Fluoroaliphatic radical containing carbodiimides
First Claim
1. A solvent-soluble fluoroaliphatic radical-containing carbodiimide consisting essentially of from 1 to a plurality of carbodiimide groups, terminal organic radicals derived from mono- or polyisocyanate and free from isocyanate-reactive hydrogen atoms and connected to carbodiimide and, when two or more carbodiimide groups are present, polyvalent organic linking groups derived from organic polyisocyanate and free from isocyanate-reactive hydrogen atoms linking successive carbodiimide groups;
- fluoroaliphatic groups of 3 to 20 carbon atoms forming a part of said terminal organic radicals or organic linking groups in amounts such that said carbodiimide as a whole includes from 15 to 45% by weight of carbon-bonded fluorine and said carbodiimide as a whole exclusive of fluoroaliphatic radicals contains at least 12% by weight of carbodiimide groups.
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Abstract
Durably launderable and dry-cleanable repellency to water and oil is conferred on fabrics consisting essentially completely of hydrophobic synthetic fibers by application of a blend of a fluoroaliphatic vinyl polymer and a carbodiimide, preferably comprising fluoroaliphatic groups.
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Citations
2 Claims
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1. A solvent-soluble fluoroaliphatic radical-containing carbodiimide consisting essentially of from 1 to a plurality of carbodiimide groups, terminal organic radicals derived from mono- or polyisocyanate and free from isocyanate-reactive hydrogen atoms and connected to carbodiimide and, when two or more carbodiimide groups are present, polyvalent organic linking groups derived from organic polyisocyanate and free from isocyanate-reactive hydrogen atoms linking successive carbodiimide groups;
- fluoroaliphatic groups of 3 to 20 carbon atoms forming a part of said terminal organic radicals or organic linking groups in amounts such that said carbodiimide as a whole includes from 15 to 45% by weight of carbon-bonded fluorine and said carbodiimide as a whole exclusive of fluoroaliphatic radicals contains at least 12% by weight of carbodiimide groups.
- View Dependent Claims (2)
Specification