US3920836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sanitizing plastic material
Assignee: ASKEW ANTHONY B
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Filing: 1973-12-21
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Granted: 1975-11-18
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Expires: 1993-12-21
Abstract
Abstract An effective amount of nonionic trialkyl amine and optionally one of a Group II-A or Group II-B metal salt of a monocarboxylic acid having a carbon chain length of 1 to 4, cadmium chloride, or ethylenediaminetetraacetic acid when dispersed in a thermoplastic resin is an effective and long lasting fungicidal and bactericidal agent which is effective against both Gram positive and Gram negative organisms including pseudomonas aeruginosa.
Inventors
- 👤 Robert H Mcintosh
- 👤 Ezekiel H Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:44
CPC Classifications
A; A01; A01N; A01N33/00; A01N33/02; A01N33/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
63 words
A SANITIZING AGENT CAPABLE OF DESTROYING OR INHIBITING THE GROWTH OF BOTH GRAM NEGATIVE AND GRAM POSITIVE BACTERIA, FUNGI AND PSEUDOMANAS AERUGINOSA, SAID AGENT CONSISTING ESSENTIALLY OF A MIXTURE OF A NONIONIC TRIALKYLAMINE AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A GROUP IIA OR GROUP II-B METAL SALT OF A MONOCARBOXYLIC ACID HAVING A CARBON CHAIN LENGTH OF 1 TO 4.
Claim 2
Dependent Claim
63 words
A SANITIZING AGENT CAPABLE OF DESTROYING OR INHIBITING THE GROWTH OF BOTH GRAM NEGATIVE AND GRAM POSITIVE BACTERIA, FUNGI AND PSEUDOMANAS AERUGINOSA, SAID AGENT CONSISTING ESSENTIALLY OF A MIXTURE OF A NONIONIC TRIALKYLAMINE AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A GROUP IIA OR GROUP II-B METAL SALT OF A MONOCARBOXYLIC ACID HAVING A CARBON CHAIN LENGTH OF 1 TO 4.
Claim 3
Dependent Claim
34 words
A sanitizing agent according to claim 1 wherein said agent consists essentially of a mixture of dimethyllaurylamine and barium acetate in a part by weight ratio within the mixture of 1: 2 to 2:1.
Claim 4
Dependent Claim
81 words
A sanitizing agent according to claim 1, wherein the trialkyl amine consists essentially of two alkyl groups having a carbon chain length of 1 to 4 atoms and one alkyl group having a carbon chaIn length of 8 to 18 atoms, and the Group II-A or Group II-B metal salt of a monocarboxylic acid consists essentially of a compound selected from the group consisting of barium, cadmium and strontium salts of acetic acid, propionic acid, and butyric acid or mixtures thereof.
Claim 5
Dependent Claim
22 words
A sanitizing agent as disclosed in claim 1, wherein the sanitizing agent consists essentially of a mixture of dimethyllaurylamine and barium acetate.
Claim 6
Dependent Claim
47 words
A sanitizing agent as disclosed in claim 1, wherein the agent consists essentially of a mixture of dimethyllaurylamine and barium acetate in a part by weight ratio for acetate to amine of 70 to 50 parts by weight acetate to 30 to 50 parts by weight amine.
Claim 7
Dependent Claim
37 words
A sanitizing agent as disclosed in claim 1, wherein the agent consists essentially of a mixture of dimethyllaurylamine and barium acetate in a part by weight ratio for acetate to amine of 40 parts to 60 parts.
Claim 8
Dependent Claim
92 words
A thermoplastic self-sanitizing additive consisting essentially of a mixture of barium acetate and dimethyl lauryl amine in a part by weight ratio of 1:2 to 2:1 for amine to acetate, said additive being effective, notwithstanding high manufacturing temperatures encountered of 150*C to 200*C which tend to degrade or discolor known sanitizing additives, to impart self-sanitizing characteristics to the thermo-plastic material and to be efficacious, after repeated washings, to inhibit the growth of a wide spectrum of common bacteria and fungi for a period of time following manufacture of articles from the material.
Claim 9
Dependent Claim
92 words
A thermoplastic self-sanitizing additive consisting essentially of a mixture of barium acetate and dimethyl lauryl amine in a part by weight ratio of 1:2 to 2:1 for amine to acetate, said additive being effective, notwithstanding high manufacturing temperatures encountered of 150*C to 200*C which tend to degrade or discolor known sanitizing additives, to impart self-sanitizing characteristics to the thermo-plastic material and to be efficacious, after repeated washings, to inhibit the growth of a wide spectrum of common bacteria and fungi for a period of time following manufacture of articles from the material.
References Cited (Backward Citations)
US3705235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |