Supercharge Your Innovation With Domain-Expert AI Agents!

A kind of preparation method for the polyalcohol of flame-retardant polyurethane foam plastics

A technology of foamed plastics and polyurethane, which is applied in the fields of polymer chemistry, building insulation materials, and reactive flame retardants. The effect of mild operation and preparation reaction and simple process

Inactive Publication Date: 2017-04-19
UNIV OF JINAN
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Flame retardants can be divided into two categories: additive type and reactive type. Additive flame retardants refer to flame retardants that cannot chemically react with isocyanate or foaming aids. Although such flame retardants can improve the flame retardancy of polyurethane However, due to the large amount of addition, not only the mechanical properties of polyurethane foam materials are reduced, but also, as time goes by, the flame retardant gradually migrates and precipitates from the material, resulting in further deterioration of the flame retardant performance and physical and mechanical properties during its use. reduce, and cause secondary pollution to the environment

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
  • A kind of preparation method for the polyalcohol of flame-retardant polyurethane foam plastics
  • A kind of preparation method for the polyalcohol of flame-retardant polyurethane foam plastics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 A kind of preparation method for the polyol of flame-retardant polyurethane foam plastics

[0040] Add 100 g of triethyl phosphate into a flask equipped with a reflux device, start stirring, add 40 g of phosphorus pentoxide, heat it up to 120°C, and keep it warm for 20 min; add 40 g of pentaerythritol and 1.5 g of catalyst monobutyl stannic acid, and react h; add ethylene oxide 250g and catalyst tetraethylammonium bromide 1.6g, continue to react for 5 h, cool, and discharge; the product obtained is a light yellow transparent liquid with an acid value of 1.9 mgKOH / g and a viscosity of 7583 mPa. s.

Embodiment 2

[0041] Embodiment 2 A kind of preparation method for the polyol of flame-retardant polyurethane foam plastics

[0042] Add 100g of triethyl phosphate into the flask equipped with a reflux device, start stirring, add 80g of phosphorus pentoxide, heat up to 125°C, and keep it warm for 30 minutes; add 60g of pentaerythritol and catalyst monobutyl dihydroxytin chloride 1.8g, reacted for 3.5 h; added 320g of epichlorohydrin and 2.2g of catalyst dodecyltrimethylammonium chloride, continued to react for 5h, cooled, and discharged; the obtained product was a light yellow transparent liquid with an acid value of 1.6 mgKOH / g, the viscosity is 8720 mPa.s.

Embodiment 3

[0043] Embodiment 3 A kind of preparation method for the polyol of flame-retardant polyurethane foam plastics

[0044]Add 100g of triethyl phosphate into the flask equipped with a reflux device, start stirring, add 60g of phosphorus pentoxide, heat up to 120°C, and keep it warm for 25 minutes; add 50g of pentaerythritol and 1.7 g, reacted for 3.5 h; added 270 g of propylene oxide and 1.8 g of benzyltriethylammonium chloride, continued the reaction for 4.5 h, cooled, and discharged; the resulting product was light yellow transparent liquid with an acid value of 1.83 mgKOH / g and a viscosity of It is 7810 mPa.s.

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
acid valueaaaaaaaaaa
densityaaaaaaaaaa
hydroxyl valueaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method for polyhydric alcohol used for flame retardant polyurethane foaming plastic, and belongs to the technical field of high polymer chemistry, reactive flame retardants and building insulation materials. The polyhydric alcohol is prepared by catalytic reaction among triethyl phosphate, phosphorus pentoxide, pentaerythritol and alkylene oxide. The raw materials are low in cost and easy to get, the reaction is mild, the process is simple, and operation and industrial production are easy.

Description

technical field [0001] The present invention relates to a method for preparing polyols used in flame-retardant polyurethane foams, in particular to a method for preparing phosphorus-based flame-retardant polyols used in the preparation of flame-retardant polyurethane foams, which belongs to macromolecule chemistry, reaction type flame retardant Combustion agent, building insulation material technology field. Background technique [0002] my country adheres to the strategy of sustainable development, and the policy of "energy saving and emission reduction" is the main content of implementing the strategy. The building insulation structure with thermal insulation is an important means of building energy saving. Polyurethane foam is indispensable for building energy saving and is widely used. s material. [0003] Polyurethane foam is a low-density microporous polymer material produced by the reaction of polyester or polyether polyols with isocyanate. Because the material has go...

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): C08G65/28C08G18/50C08G18/76C08G18/18C08G101/00
Inventor 匡轩王刚王志玲张书香
Owner UNIV OF JINAN
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com