(Haloneocarbyl-substituted)-bis(aliphatic hydrocarbyl)phosphorates with polyurethanes
US4686241A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1986 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Apr 28, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/521
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Included are the title phosphorate compounds, and a process to prepare them comprising contacting a carbylphosphorate acid halide with a carbyloxide. For example, (3-chloro-2,2-bis(bromomethyl)propyl)bis(ethyl)phosphorate can be prepared with 3,3-bis(bromomethyl)oxetane and bis(ethyl)chloridophosphorate. The compounds are useful flame retardants for polyurethanes, especially flexible foams because, for example, substantially non-scorching and non-odoriferous flame-retardant flexible foams can be readily prepared with the compounds. Also included is a method for inducing scorch in polyurethanes, which can be used to generally determine polyurethane formulations which are prone to not scorch in commercial production.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.