Patent US4270955A successfully refreshed from Google Patents.
US4270955A
Expired / Lapsed
US
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Treatment for reducing the dusting of treated zinc oxide
Assignee: Manufacturers Hanover Trust Co
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Filing: 1980-04-29
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Granted: 1981-06-02
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Expires: 2000-04-29
Abstract
Abstract A treatment for reducing the dusting of a particulate zinc oxide which has been treated with an organic compound, such as propionic acid, for incorporation in rubbers and plastics, comprising treating said particulate zinc oxide which a composition selected from the group comprising trialkyl phosphates, tricresyl phosphate and mixtures thereof in an amount sufficient to reduce the dusting index thereof.
Inventors
- 👤 Donald M. Eshelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:37
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/04; C09C1/043; C01; C01P; C01P2006/00; C01P2006/12
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
58 words
A treatment for reducing the dusting of a particulate zinc oxide which has been treated with propionic acid for incorporation in rubbers and plastics, comprising treating said particulate zinc oxide with a phosphate selected from the group consisting of trialkyl phosphates, tributoxyethyl phosphate, tricresyl phosphate and mixtures thereof in an amount sufficient to reduce the dusting index thereof.
Claim 2
Dependent Claim
58 words
A treatment for reducing the dusting of a particulate zinc oxide which has been treated with propionic acid for incorporation in rubbers and plastics, comprising treating said particulate zinc oxide with a phosphate selected from the group consisting of trialkyl phosphates, tributoxyethyl phosphate, tricresyl phosphate and mixtures thereof in an amount sufficient to reduce the dusting index thereof.
Claim 3
Dependent Claim
26 words
A treatment according to claim 1 wherein the phosphate is selected from the group consisting of triethyl phosphate, tributyl phosphate and tributoxyethyl phosphate and mixtures thereof.
Claim 4
Dependent Claim
34 words
A treatment according to claim 1 wherein the phosphate is present in an amount from about 0.05 to about 1.0 weight percent based upon the total weight of the propionic acid treated zinc oxide.
Claim 5
Dependent Claim
36 words
A treatment according to claim 1 wherein the phosphate is present in an amount from about 0.20 weight percent to about 0.75 weight percent based upon the total weight of the propionic acid treated zinc oxide.
Claim 6
Dependent Claim
13 words
A treatment according to claim 1 wherein the trialkyl phosphate is triethyl phosphate.
Claim 7
Dependent Claim
13 words
A treatment according to claim 1 wherein the trialkyl phosphate is tributyl phosphate.
Claim 8
Dependent Claim
12 words
A treatment according to claim 1 wherein the phosphate is tributoxyethyl phosphate.
Claim 9
Dependent Claim
32 words
A treatment according to claim 1 wherein the phosphate is a mixture of one or more compounds selected from the group consisting of triethyl phosphate, tributyl phosphate, tributoxyethyl phosphate and tricresyl phosphate.
Claim 10
Dependent Claim
66 words
A treatment for reducing the dusting of a particulate zinc oxide which has been treated with propionic acid, for incorporation in rubbers and plastics, comprising treating said particulate zinc oxide with a mixture of a light processing oil and a phosphate selected from the group consisting of trialkyl phosphates, tributoxyethyl phosphate, tricresyl phosphate and mixtures thereof in an amount sufficient to reduce the dusting index thereof.
Claim 11
Dependent Claim
66 words
A treatment for reducing the dusting of a particulate zinc oxide which has been treated with propionic acid, for incorporation in rubbers and plastics, comprising treating said particulate zinc oxide with a mixture of a light processing oil and a phosphate selected from the group consisting of trialkyl phosphates, tributoxyethyl phosphate, tricresyl phosphate and mixtures thereof in an amount sufficient to reduce the dusting index thereof.
Claim 12
Dependent Claim
27 words
A treatment according to claim 9 wherein the phosphate is selected from the group consisting of triethyl phosphate, tributyl phosphate, tributoxyethyl phosphate, tricresyl phosphate and mixtures thereof.
Claim 13
Dependent Claim
34 words
A treatment according to claim 9 wherein the phosphate is present in an amount from about 0.05 to about 1.0 weight percent based upon the total weight of the propionic acid treated zinc oxide.
Claim 14
Dependent Claim
36 words
A treatment according to claim 9 wherein the phosphate is present in an amount from about 0.05 weight percent to about 0.25 weight percent based upon the total weight of the propionic acid treated zinc oxide.
Claim 15
Dependent Claim
13 words
A treatment according to claim 9 wherein the trialkyl phosphate is triethyl phosphate.
Claim 16
Dependent Claim
13 words
A treatment according to claim 9 wherein the trialkyl phosphate is tributyl phosphate.
Claim 17
Dependent Claim
12 words
A treatment according to claim 9 wherein the phosphate is tributoxethyl phosphate.
Claim 18
Dependent Claim
32 words
A treatment according to claim 9 wherein the phosphate is a mixture of one or more compounds selected from the group consisting of triethyl phosphate, tributyl phosphate, tributoxyethyl phosphate and tricresyl phosphate.
Claim 19
Dependent Claim
49 words
A zinc oxide product consisting essentially of a particulate zinc oxide which has been treated with propionic acid and subsequently treated with a phosphate selected from the group consisting of trialkyl phosphates, tributoxyethyl phosphate, tricresyl phosphate and mixtures thereof in an amount sufficient to reduce the dusting index thereof.
Claim 20
Dependent Claim
49 words
A zinc oxide product consisting essentially of a particulate zinc oxide which has been treated with propionic acid and subsequently treated with a phosphate selected from the group consisting of trialkyl phosphates, tributoxyethyl phosphate, tricresyl phosphate and mixtures thereof in an amount sufficient to reduce the dusting index thereof.
Claim 21
Dependent Claim
36 words
A product according to claim 17 wherein the phosphate is present in an amount from about 0.05 weight percent to about 1.0 weight percent based upon the total weight of the propionic acid treated zinc oxide.
Claim 22
Dependent Claim
36 words
A product according to claim 17 wherein the phosphate is present in an amount from about 0.20 weight percent to about 0.75 weight percent based upon the total weight of the propionic acid treated zinc oxide.
Claim 23
Dependent Claim
13 words
A product according to claim 17 wherein the trialkyl phosphate is triethyl phosphate.
Claim 24
Dependent Claim
13 words
A product according to claim 17 wherein the trialkyl phosphate is tributyl phosphate.
Claim 25
Dependent Claim
12 words
A product according to claim 17 wherein the phosphate is tributoxyethyl phosphate.
Claim 26
Dependent Claim
29 words
A product according to claim 17 wherein the phosphate is a mixture of phosphates selected from the group consisting of triethyl phosphate, tributyl phosphate, tributoxyethyl phosphate and tricresyl phosphate.
Claim 27
Dependent Claim
57 words
A zinc oxide product consisting essentially of a particulate zinc oxide which has been treated with propionic acid and subsequently treated with a mixture of a light processing oil and a phosphate selected from the group consisting of trialkyl phosphates, tributoxyethyl phosphate, tricresyl phosphate and mixtures thereof in an amount sufficient to reduce the dusting index thereof.
Claim 28
Dependent Claim
57 words
A zinc oxide product consisting essentially of a particulate zinc oxide which has been treated with propionic acid and subsequently treated with a mixture of a light processing oil and a phosphate selected from the group consisting of trialkyl phosphates, tributoxyethyl phosphate, tricresyl phosphate and mixtures thereof in an amount sufficient to reduce the dusting index thereof.
Claim 29
Dependent Claim
16 words
A zinc oxide product according to claim 24 wherein the light processing oil is Circo oil.
Claim 30
Dependent Claim
29 words
A zinc oxide product according to claim 24 wherein the phosphate is selected from the group consisting of triethyl phosphate, tributyl phosphate, tributoxyethyl phosphate, tricresyl phosphate and mixtures thereof.
Claim 31
Dependent Claim
36 words
A zinc oxide product according to claim 24 wherein the phosphate is present in an amount from about 0.05 to about 1.0 weight percent based upon the total weight of the propionic acid treated zinc oxide.
Claim 32
Dependent Claim
38 words
A zinc oxide product according to claim 24 wherein the phosphate is present in an amount from about 0.05 weight percent to about 0.25 weight percent based upon the total weight of the propionic acid treated zinc oxide.
Claim 33
Dependent Claim
15 words
A zinc oxide product according to claim 24 wherein the trialkyl phosphate is triethyl phosphate.
Claim 34
Dependent Claim
15 words
A zinc oxide product according to claim 24 wherein the trialkyl phosphate is tributyl phosphate.
Claim 35
Dependent Claim
14 words
A zinc oxide product according to claim 24 wherein the phosphate is tributoxyethyl phosphate.
Claim 36
Dependent Claim
35 words
A zinc oxide product according to claim 24 wherein the phosphate composition is a mixture of one or more compounds selected from the group consisting of triethyl phosphate, tributyl phosphate, tributoxyethyl phosphate and tricresyl phosphate.
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) | 1984-06-01 | 1984-12-01 | 1985-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-01 | 1988-12-01 | 1989-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-01 | 1992-12-01 | 1993-06-02 | $7700.00 | Window Closed / Lapsed |