US4539006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leather treatment
Assignee: 3M Co
•
Filing: 1984-08-01
•
Granted: 1985-09-03
•
Expires: 2004-08-01
Abstract
Abstract Composition useful for treating leather, textiles, and cellulosic materials to impart a high degree of water and oil repellancy thereto. The composition contains a fluorochemical compound having (a) a fluoroaliphatic moiety, (b) an aliphatic moiety, and (c) an organic group which connects moiety (a) and moiety (b).
Inventors
- 👤 Nathaniel P. Langford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:13
CPC Classifications
C; C14; C14C; C14C9/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
161 words
Method of treating a material selected from the group consisting of leather, textiles, and cellulosics in order to provide enhanced water and oil repellancy thereto comprising the step of applying to said material a composition comprising a compound represented by the formula: R.sub.f --Q--A wherein R f represents a member selected from the group consisting of ##STR14## n represents a positive integer from 3 to 20, inclusive, R represents an alkyl radical having 1 to 4 carbon atoms, R 1 represents an alkylene radical having 1 to 12 carbon atoms, R 2 represents an alkylene radical having 1 to 4 carbon atoms, A represents a hydrocarbon group having from 5 to 36 carbon atoms, said hydrocarbon group having at least one unsaturated site, said hydrocarbon group optionally being substituted with a hydroxyl group or a carboxyl group, Q represents a member selected from the group consisting of ##STR15## wherein T represents an aliphatic group, a cycloaliphatic group, or an aromatic group.
Claim 2
Dependent Claim
161 words
Method of treating a material selected from the group consisting of leather, textiles, and cellulosics in order to provide enhanced water and oil repellancy thereto comprising the step of applying to said material a composition comprising a compound represented by the formula: R.sub.f --Q--A wherein R f represents a member selected from the group consisting of ##STR14## n represents a positive integer from 3 to 20, inclusive, R represents an alkyl radical having 1 to 4 carbon atoms, R 1 represents an alkylene radical having 1 to 12 carbon atoms, R 2 represents an alkylene radical having 1 to 4 carbon atoms, A represents a hydrocarbon group having from 5 to 36 carbon atoms, said hydrocarbon group having at least one unsaturated site, said hydrocarbon group optionally being substituted with a hydroxyl group or a carboxyl group, Q represents a member selected from the group consisting of ##STR15## wherein T represents an aliphatic group, a cycloaliphatic group, or an aromatic group.
Claim 3
Dependent Claim
21 words
The method of claim 1 wherein the composition further includes at least one organic solvent as a vehicle for said compound.
Claim 4
Dependent Claim
12 words
The method of claim 2 wherein the composition further includes a propellant.
Claim 5
Dependent Claim
13 words
The method of claim 2 wherein the composition further includes a gelling agent.
Claim 6
Dependent Claim
11 words
The method of claim 4 wherein the composition further includes water.
Claim 7
Dependent Claim
13 words
The method of claim 5 wherein the composition further includes an emulsifying agent.
Claim 8
Dependent Claim
12 words
The method of claim 1 wherein the material being treated is leather.
Claim 9
Dependent Claim
27 words
Article made from a material selected from the group consisting of leather, textiles, cellulosics, and combination thereof bearing a coating applied by the method of claim 1.
Claim 10
Dependent Claim
64 words
Composition for treating leather, textiles, and cellulosic materials in order to provide enhanced water and oil repellancy thereto, said composition comprising: (a) a compound represented by the formula R.sub.f --Q--A wherein R f represents a member selected from the group consisting of ##STR16## n represents a positive integer from 3 to 20, inclusive, R represents an alkylene radical having 1 to 4 carbon atoms,
Claim 11
Dependent Claim
64 words
Composition for treating leather, textiles, and cellulosic materials in order to provide enhanced water and oil repellancy thereto, said composition comprising: (a) a compound represented by the formula R.sub.f --Q--A wherein R f represents a member selected from the group consisting of ##STR16## n represents a positive integer from 3 to 20, inclusive, R represents an alkylene radical having 1 to 4 carbon atoms,
Claim 12
Dependent Claim
12 words
R 1 represents an alkylene radical having 1 to 12 carbon atoms,
Claim 13
Dependent Claim
12 words
R 1 represents an alkylene radical having 1 to 12 carbon atoms,
Claim 14
Dependent Claim
96 words
R 2 represents an alkylene radical having 1 to 4 carbon atoms; A represents a hydrocarbon group having from 5 to 36 carbon atoms, said hydrocarbon group having at least one unsaturated site, said hydrocarbon group optionally being substituted with a hydroxyl group or a carboxyl group; Q represents a member selected from the group consisting of ##STR17## wherein T represents an aliphatic group, a cycloaliphatic group, or an aromatic group; and (b) a vehicle that is not deleterious to said leather, dyes that have been applied to said leather, said textiles, or said cellulosic materials.
Claim 15
Dependent Claim
96 words
R 2 represents an alkylene radical having 1 to 4 carbon atoms; A represents a hydrocarbon group having from 5 to 36 carbon atoms, said hydrocarbon group having at least one unsaturated site, said hydrocarbon group optionally being substituted with a hydroxyl group or a carboxyl group; Q represents a member selected from the group consisting of ##STR17## wherein T represents an aliphatic group, a cycloaliphatic group, or an aromatic group; and (b) a vehicle that is not deleterious to said leather, dyes that have been applied to said leather, said textiles, or said cellulosic materials.
Claim 16
Dependent Claim
17 words
The composition of claim 9 wherein said vehicle comprises at least one organic solvent for said compound.
Claim 17
Dependent Claim
12 words
The composition of claim 10 wherein said vehicle further comprises a propellant.
Claim 18
Dependent Claim
13 words
The composition of claim 10 wherein said vehicle further comprises a gelling agent.
Claim 19
Dependent Claim
8 words
The composition of claim 12 further including water.
Claim 20
Dependent Claim
10 words
The composition of claim 13 further including an emulsifying agent.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-02 | 1989-03-04 | 1989-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-02 | 1993-03-04 | 1993-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-02 | 1997-03-04 | 1997-09-03 | $7700.00 | Window Closed / Lapsed |