US4350535A
Expired / Lapsed
US
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Water-dispersible paste composition of metal powder
Assignee: Asahi Kasei Corp
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Filing: 1980-05-22
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Granted: 1982-09-21
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Expires: 2000-05-22
Abstract
Abstract Described is a water-dispersible paste composition of metal powder which contains: (a) metal powders, and; (b) from 0.1 to 20% by weight, based on the weight of the metal powders, of at least one organic phosphoric ester having a general formula [I]: ##STR1## wherein R represents an alkyl group having 6 to 24 carbon atoms, an alkenyl group having 6 to 24 carbon atoms or an aryl group containing at least one alkyl substituent having 6 to 24 carbon atoms or at least one alkenyl substituent having 6 to 24 carbon atoms, A represents an alkylene group having 2 to 4 carbon atoms, m represents an integer of from 0 to 20, and R 1 and R 2 independently represent hydrogen, an alkyl group having 1 to 24 carbon atoms, an alkenyl group having 1 to 24 carbon atoms, an aryl group having 6 to 24 carbon atoms or R--(OA) m (R, A and m are the same as set forth above). This aqueous paste composition of metal powders has an excellent stability in aqueous coating compositions and is capable of controlling the foam initiating time and the expansion rate of cement mortar.
Inventors
- 👤 Shizuo Ishijima
- 👤 Takeshi Kiritani
- 👤 Yukio Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:18
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B22/00; C04B22/02; C04B22/04; C04B24/00; C04B24/003; C09; C09D; C09D17/00; C09D17/004; C09D17/006
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
159 words
A water-dispersible paste composition of metal powders comprising: (a) metal powders, and; (b) from 0.1 to 20% by weight, based on the weight of the metal powders, of at least one organic phosphoric ester having a general formula: ##STR4## where R represents an alkyl group having 6 to 24 carbon atoms, an alkenyl group having 6 to 24 carbon atoms or an aryl group consisting at least one alkyl substituent having 6 to 24 carbon atoms or at least one alkenyl substituent having 6 to 24 carbon atoms, A represents an alkylene group having 2 to 4 carbon atoms, m represents an integer of from 0 to 20, and R 1 and R 2 independently represent hydrogen, an alkyl group having 1 to 24 carbon atoms, an alkenyl group having 1 to 24 carbon atoms, an aryl group having 6 to 24 carbon atoms or R-- (OA) m (R, A and m are the same as set forth above).
Claim 2
Dependent Claim
159 words
A water-dispersible paste composition of metal powders comprising: (a) metal powders, and; (b) from 0.1 to 20% by weight, based on the weight of the metal powders, of at least one organic phosphoric ester having a general formula: ##STR4## where R represents an alkyl group having 6 to 24 carbon atoms, an alkenyl group having 6 to 24 carbon atoms or an aryl group consisting at least one alkyl substituent having 6 to 24 carbon atoms or at least one alkenyl substituent having 6 to 24 carbon atoms, A represents an alkylene group having 2 to 4 carbon atoms, m represents an integer of from 0 to 20, and R 1 and R 2 independently represent hydrogen, an alkyl group having 1 to 24 carbon atoms, an alkenyl group having 1 to 24 carbon atoms, an aryl group having 6 to 24 carbon atoms or R-- (OA) m (R, A and m are the same as set forth above).
Claim 3
Dependent Claim
39 words
A paste composition as claimed in claim 1, wherrein said metal powders are powders of at least one metal selected from the group consisting of aluminum, copper, zinc, nickel, brass, aluminum-copper alloy, aluminum-zinc alloy, aluminum-nickel alloy and aluminum-magnesium alloy.
Claim 4
Dependent Claim
26 words
A paste composition as claimed in claim 1, wherein said water-dispersible paste composition contains, as a pasting agent, from 5 to 50% by weight of water.
Claim 5
Dependent Claim
24 words
A paste composition as claimed in claim 3, wherein the pH of said paste composition is within the range of from 3 to 9.
Claim 6
Dependent Claim
20 words
A paste composition as claimed in claim 1, wherein said composition further comprises at least one nonionic surface active agent.
Claim 7
Dependent Claim
36 words
A paste composition as claimed in claim 1, wherein said metal powders are the aluminum flakes having a size such that the sieving residue through a screen having 149 micron sieve opening is 5% or less.
Claim 8
Dependent Claim
29 words
A paste composition as claimed in claim 1, wherein the amount of the organic phosphoric ester is 1 to 10% by weight, based on the weight of metal powders.
Claim 9
Dependent Claim
18 words
A paste composition as claimed in claim 1, wherein the organic phosphoric ester is an alkyl phosphoric ester.
Claim 10
Dependent Claim
51 words
A paste composition as claimed in claim 8, wherein the alkyl phosphoric ester is a member selected from the group consisting of an alkyl phosphoric monoester, an alkyl phosphoric diester, and an alkyl phosphoric triester, which are octyl phosphate, nonyl phosphate, lauryl phosphate, tridecyl phosphate, stearyl phosphate, and the mixtures thereof.
Claim 11
Dependent Claim
61 words
A paste composition as claimed in claim 5, wherein the nonionic surface active agent is a member selected from the group consisting of a polyoxyethylene alkyl ester, a polyoxyethylene alkyl phenol ether, a polyethylene glycol fatty acid ester, a sorbitan fatty acid ester, a fatty acid alkanol amide, a block copolymer of ethylene oxide and propylene oxide, and the mixtures thereof.
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) | 1985-09-20 | 1986-03-22 | 1986-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-20 | 1990-03-22 | 1990-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-20 | 1994-03-22 | 1994-09-21 | $7700.00 | Window Closed / Lapsed |