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A kind of comb type macromonomer and preparation method thereof, a kind of polymer polyol and polyurethane foam

A macromonomer and polymer technology, applied to comb macromonomers and their preparation, can solve the problems of high product viscosity, device shutdown, easy polymerization, etc., and achieve excellent stability, low usage, and high conversion rate. Effect

Active Publication Date: 2019-04-19
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the product has high viscosity, many particles, and is easy to polymerize. In particular, maleic anhydride or phthalic anhydride is often used in the preparation process of the stabilizer, which is easy to sublime and block the gas phase pipeline, which increases the maintenance of the device. Expenses, in severe cases will cause the device to stop

Method used

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  • A kind of comb type macromonomer and preparation method thereof, a kind of polymer polyol and polyurethane foam
  • A kind of comb type macromonomer and preparation method thereof, a kind of polymer polyol and polyurethane foam
  • A kind of comb type macromonomer and preparation method thereof, a kind of polymer polyol and polyurethane foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] step 1)

[0085] Add: 79.80 g of acrylic acid, polyethylene glycol with a weight average molecular weight of about 370 in a 1 liter reactor equipped with a stirrer, a heater, a thermocouple, a condensing device with a water separator, an inlet and an outlet device, and under nitrogen protection 450.71g, toluene 200g, hydroquinone 3g, p-toluenesulfonic acid 0.6g, mix well, maintain 110°C for 4h, then cool to room temperature.

[0086] Step 2)

[0087] Add 66.50 g of butadiene and 3 g of benzoyl peroxide (BPO) initiator into the reaction solution in step 1), raise the temperature to 80° C. under stirring, react for 2 hours, and obtain 1# comb-shaped macromer solution after cooling down.

Embodiment 2

[0089] step 1)

[0090] In a 1 liter reactor equipped with a stirrer, a heater, a thermocouple, a condensing device with a water separator, an inlet and an outlet device, under nitrogen protection, add: 22.07 g of acrylic acid, 119.41 g of polypropylene glycol with a weight average molecular weight of 370, 640 g of toluene, 0.8 g of hydroquinone, and 0.2 g of tert-butyl titanate were mixed uniformly, maintained at 120° C. for 4 h, and then cooled to room temperature.

[0091] Step 2)

[0092] Add 17.56 g of isoprene and 0.96 g of benzoyl peroxide (BPO) initiator into the reaction solution in step 1), raise the temperature to 90° C. under stirring, and react for 2 h. Obtain 2# comb type macromonomer solution after cooling.

Embodiment 3

[0094] step 1)

[0095] In a 1-liter reactor equipped with a stirrer, a heater, a thermocouple, a condensing device with a water separator, an inlet and an outlet device, and under nitrogen protection, add: 89.43 g of methacrylic acid, polyethylene glycol with a weight average molecular weight of 290 235g of alcohol, 97.11g of polypropylene glycol with a weight-average molecular weight of 350, 320g of toluene, 2.4g of hydroquinone, and 0.5g of t-butyl titanate were mixed uniformly, and kept at 110°C for 4 hours, and then cooled to room temperature.

[0096] Step 2)

[0097] Add 54.93 g of butadiene and 3.36 g of benzoyl peroxide (BPO) initiator into the reaction liquid in step 1), raise the temperature to 80° C. under stirring, and react for 2 h. Obtain 3# comb type macromonomer solution after cooling.

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Abstract

The invention discloses a comb-shaped macromolecular monomer, a preparation method thereof and a polymer polyol prepared therefrom. The comb-shaped macromonomer is prepared by first reacting a compound containing a double bond with a dihydric alcohol, and then adding a monomer containing a conjugated double bond in the presence of an optional initiator for polymerization. The comb-shaped macromonomer is suitable as a dispersion stabilizer for polymer polyol, reduces its viscosity, and has excellent stabilizing properties. The flexible polyurethane foam prepared by using the polymer polyol has excellent properties, low VOC and low odor, and excellent elongation at break and tensile strength.

Description

technical field [0001] The invention relates to the preparation of a macromonomer used in polymer polyols and its application in polymer polyols. Specifically, it relates to a comb-shaped macromonomer and a preparation method thereof, a method for preparing a polymer polyol using the macromonomer and the prepared polymer polyol, and also relates to a soft polymer polyol prepared using the polymer polyol. Quality polyurethane foam. Background technique [0002] Various types of graft polyols known in the art include polyisocyanate addition polyols, polyurea and / or polydiurea polyols, polymer polyols, and the like. Polymer polyol (POP) is the most widely used, and is mainly used to prepare suitable isocyanate-reactive components for polyurethane materials such as foams and elastomers. The two main types of polyurethane foam include slabstock foam and molded foam. Slabstock foam is used in the carpet, furniture and bedding industries. The primary use of slabstock foam is as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F291/08C08F220/28C08F236/06C08F236/08C08G18/66C08G18/63C08G18/48C08G18/32C08G18/22C08G18/18C08J9/08C08G101/00
CPCC08F220/28C08F265/04C08F283/06C08G18/163C08G18/1825C08G18/1833C08G18/227C08G18/3275C08G18/3281C08G18/4072C08G18/48C08G18/632C08G18/633C08G18/657C08G18/6688C08F220/286C08F220/287C08F220/288C08G2110/0083C08F236/08C08F236/06
Inventor 李付国姜乃化鞠昌迅孙双翼李晶陈杰杨洗李文滨何金同
Owner WANHUA CHEM GRP CO LTD
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