Patent · US Expired

Process for the production of perfluoroalkyl residue containing condensation products, the condensation products prepared accordingly, and their use

US4477498A · kind A · utility

21Cited by

8References

8Claims

0Family size

Assignee

Ciba-Geigy · US

Inventors

Hans Deiner · Neusäß, DE
Franz Mosch · Gessertshausen, DE
Bernhard Sandner · Geretsried, DE
Willy Bernheim · Diedorf, DE

Key dates

Filing date	Aug 13, 1982
Grant date	Oct 16, 1984
Priority date	—
Expiry date	Aug 13, 2002

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D251/70
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to new condensation products of PA0 (A) 1 mole of a highly etherified hexamethylol melamine and PA0 (B) 3 to 6 moles of a thiol of the formula EQU R.sub.f --X--SH, (1) PA0 Rf standing for perfluorinated alkyl with 4 to 14 C-atoms and X for divalent ethylene or isopropylene radicals, wherein the components (A) and (B) are reacted under increasing temperature up to at least 145.degree. C. within a period of at least 40 minutes. In form of their aqueous dispersions, the condensation products are suitable for oil- and water-repellent finishing of fibrous, preferably textile materials.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.