Heteroatom containing perfluoroalkyl terminated neopentyl glycols and compositions therefrom
US4898981A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1988 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Jun 20, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2200/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Heteroatom containing perfluoroalkyl terminated neopentyl glycols of the formula HO[--CH.sub.2 C(CH.sub.2 X--E--R.sub.f).sub.2 CH.sub.2 O].sub.1-3 --H prepared from halogenated neopentyl glycols and thiols of the formula R.sub.f --E--SH, or amines of the formula R.sub.f --E--NH--R wherein R.sub.f is a hydrophonic, olephobic fluoroaliphatic group of up to 20 carbon atoms, E is alkylene of up to 10 carbon atoms, optionally interrupted by up to three groups including --NR, --O, --S--, --SO.sub.2 --, --O.sub.2 C, CONR, and --SO.sub.2 NR, and X is S,SO.sub.2 or NR.sub.2, where R is independently hydrogen, alkyl, or hydroxyalkyl of 1 to 6 carbon atoms are described. The polymeric reaction products of said fluorinated diols, and optionally other diols with isocyanates to prepare polyurethanes; with amines and isocyanates, to prepare polyureas/polyurethanes; with acids or derivatives, to prepare polyesters or polycarbonates are disclosed. These include polymeric, random or block urethane, and/or urea, and/or ester compositions containing the residue of at least one R.sub.f -neopentyl glycol containing two perfluoroalkylhetero groups. These polymeric compositions provide improved thermal st…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.