5,5-bis (perfluoroalkylheteromethyl)-2-hydroxy-2-oxo-1,3,2-dioxaphosphorinanes, and salts or esters thereof
US5132445A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1991 |
| Grant date | Jul 21, 1992 |
| Priority date | — |
| Expiry date | Nov 13, 2011 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H19/46
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
5, 5-Bis(perfluoroalkylheteromethyl)-2-hydroxy-2-oxo-1,3,2-dioxaphosphorinane s, derived acyclic phosphorus and phosphoric acids obtained by ring-opening, and salts or esters thereof are prepared from heteroatom containing perfluoroalkyl terminated neopentyl glycols of the formula: HO[CH.sub.2 C(CH.sub.2 -X-E.sub.n -R.sub.f).sub.2 CH.sub.2)]H by cyclization with appropriate phosphorus containing esters or acids, or hydrolysis. These compositions provide improved thermal stability, and useful low surface energy oil and water repellent coatings for textiles, glass, paper, leather and other materials. Another aspect of this invention relates to the use of the phosphite group containing products as polymer stabilizers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.