Patent US2158198A successfully refreshed from Google Patents.
Patent US3870682A successfully refreshed from Google Patents.
US3870682A
Expired / Lapsed
US
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Aldehyde condensation products of fluoraliphatic phenols
Assignee: 3M Co
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Filing: 1974-01-23
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Granted: 1975-03-11
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Expires: 1994-01-23
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
- 👤 Leland S Endres
- 👤 Leo F Gehlhoff
- 👤 Dallas D Zimmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:22
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/04; C08G8/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
26 words
A CONDENSATION POLYMER HAVING AN AVERAGE MOLECULER WEIGHT OF ABOUT 800 TO ABOUT 1,500 OF THE CONDENSATION CATALYST CATALYZED REACTION OF A PHENOL OF THE FORMULA
Claim 2
Dependent Claim
26 words
A CONDENSATION POLYMER HAVING AN AVERAGE MOLECULER WEIGHT OF ABOUT 800 TO ABOUT 1,500 OF THE CONDENSATION CATALYST CATALYZED REACTION OF A PHENOL OF THE FORMULA
Claim 3
Dependent Claim
26 words
A condensation polymer having an average molecular weight of about 800 to about 1,500 of the condensation catalyst catalyzed reaction of a phenol of the formula
Claim 4
Dependent Claim
26 words
A condensation polymer having an average molecular weight of about 800 to about 1,500 of the condensation catalyst catalyzed reaction of a phenol of the formula
Claim 5
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
Claim 6
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
Claim 7
Dependent Claim
11 words
A polymer according to claim 1 wherein the aldehyde is formaldehyde.
Claim 8
Dependent Claim
10 words
The polymer according to claim 3 wherein the phenol is
Claim 9
Dependent Claim
10 words
The polymer according to claim 3 wherein the phenol is
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |