Unlock instant, AI-driven research and patent intelligence for your innovation.

Reaction system for preparing polymer polyol and method for preparing polymer polyol

A technology of reaction systems and polyols, applied in chemical instruments and methods, chemical/physical/physical chemical fixed reactors, chemical/physical/physical chemical processes, etc., can solve the difficulties of realization, increase the difficulty of tank storage and metering and deployment , increase investment and other issues, to achieve the effect of good temperature control, simple structure, and stable polymerization reaction

Active Publication Date: 2022-02-18
WANHUA CHEM GRP CO LTD
View PDF19 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is more difficult to implement in an industrial device. The former requires the use of two different reactors or processes, which increases the difficulty of tank storage and metering and deployment; the latter requires the combination of batch reactors and continuous reactors, which increases investment.

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
  • Reaction system for preparing polymer polyol and method for preparing polymer polyol
  • Reaction system for preparing polymer polyol and method for preparing polymer polyol
  • Reaction system for preparing polymer polyol and method for preparing polymer polyol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] reaction system such as figure 1 As shown, the description about the reaction system is as described above, and will not be repeated here.

[0091] Reactor information is shown in Table 1,

[0092] Table 1

[0093]

[0094]

[0095] The reaction raw material ratio is as follows:

[0096] Table 2

[0097]

[0098] Combine below figure 1 The preparation process of polymer polyol is illustrated:

[0099] First Response Phase:

[0100] After the inside of the reactor 4 is replaced with nitrogen, it is filled with nitrogen to 50kpa, and the mixed reaction bottom material is completely imported into In the reactor 4; close the fifth valve 61, the first valve 15 in turn, open the second valve 24, the third valve 32, start the second circulating pump 23, keep the motor current at 63.5% of the maximum current, start the first circulating pump 13 , keep the motor current at 67% of the maximum current. The heater 21 feeds 5S steam to start heating, and observes th...

Embodiment 2、 comparative example 3-4

[0117] Preparation method of polyurethane foam:

[0118] According to the raw materials shown in Table 4 and the parts by weight to prepare the combined material (numbers in the table are mass percentages, taking the total mass of the combined material as 100%), the combined material and the isocyanate raw material 8001 were placed in a 22°C environment for 3 hours at a constant temperature. Then take 100g combination material, mix it with 60g 8001 was stirred and mixed for 6 seconds in a stirrer (rotation number 3000rpm). Then quickly pour the stirred mixture into an aluminum open mold (dimensions: length 300mm, width 300mm, thickness 50mm) preheated to 60°C to make the mixture foam. After 7 minutes, the foam was taken out to obtain polyurethane foam.

[0119] Table 4

[0120]

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

PropertyMeasurementUnit
hydroxyl valueaaaaaaaaaa
degree of unsaturationaaaaaaaaaa
hydroxyl valueaaaaaaaaaa
Login to View More

Abstract

The invention provides a reaction system for preparing polymer polyols and a method for preparing polymer polyols, the reaction system includes a reactor, a first circulation unit, a second circulation unit and a flow direction switching unit, wherein the reactor The reaction chamber is divided into a first reaction chamber and a second reaction chamber by a partition, and the top of the partition is provided with an overflow port so that the first reaction chamber and the second reaction chamber communicate with each other; A circulation unit can make the materials in the first reaction chamber circulate and flow between the discharge port of the first reaction chamber and the feed port of the first reaction chamber; the second circulation unit can make the materials in the second reaction chamber flow in the second reaction chamber The material outlet of the second reaction chamber circulates and flows between the material inlet of the second reaction chamber. The polymer polyol prepared based on the reaction system of the invention has a low-viscosity effect, and the polymer polyol prepared by the method of the invention can obtain polyurethane foam with excellent mechanical properties and high hardness.

Description

technical field [0001] The invention belongs to the field of polyurethane materials and processing, and in particular relates to a preparation method and a reaction system of polymer polyols. Background technique [0002] Polymer polyol (POP) is a modified polyether polyol with special properties, which uses polyether polyol (PPG) as the matrix, and acrylonitrile (An), styrene (St) and other vinyl monomers Made by graft copolymerization. It not only maintains the original flexibility of the polyether chain, but also has the good structural properties of vinyl polymers, so that the polyurethane foam has a high load-bearing capacity and good resilience performance, and increases the open cell ratio of the foam. It is widely used in Production of high-load, high-resilience soft and semi-rigid polyurethane foams, used in automobiles, trains, aircraft manufacturing, furniture industries and other fields. [0003] The preparation of polymer polyols can be made by continuous feed...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/24C08F283/06C08F212/08C08F220/44C08G18/63C08G18/65C08G18/32C08G101/00
CPCB01J19/0013B01J19/2465C08F283/06C08G18/632C08G18/657B01J2219/00105C08G2110/0083
Inventor 李付国刘洋姜明秦承群房士强
Owner WANHUA CHEM GRP CO LTD