US3986973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyanoformates and cyanoformamides as bleach activators
Assignee: Wyeth Holdings LLC
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Filing: 1975-10-24
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Granted: 1976-10-19
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Expires: 1995-10-24
Abstract
Abstract Cyanoformates and cyanoformamides of the formula ##EQU1## wherein A represents a radical selected from --OR and ##EQU2## said R, R 1 and R 2 individually being selected from lower alkyl, unsubstituted phenyl or naphthyl and substituted phenyl or naphthyl wherein the substituents are individually selected from lower alkyl, lower alkoxy, hydroxy, halo and nitro radicals are bleach activators of high strength and good activity at low temperatures in peroxygen bleaching compositions.
Inventors
- 👤 Frank Fred Loffelman
- 👤 Robert Edward Misner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:34
CPC Classifications
C; C07; C07C; C07C255/00; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3907; C11D3/3917; C11D3/3925; D; D06; D06L; D06L4/00; D06L4/10; D06L4/12; D21; D21C; D21C9/00; D21C9/10; D21C9/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
73 words
A bleaching composition comprising hydrogen peroxide or a hydrogen peroxide releasing compound and an activating amount of a nitrile compound represented by the formula: ##EQU4## wherein A is a radical selected from -OR and ##EQU5## said R, R 1 and R 2 individually being selected from lower alkyl, unsubstituted phenyl or naphthyl and substituted phenyl or naphthyl wherein the substituents are individually selected from lower alkyl, lower alkoxy, hydroxy, halo and nitro radicals.
Claim 2
Dependent Claim
73 words
A bleaching composition comprising hydrogen peroxide or a hydrogen peroxide releasing compound and an activating amount of a nitrile compound represented by the formula: ##EQU4## wherein A is a radical selected from -OR and ##EQU5## said R, R 1 and R 2 individually being selected from lower alkyl, unsubstituted phenyl or naphthyl and substituted phenyl or naphthyl wherein the substituents are individually selected from lower alkyl, lower alkoxy, hydroxy, halo and nitro radicals.
Claim 3
Dependent Claim
27 words
A bleaching composition according to claim 1 wherein the mole ratio of the nitrile compound to the hydrogen peroxide-releasing compound is from about 1:1 to about 1:10.
Claim 4
Dependent Claim
19 words
A bleaching composition according to claim 1 wherein the hydrogen peroxide releasing compound is sodium perborate or sodium percarbonate.
Claim 5
Dependent Claim
14 words
A composition according to claim 3 wherein the nitrile compound has the formula: ##STR7##
Claim 6
Dependent Claim
14 words
A composition according to claim 3 wherein the nitrile compound has the formula: ##STR8##
Claim 7
Dependent Claim
14 words
A composition according to claim 3 wherein the nitrile compound has the formula: ##STR9##
Claim 8
Dependent Claim
14 words
A composition according to claim 3 wherein the nitrile compound has the formula: ##STR10##
Claim 9
Dependent Claim
14 words
A composition according to claim 3 wherein the nitrile compound has the formula: ##STR11##
Claim 10
Dependent Claim
10 words
A bleaching composition according to claim 1 containing a detergent.
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) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |