US3937678A
Expired / Lapsed
US
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Process for modifying rheological and suspension properties of nonaqueous suspension
Assignee: Kusumoto Chemicals Ltd
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Filing: 1974-07-05
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Granted: 1976-02-10
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Expires: 1994-07-05
Abstract
Abstract A process for improving rheological properties and suspension properties of a nonaqueous fluid system containing finely divided solid particles, characterized in that an amide wax (I) having a melting point of about 100° to about 160°C. obtained from reaction of hydrogenated castor oil fatty acid or an organic acid mixture containing at least 30 molar per cent of hydrogenated castor oil fatty acid with amines and an emulsifiable polyethylene wax (II) having an acid number of about 2 to 50, a softening point of about 95° to about 120°C., a density of about 0.92 to about 0.98 and a penetration of about 1 to about 20 are added to the nonaqueous fluid system, and the nonaqueous fluid system obtained by aforesaid process.
Inventors
- 👤 Zenpachi Yasuda
- 👤 Hiroshi Koizumi
- 👤 Masao Hasunuma
- 👤 Satoshi Oda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:16
CPC Classifications
C; C09; C09D; C09D167/00; C09D167/08; B; B01; B01J; B01J13/00; B01J13/0073; B01J13/0082; C09D5/00; C09D5/34; C09D7/00; C09D7/40; C09D7/45; C09K; C09K23/00; C09K23/017
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
119 words
A process for improving the rheological and suspension properties of a nonaqueous fluid system which contains finely divided solid particles characterized in that: (I) an amide wax having a melting point of about 100° to about 160°C. obtained from reaction of hydrogenated castor oil fatty acid or an organic acid mixture containing at least 30 molar percent of hydrogenated castor oil fatty acid with at least one primary or secondary amine; and (II) an emulsifiable polyethylene wax having an acid number of about 2 to 50, a softening point of about 95 to about 120°C., a density of about 0.92 to about 0.98 and a penetration of about 1 to about 20; are added to the nonaqueous fluid system.
Claim 2
Dependent Claim
119 words
A process for improving the rheological and suspension properties of a nonaqueous fluid system which contains finely divided solid particles characterized in that: (I) an amide wax having a melting point of about 100° to about 160°C. obtained from reaction of hydrogenated castor oil fatty acid or an organic acid mixture containing at least 30 molar percent of hydrogenated castor oil fatty acid with at least one primary or secondary amine; and (II) an emulsifiable polyethylene wax having an acid number of about 2 to 50, a softening point of about 95 to about 120°C., a density of about 0.92 to about 0.98 and a penetration of about 1 to about 20; are added to the nonaqueous fluid system.
Claim 3
Dependent Claim
56 words
The process of claim 1 further characterized in that the total added amount of the amide wax (I) and the emulsifiable polyethylene wax (II) is 0.1 to 5% based on the weight of the nonaqueous fluid system and the weight ratio of the amide wax (I) to the emulsifiable polyethylene wax (II) is 10:90 to 85:15.
Claim 4
Dependent Claim
115 words
A nonaqueous fluid system containing finely divided solid particles having improved rheological properties and suspension properties characterized in that: (I) an amide wax having a melting point of about 100° to about 160°C. obtained from reaction of hydrogenated castor oil fatty acid or an organic acid mixture containing at least 30 molar per cent of hydrogenated castor oil fatty acid with at least one primary or secondary amine and (II) an emulsifiable polyethylene wax having an acid number of about 2 to about 50, a softening point of about 95° to about 120°C., a density of about 0.92 to about 0.98 and a penetration of about 1 to about 20; are present in the system.
Claim 5
Dependent Claim
115 words
A nonaqueous fluid system containing finely divided solid particles having improved rheological properties and suspension properties characterized in that: (I) an amide wax having a melting point of about 100° to about 160°C. obtained from reaction of hydrogenated castor oil fatty acid or an organic acid mixture containing at least 30 molar per cent of hydrogenated castor oil fatty acid with at least one primary or secondary amine and (II) an emulsifiable polyethylene wax having an acid number of about 2 to about 50, a softening point of about 95° to about 120°C., a density of about 0.92 to about 0.98 and a penetration of about 1 to about 20; are present in the system.
Claim 6
Dependent Claim
53 words
The system of claim 3 in which the total amount present of the amide wax (I) and the emulsifiable polyethylene wax (II) is 0.1 to 5% based on the weight of the system and the weight ratio of the amide wax (I) to the emulsifiable polyethylene wax (II) is from 10:90 to 85:15.
Claim 7
Dependent Claim
20 words
The process of claim 1, in which the emulsifiable polyethylene wax has a molecular weight of from 700 to 6,000.
Claim 8
Dependent Claim
15 words
The process of claim 5, in which the molecular weight is from 1,000 to 3,500.
Claim 9
Dependent Claim
20 words
The system of claim 3, in which the emulsifiable polyethylene wax has a molecular weight of from 700 to 6,000.
Claim 10
Dependent Claim
15 words
The system of claim 7, in which the molecular weight is from 1,000 to 3,500.
Claim 11
Dependent Claim
34 words
The process of claim 1 in which the amines are selected from at least one of the group consisting of: monoethanolamine; diethanolamine; aminoethyl ethanolamine; ethylenediame; propylenediamine; hexamethylenediamine; octamethylenediamine; dodecamethylenediamine; diethylenetriamine; triethylenetetramine; xylylenediamine; and benzylamine.
Claim 12
Dependent Claim
34 words
The system of claim 3 in which the amines are selected from at least one of the group consisting of: monoethanolamine; diethanolamine; aminoethyl ethanolamine; ethylenediamine; propylenediamine; hexamethylenediamine; octamethylenediamine; dodecamethylenediamine; diethylenetriamine; triethylenetetramine; xylylenediamine; and benzylamine.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |