US3699173A
Expired / Lapsed
US
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Emulsifiable polymeric hindered phenols and their use as stabilizers
Assignee: Olin Corp
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Filing: 1971-03-22
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Granted: 1972-10-17
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Expires: 1991-03-22
Abstract
Abstract Water-emulsifiable hindered polymeric phenols particularly used as stabilizers in polymeric latex compositions are prepared by condensing a hindered phenol with a water-soluble or wateremulsifiable phenolic compound. Typical polymeric hindered phenols are ethoxylated polymeric alkyl-hindered phenols having the structure: WHEREIN R represents an ortho C4-C12 alkyl group, n is a number from 10 to 80 and x is 1, 2 or 3. Such ethoxylated polymeric hindered phenols are prepared by polymerizing a dialkyl hindered phenol with ethoxylated alkyl phenol employing formaldehyde in an acid medium.
Inventors
- 👤 Edward V Osberg
- 👤 Walter Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:25
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08G; C08G14/00; C08G14/02; C08G14/04; C08J; C08J3/00; C08J3/02; C08J3/03; C08J3/05
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
16 words
The phenol of claim 1 wherein R1 is a methyl, tertiary butyl, octyl or nonyl radical.
Claim 2
Dependent Claim
12 words
The phenol of claim 1 wherein R4 is ethylene as obviously intended.
Claim 3
Dependent Claim
38 words
The phenol of claim 1 wherein R1 in the ortho position is a tertiary butyl, octyl or nonyl radical, R2 and in the para position R1 are methyl, octyl or nonyl radicals, and R4 is a -CH2CH2- radical.
Claim 4
Dependent Claim
15 words
The phenol of claim 1 wherein n is a number from about 10 to 60.
Claim 5
Dependent Claim
12 words
The phenol of claim 1 wherein R2 is a C8-C9 alkyl radical.
Claim 6
Dependent Claim
25 words
The phenol of claim 1 where x is 1, R, is nonyl, R2 is nonyl, R3 is methylene, R4 is ethylene and n is 11.
Claim 7
Dependent Claim
25 words
The phenol of claim 1 where x is 1, R1 is nonyl, R2 is octyl, R3 is methylene, R4 is ethylene and n is 9.
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |