US3832409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aldehyde condensation products of fluoroaliphatic phenols
Assignee: Individual
•
Filing: 1970-10-29
•
Granted: 1974-08-27
•
Expires: 1990-10-29
Abstract
Abstract Condensation products of aldehydes and fluoroaliphatic phenols are substantive to wool, synthetic polyamides, leather and skin, the compositions preferably being extended with a suitable pharmaceutical medium. The condensation products are useful for the preparation of compositions that render such materials oil and water repellent.
Inventors
- 👤 L Gehlhoff
- 👤 D Zimmerman
- 👤 L Endres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:16
CPC Classifications
A; A61; A61Q; A61Q17/00; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/69; A61K8/70; C; C07; C07C; C07C37/00; C07C37/001; C07C37/002; C07C37/003; C07C37/01; C07C37/055; C07C37/0555; C08; C08G; C08G8/00; C08G8/04; C08G8/08
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
25 words
A condensation polymer of claim 1 of formaldehyde and 2-(2''-chloro-3''-perfluoroalkyl)-n-propylphenol wherein the perfluoroalkyl group is a monovalent radical containing from three to 20 carbon atoms.
Claim 2
Dependent Claim
10 words
The polymer of claim 2 wherein the phenol is 2-(2''-chloro-3''-perfluorooctyl)-n-propylphenol.
Claim 3
Dependent Claim
13 words
A polymer according to claim 1 wherein Q is a monochloro-substituted alkylene chain.
Claim 4
Dependent Claim
10 words
A polymer according to claim 4 wherein Q is -CH2CHClCH2-.
Claim 5
Dependent Claim
12 words
A polymer according to claim 5 wherein the phenol is 2-(2''-chloro-3''-perfluorooctyl)-n-propyl phenol.
Claim 6
Dependent Claim
12 words
A polymer according to claim 1 wherein the phenol is 2-perfluorooctyl phenol.
Claim 7
Dependent Claim
18 words
A polymer according to claim 5 wherein the phenol is an isomeric mixture of 3- and 5-chloro-2-(2''-chloro-3''-perfluorooctyl)-n-propyl phenol.
Claim 8
Dependent Claim
10 words
A polymer according to claim 1 wherein Q is -CH2CH2CH2-.
Claim 9
Dependent Claim
12 words
A polymer according to claim 1 wherein A is a benzene ring.
Claim 10
Dependent Claim
12 words
A polymer according to claim 10 wherein the phenol has the formula
Claim 11
Dependent Claim
12 words
A polymer according to claim 11 wherein Rf is a perfluorooctyl group.
Claim 12
Dependent Claim
11 words
A polymer according to claim 1 wherein the aldehyde is formaldehyde.
Claim 13
Dependent Claim
26 words
A condensation polymer having an average molecular weight of about 900 to about 2,500 of the condensation catalyst catalyzed reaction of a phenol of the formula
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |