Phosphorous flame retardant and application thereof to polymer
US8487043B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2010 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Jul 22, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/5399
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A phosphorous flame retardant primarily includes hexachlorotriphosphazene (HCP) having poly(oxyalkylene)amine substitutes. The poly(oxyalkylene)amine includes at least two end groups. The phosphorous flame retardant can further include layered silicate clay. The layered silicate clay can be intercalated and modified with the poly(oxyalkylene)amine substitutes of HCP to effectively promote thermal stability. The flame retardant, phosphazene-poly(oxyalkylene)amine adducts, can be applied to a polymer. By the cross-linking between them, the flame-retarding property of the polymer can be improved. Also provided is a method for producing the flame retardant of phosphazene-poly(oxyalkylene)amine adducts and application thereof to a polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.