Hydroxypropylated ammonium carbonate compound mixture, preparation method and use

A technology of hydroxypropylated carbonic acid and compounds, which is applied in the field of polyurethane foaming, can solve the problems of consumption of NCO groups, difficulty in controlling the foaming process, decrease in strength, thermal insulation performance and dimensional stability of polyurethane foam materials, and achieve good size Excellent stability and compatibility

Active Publication Date: 2018-02-13
唐宇煊
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although attempts have been made to directly convert CO 2 As a polyurethane blowing agent, however, due to CO 2 As a gas, its miscibility in foaming raw materials composed of MDI and polyester polyols and / or polyether polyols is very poor and escapes quickly at higher temperatures in the foaming process, making the foaming process difficult to control, The quality of the foamed product (the uniformity of cell size) is unsatisfactory
[0007] In addition, people also try to directly use a small amount of water as polyurethane foaming agent, but the miscibility of water in the foaming raw material is also not good, and water exists in the foaming composition in the form of molecular clusters or molecular groups, and water and The reaction of isocyanate groups leads to the consumption of NCO groups, leading to a significant decrease in the strength, thermal insulation properties and dimensional stability of polyurethane foams

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
  • Hydroxypropylated ammonium carbonate compound mixture, preparation method and use
  • Hydroxypropylated ammonium carbonate compound mixture, preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0040] The preparation of the product and the performance test of the foam material are completed in the laboratory of Beijing University of Chemical Technology.

[0041] In the examples, various properties of the foam were tested according to the Chinese national standard GB / T 26689-2011 (rigid polyurethane foam for refrigerators and freezers). The size of the sample is generally 10*10*2.5cm.

[0042] The thermal conductivity is carried out according to GB / T 10294-2008 or GB / T 10295-2008. The average temperature is 10°C, and the temperature difference between the hot and cold plates is 15-20°C. The apparent (core) density is tested according to GB / T 6343-2009. Compressive strength is tested according to GB / T 8813-2008.

[0043] For the measurement method of the content of the compound of general formula (I) or (II) as a foaming agent, carbon dioxide is first released by heating to above 70° C., and the remainder (ie alcohol amine compound) is gas chromatographically used. ...

preparation example 1

[0045] The ammonium carbonate (molecular weight 96) of 1.4kg, the water of 1kg and the catalyst of 24g (the weight ratio of monopropanolamine and concentration 25wt% ammonia water is the mixture of 1:1) join in the stainless steel reactor, start to stir, form carbonic acid ammonium in the slurry, then add 2.0kg of propylene oxide, stir and cool, control the pressure not higher than 0.6MPa, slowly raise the temperature to react, control the temperature to remain below 60°C and react for 14 hours. After the reaction is completed, slowly lower the temperature to below 50°C, slowly remove part of the water and unreacted propylene oxide under a vacuum of about 600 mm Hg, then release the vacuum, cool down to below 40°C and discharge the reaction to obtain a water-containing mixture of carbonate amine salt compounds (compound 1 for short). The viscosity is about 400 centipoise, pH=9.1, and the decomposition temperature of compound 1 is 58-63°C. The content of alkali metal and alkal...

Embodiment 1

[0049] 7.5 parts by weight of polyether polyol 4110 (Binhua Group, Binzhou City, Shandong Province) of compound 1, 50 parts by weight of foam stabilizer DC3201 (American Gas Products) prepared by the above preparation example 1 as foaming agent company), 12.5 parts by weight of flame retardant TCPP (Jiangsu Yake chemical industry) and 2 parts by weight of catalyst A33 (33LV, U.S. Gas Products Company) mixed uniformly to obtain a transparent foaming composition, then add 95.5 parts of isocyanate MDI ( PM200, Yantai Wanhua), foamed after stirring evenly to obtain polyurethane foam.

[0050] Foam density: 34.45Kg / m 3 ; Thermal conductivity w / m·k (10°C): 0.02072; Compressive strength (KPa): 175.2; Shrinkage rate: <0.5%.

[0051] The foam product of Example 1 has good thermal insulation performance and can meet various performance requirements in the field of refrigerators and freezers.

[0052] Take the sample, slice it with a razor blade, and use SEM to magnify it 100 times to ...

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
decomposition temperatureaaaaaaaaaa
densityaaaaaaaaaa
compressive strengthaaaaaaaaaa
Login to view more

Abstract

An N-hydroxypropyl ammonium carbonate compound-containing aqueous organic alcohol amine mixture. The mixture is shown as formula: (RN+H3)(N+H4)CO3 2- (IA) or (RN+H3)2CO3 2- (IIA), R being hydroxypropyl; the mole ratio of the compound in general formula (IA) to the compound in general formula (IIA) is 1:0 to 1:2.5. Also provided is a composite foaming agent, comprising: 1) hexafluorobutene; 2) an alcohol amine salt mixture (MAA). The alcohol amine salt mixture (MAA) comprises an organic amine salt compound having the following general formula (IA): An-[Bm+]p (IA), wherein An- is one or two or three selected from the following anions: (b) carbonate radical: CO3 2-; (c) formate: HCOO-; (d) bicarbonate radical: HO-COO-. The composite foaming agent is suitable for being used as a polyurethane foaming agent. The obtained polyurethane foam material has good heat insulation performance, deep-cooling heat insulation performance and good dimensional stability.

Description

technical field [0001] The present invention relates to N-hydroxypropylated ammonium carbonate compound mixtures, in particular to an aqueous organic alcoholamine mixture comprising N-hydroxypropylated ammonium carbonate compounds, their preparation process and their use as polyurethane foaming agents , belongs to the field of polyurethane foam. technical background [0002] At present, the frequent occurrence of smog weather has caused people to pay more attention to vehicle exhaust and industrial exhaust emissions. In addition, the trend of global temperature warming is becoming more and more obvious, and controlling the emission of greenhouse gases has become the common wish of the whole society. On December 12, 2015, nearly 200 parties to the "United Nations Framework Convention on Climate Change" reached the "Paris Agreement" at the Paris Climate Change Conference, making arrangements for the global response to climate change after 2020. In the past, the hole in the o...

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): C08J9/08C08G18/76C08G18/48
CPCC08G18/48C08G18/7671C08J9/08C08J2203/02C08J2203/10C08G2110/005
Inventor 唐宇煊
Owner 唐宇煊
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap