is controlled at 110-120° C., and the water and small molecules are removed under vacuum for 3-5 hours to obtain allyl alcohol-based polyether polyol.

[0041] Add 6.8g of chloroplatinic acid-isopropanol solution, control the reaction temperature at 100-110°C, continuously add...

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Abstract

The invention relates to the technical field of synthesis and preparation of novel chemical materials and discloses preparation and application of organosilicone modified polyether polyol. The method effectively combines the advantages of an organosiloxane polymer and a polyether polyol chemically without extra addition of an organic high / low-temperature-resistant material, and the method is obviously better than the traditional method for preparing polyurethane memory foam.

Description

technical field [0001] The invention relates to the technical field of synthesis and preparation of new chemical materials, in particular to the preparation and application of an organosilicon-modified polyether polyol. Background technique [0002] Polyurethane memory foam, also known as "slow rebound sponge", deforms when subjected to external force, and the sponge will slowly and automatically recover when the external force disappears. The whole process seems to be memorized. This material has been widely used in medical care, furniture, clothing and Industrial packaging and other fields. [0003] The main components of the preparation of the polyurethane slow-rebound sponge are polyether polyols for slow-rebound and organic isocyanates, and the type of polyether polyols for slow-rebound determines the characteristics of the slow-rebound sponge. At present, there are many types of slow rebound polyether polyols at home and abroad, the hydroxyl value is about 100-300 mg ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/336C08G18/50C08G18/40C08G18/48C08G18/63C08G101/00
CPCC08G18/4072C08G18/4804C08G18/4837C08G18/5096C08G18/632C08G65/336C08G2101/00C08G2280/00
Inventor 张立著
Owner FUJIAN MEIZHOU BAY CHLOR ALKALI IND
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