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Formula and preparation method of polymer polyol

A technology of polyether polyols and polyols, applied in the field of polymer polyols, can solve the problems that limit the preparation and application of polymer polyols, and achieve the effect of increased viscosity and high solid content

Active Publication Date: 2021-01-08
QUANGANG PETROCHEM RES INST OF FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As people's requirements for product quality are getting higher and higher, the requirements for the preparation of stable polymer polyols with high solid content are also getting higher and higher, but the resulting increase in system viscosity limits the preparation of polymer polyols and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment one: a kind of formula of polymer polyol, unsaturated polyol prepolymer (formed by polyether polyol and 2-(hydroxymethyl) methyl acrylate transesterification reaction, polyether polyol and 2-( The ratio by weight of hydroxymethyl) methyl acrylate is 100:1) 45kg, vinyl monomer (styrene 4.07kg, acrylonitrile 2.72kg, hydroxyethyl acrylate 0.21kg) 7kg, dispersant (BDF-4) 2kg, initiator (azobisisobutyronitrile) 0.2kg, chain transfer agent (aliphatic mercaptan) 5kg.

Embodiment 2

[0034] Embodiment two: a kind of formula of polymer polyol, unsaturated polyol prepolymer (formed by transesterification reaction of polyether polyol and hydroxyethyl methacrylate, polyether polyol and hydroxyethyl methacrylate The weight ratio is 300:1) 47kg, vinyl monomer (styrene 28.90g, acrylonitrile 12.38g, hydroxyethyl acrylate 1.72g) 43kg, dispersant (BDF-4) 3kg, initiator (azobis Isobutyronitrile) 0.5kg, chain transfer agent (isopropanol) 6.5kg.

Embodiment 3

[0035] Embodiment three: a kind of formula of polymer polyol, unsaturated polyol prepolymer (formed by free polymerization of polyether polyol and hydroxyethyl methacrylate, the weight of polyether polyol and hydroxyethyl methacrylate The ratio of parts is 500:1) 55kg, vinyl monomer (styrene 34.91kg, acrylonitrile 11.64kg, hydroxyethyl acrylate 2.45kg) 49kg, dispersant (BDF-4) 8kg, initiator (azodiiso Butyronitrile) 0.6kg, chain transfer agent (isopropanol 6kg, aliphatic mercaptan 4kg) 10kg.

[0036] According to the ratio shown in embodiment one to embodiment three:

[0037] S1. Mix polyether polyol and hydroxyethyl methacrylate uniformly at a temperature of 80-140° C., and dehydrate under reduced pressure for 2-8 hours to obtain an unsaturated polyol prepolymer;

[0038] S2, the prepared unsaturated polyol prepolymer is lowered to room temperature, then add vinyl monomer, dispersant, initiator and chain transfer agent to the unsaturated polyol prepolymer, mix it uniformly, ...

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PUM

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Abstract

The invention relates to the field of polymer polyol, and discloses a formula of polymer polyol. The formula is prepared from the following components in parts by weight: 45-55 parts of unsaturated polyol prepolymer, 37-49 parts of vinyl monomer, 2-8 parts of dispersing agent, 0.2-0.6 part of initiator and 5-10 parts of chain transfer agent. The unsaturated polyol prepolymer is obtained by ester exchange reaction of polyether polyol and 2-(hydroxymethyl)methyl acrylate, and the weight part ratio of the polyether polyol to the 2-(hydroxymethyl)methyl acrylate is 100: 1-500: 1. According to thepolymer polyol prepared according to the formula, the solid content of the prepared polymer polyol can be effectively improved on the premise that the viscosity of the prepared polymer polyol is not greatly increased.

Description

technical field [0001] The invention relates to the technical field of polymer polyols, in particular to a formulation of polymer polyols and a preparation method thereof. Background technique [0002] Polymer polyol (POP) is a polyol containing organic fillers, which can replace inorganic fillers, not only can make polyurethane foam have high load-bearing capacity and good resilience performance, but also make the foam cell structure, physical and mechanical Performance is improved. [0003] Polymer polyol (POP) is the in-situ polymerization of ethylenically unsaturated monomers and polyether polyols in the presence of initiators to generate grafted polyether polyols containing solid particles, polyether polyols, vinyl A mixture of self-polymers or copolymers of unsaturated monomers. [0004] Generally speaking, the viscosity of polymer polyol system increases with the increase of its solid content. As people's requirements for product quality are getting higher and high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/06C08F212/10C08F220/44C08F220/20
CPCC08F290/062C08F212/10C08F220/44C08F220/20
Inventor 陈登龙吕志仁吴丹丹陈明鹏
Owner QUANGANG PETROCHEM RES INST OF FUJIAN NORMAL UNIV
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