US3681374A
Expired / Lapsed
US
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Synthetic nacreous triazole crystals and method for production thereof
Assignee: Asahi Kasei Corp
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Filing: 1970-08-11
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Granted: 1972-08-01
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Expires: 1990-08-11
Abstract
Abstract Pearl luster is developed by synthetic, nacreous, flake-shaped crystals of triazole compounds having a maximum length of 5 to 100 microns and a thickness of 500 to 1,200 A which are obtained by cooling a solution of a triazole compound in the presence of a surface active agent. The synthetic nacreous crystals are added to aqueous or alcoholic cosmetic lotions, soaps, milky lotions or pigment dispersions, whereby articles having elegant pearl luster can be obtained.
Inventors
- 👤 Nobumitsu Yano
- 👤 Masao Fukushima
- 👤 Itaru Fukinbara
- 👤 Masanori Kishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:29
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/02; C07D249/08; C07D249/10; C07D249/12; C07D249/14; Y; Y10; Y10S; Y10S106/00; Y10S106/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
19 words
Nacreous flake-shaped crystals according to claim 1, wherein the 1,2,4-triazole compound is guanazole, urazole, guanazine, 5-phenyl-3-hydroxy-1,2,4-triazole, 5-amino-3-carboxy-1,2,4-triazole or 3-mercapto-1,2,4-triazole.
Claim 2
Independent Claim
39 words
A method for producing synthetic nacreous crystals which comprises cooling at a temperature not higher than 50* C. in the presence of a surface active agent a solution of at least one 1, 2,4-triazole compound represented by the formula,
Claim 3
Dependent Claim
20 words
A method according to claim 3, wherein the 1,2,4-triazole compound is guanazole, urazole, guanazine, 5-phenyl-3-hydroxy-1, 2,4-triazole, 5-amino-3-carboxy-1,2,4-triazole or 3-mercapto-1,2, 4-triazole.
Claim 4
Dependent Claim
21 words
A method according to claim 3, wherein the surface active agent is a cationic, anionic, amphoionic or nonionic surface active agent.
Claim 5
Dependent Claim
43 words
A method according to claim 5, wherein the cationic surface active agent is an amine, a salt thereof, a quaternary ammonium salt, a pyridinium salt, a picolinium salt, a zelanium salt, a belanium salt, an amine-formaldehyde condensation product or a stearon chromic chloride.
Claim 6
Dependent Claim
37 words
A method according to claim 5, wherein the anionic surface active agent is an alkyl sulfate, an alkylbenzene sulfonate, an alkylnaphthalene sulfonate, a naphthalene sulfonate-formaldehyde condensation product, an alkyl phosphate, an amidosulfonate or a sulfo-succinate dialkyl ester.
Claim 7
Dependent Claim
19 words
A method according to claim 5, wherein the amphoionic surface active agent is an alkylbetaine or a hydroxyethylimidazoline sulfonate.
Claim 8
Dependent Claim
31 words
A method according to claim 3, wherein the concentration of the surface active agent is 1 to 0.001 percent by weight based on the weight of the solution of triazole compounds.
Claim 9
Dependent Claim
22 words
A method according to claim 3, wherein the surface active agent is added from the beginning to the solution of triazole compound.
Claim 10
Dependent Claim
24 words
A method according to claim 3, wherein the surface active agent is added immediately before deposition of initial fine crystals of the triazole compound.
Claim 11
Dependent Claim
24 words
A method according to claim 3, wherein the surface active agent is added immediately after deposition of initial fine crystals of the triazole compound.
Claim 12
Dependent Claim
24 words
A method according to claim 3, wherein said solution of at least 1,2,4-triazole compound is cooled at a temperature between 5* to 50* C.
References Cited (Backward Citations)
GB222881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |