Oxaphosphaphenanthrene fire retardant containing cyclotriphosphazene and cup [4] aromatic ring structures as well as preparation method and application of oxaphosphaphenanthrene fire retardant
A technology of cyclotriphosphazene and oxaphosphaphenanthrene, which is applied in the field of phosphorus-nitrogen synergistic flame-retardant compounds, can solve the problems of not being able to meet the processing temperature of polymer materials, and achieve easy industrial production, good thermal stability, and high phosphorus content Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0029] Compound A preparation method of an oxaphosphaphenanthrene flame retardant containing cyclotriphosphazene and a calix[4] aromatic ring structure, the steps are:
[0030] Dissolve 8.62g (10.0mmol) of hexa-hydroxyphenoxy cyclotrimeric phosphazene and 10.8g (50.0mmol) of DOPO in 100mL of methanol-chlorobenzene (V 甲醇 / V 氯苯 =1:1), stirring, reflux, cooling, filtering, recrystallization, and drying to obtain the crude product, the crude product was recrystallized with an equal volume of dichloromethane-petroleum ether mixed solvent to obtain the oxaphosphaphenanthrene intermediate containing the cyclotriphosphazene structure Body I (white solid), yield 89.2%.
[0031] Add 4.44 g (6.0 mmol) of p-tert-butylcalix[4]arene and 1.65 g (12.0 mmol) of potassium carbonate into a three-necked flask with 100 mL of acetonitrile, stir at room temperature for 2.0 h, and then add p-toluenesulfonate group 1.92 g (6.0 mmol) of ethoxy-p-benzaldehyde was refluxed for 45 hours while stirring. ...
Embodiment 2
[0040] The solvent was changed into 100mL ethanol-chlorobenzene (V乙醇 / V 氯苯 =1:1), the others are the same as Example 1, the yield of intermediate I is 86.1%, and the melting point is 212-213°C.
[0041] The solvent was changed into 100mL tetrahydrofuran-chlorobenzene (V 四氢呋喃 / V 氯苯 =1:1), the others are the same as Example 1, the yield of intermediate I is 83.2%, and the melting point is 212-214°C.
Embodiment 3
[0043] The solvent was changed to 100 mL of chloroform and 100 mL of absolute ethanol, and the others were the same as in Example 1. The yield of the target compound was 85.7%, and the melting point was 1 and the melting point was 212-214° C.
[0044] The solvent was changed to 100 mL of chloroform and 100 mL of tetrahydrofuran, and the others were the same as Example 1. The yield of the target compound was 82.1%, and the melting point was 212-214° C.
PUM
Property | Measurement | Unit |
---|---|---|
melting point | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com