Leather with fluorochemical finish

Claim 2

A process for imparting oil and water repellency to a fibrous substrat- with fluorochemicals, characterized by the feature that said fluorchemicals are fluorochemical compounds which are normally solid, water insoluble, aliphatic carboxylic acids and salts thereof which are self-dispersible in water, said compounds containing fluoroaliphatic and aliphatic carboxylic radicals and ureylene, carbamato, carbonamido, and/or carbonyloxy radicals, said radicals bonded together by organic linkages.

Claim 3

The process of claim 1 further characterized by the feature that said compounds are represented by the formula where R is a fluoroaliphatic radical or an aliphatic radical, Q is an organic linkage, Q' is Q or Q-A-Q, A is -NHCONH-, -CONH-, -OCO-, or --OCONH-, M is a hydrogen atom or an alkali metal, ammonium, or organoammonium ion, m is 1 or 2, with the provisos that if m is 1, R is said fluoroaliphatic radical, and if m is 2, at least one of the two R radicals is a fluoroaliphatic radical, and n is zero or 1.

Claim 4

The process of claim 1 further characterized by the feature that said compounds are represented by the formula where R f is a fluoroaliphatic radical, A is -NHCONH-, -CONH-, -OCO-, or -OCONH-, and M is a hydrogen atom or an alkali metal, ammonium, or organoammonium ion, Q is an organic linkage, Q' is Q-A-Q.

Claim 5

The process of claim 1 further characterized by the feature that said compounds are represented by the formula where R f is a fluoroaliphatic radical, A is -NHCONH-, -CONH-, -OCO-, or -OCONH-, M is a hydrogen atom or an alkali metal, ammonium, or organoammonium ion, Q is an organic linkage, Q' is Q-A-Q.

Claim 6

The process of claim 1 further characterized by the feature that said compounds are represented by the formula where R f is a fluoroaliphatic radical, R h is an aliphatic radical Q is an organic linkage, A is -NHCONH-, -CONH-, -OCO-, or -OCONH-, 0' is Q-A-Q', and M is a hydrogen atom or an alkali metal, ammonium, or organoammonium ion.

Claim 7

The process according to claim 1, wherein said fluorochemical compound characterized by the formula: or by the formula:

Claim 8

The process for imparting oil and water repellency according to any of the foregoing claims wherein said substrate is tanned leather, such as chrome-tanned cattlehide, and said process is characterized further by contacting said tanned leather during the wet processing thereof with said fluorochemical compounds as an aqueous dispersion of the water-dispersible salt thereof added to the post tanning drum.

Claim 9

A fibrous substrate having deposited on a surface thereof fluorochemical compound characterized by said compound being that recited in claim 1.

Claim 10

Chrome-tanned leather having fluorochemical compound deposited on a surface thereof to impart oil and water repellency to said surface characterized by said compound being that recited in claim 2.

Claim 11

Fluorochemical compounds, useful in the process of claim 1, which are characterized as normally solid, water insoluble, aliphatic carboxylic acids and salts thereof which are self-dispersible in water, said compounds containing fluoroaliphatic and aliphatic carboxylic radicals and ureylene, and/or carbamato radicals, said radicals bonded together by organic linkages.

Claim 12

The compounds of claim 10 further characterized by the formula where R is a fluoroaliphatic radical or an aliphatic radical, Q is an organic linkage, Q' is Q or Q-A-Q, A is -NHCONH-, or -OCONH-, M is a hydrogen atom or an alkali metal, ammonium, or organoammonium.ion, m is 1 or 2, with the provisos that if m is 1, R is said fluoroaliphatic radical, and if m is 2, at least one of the two R radicals is a fluoroaliphatic radical, and n is zero or 1.

Claim 13

The compounds of claim 10 further characterized by the formula where R f is a fluoroaliphatic radical, A is -NHCONH-, or -OCONH-, and M is a hydrogen atom or an alkali metal, ammonium, or organoammonium ion, Q is an organic linkage, Q' is Q-A-Q.

Claim 14

The compounds of claim 10 further characterized by the formula where R f is a fluoroaliphatic radical, A is -NHCONH-, -CONH-,.-OCO-, or -OCONH-, M is'a hydrogen atom or an alkali metal, ammonium, or organoammonium ion, Q is an organic linkage, Q' is Q-A-Q.

Claim 15

The compounds of claim 10 further characterized by the formula where R f is a fluoroaliphatic radical, R h is an aliphatic radical Q is an organic linkage, A is -NHCONH-, or -OCONH-, Q' is Q-A-Q', and M is a hydrogen atom or an alkali metal, ammonium, or organoammonium ion.

Claim 16

A compound of claim 10 further characterized by the formula or