US4294853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biocidal additive for cutting fluids
Assignee: Angus Chemical Co
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Filing: 1980-06-03
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Granted: 1981-10-13
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Expires: 2000-06-03
Abstract
Abstract The addition of a combination of CH3SO2CHI2 and certain chelating agents to cutting fluid prevents bacterial and fungal growth. Concentrated aqueous co-dispersions thereof are particularly useful.
Inventors
- 👤 John W. Williams
- 👤 Robert A. Smith
- 👤 Francis W. Arbir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:59
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/08; A; A01; A01N; A01N41/00; A01N41/02; A01N41/10; C10M2201/00; C10M2201/02; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2219/00; C10M2219/04; C10N; C10N2040/00; C10N2040/20; C10N2040/22
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
51 words
A mixture for use as a biocidal additive to industrial cutting fluids consisting essentially of 1 part by weight of 1,1-diiododimethyl sulfone and between 0.5 and 250 parts by weight of a chelating agent ##STR2## wherein R is hydrogen, an alkali metal cation or ammonium, and n is 0 or 1.
Claim 2
Dependent Claim
51 words
A mixture for use as a biocidal additive to industrial cutting fluids consisting essentially of 1 part by weight of 1,1-diiododimethyl sulfone and between 0.5 and 250 parts by weight of a chelating agent ##STR2## wherein R is hydrogen, an alkali metal cation or ammonium, and n is 0 or 1.
Claim 3
Dependent Claim
16 words
The mixture of claim 1 wherein said chelating agent is a salt of ethylenediamine tetraacetic acid.
Claim 4
Dependent Claim
12 words
The mixture of claim 2 wherein said salt is the diammonium salt.
Claim 5
Dependent Claim
12 words
The mixture of claim 2 wherein said salt is the tetrasodium salt.
Claim 6
Dependent Claim
12 words
The mixture of claim 2 wherein said salt is the disodium salt.
Claim 7
Dependent Claim
13 words
The mixture of claim 1 wherein said chelating agent is diethylenetriamine pentaacetic acid.
Claim 8
Dependent Claim
54 words
A stable, liquid composition for dissolution in a metal working fluid to protect such fluid against common industrial micro-organisms containing between 10 and 60% by weight of the combination of 1 part by weight of 1,1-diiododimethyl sulfone and 0.5-250 parts by weight of the chelating agent defined in claim 1, homogeneously dispersed in water.
Claim 9
Dependent Claim
16 words
The composition of claim 7 wherein said chelating agent is a salt of ethylenediamine tetraacetic acid.
Claim 10
Dependent Claim
12 words
The composition of claim 8 wherein said salt is the tetrasodium salt.
Claim 11
Dependent Claim
12 words
The composition of claim 8 wherein said salt is the diammonium salt.
Claim 12
Dependent Claim
12 words
The composition of claim 8 wherein said salt is the disodium salt.
Claim 13
Dependent Claim
13 words
The composition of claim 7 wherein said chelating agent is diethylenetriamine pentaacetic acid.
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) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |