US3905936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating particulates
Assignee: Commonwealth Scientific and Industrial Research Organisation
•
Filing: 1973-08-21
•
Granted: 1975-09-16
•
Expires: 1993-08-21
Abstract
Abstract Particulate inorganic or mineral materials, are surface modified by treatment with an organic aluminium derivative of the formula (RO)nAlR''3 n where R is an aliphatic or aromatic hydrocarbyl radical containing 1 - 12 carbon atoms; R'' is a substituted or unsubstituted, saturated or unsaturated carboxylate radical (R''''CO2-) or oxy radical (R''''''O-) or a mixture of such radicals, where R'''' and R'''''' are aliphatic, alicyclic, aromatic, aralkyl or heterocyclic radicals and R'''' contains 1 to 36 carbon atoms and R'''''' contains 6 to 25 carbon atoms with the proviso that R'''''' is not identical with R; and n has the value 1 or 2. The thus modified particles have a layer, chemically bonded to their surfaces, which comprises at least one oxyaluminium derivative of the carboxylate or oxy radical, in which at least one of the radicals R'''' and R'''''' is oriented to provide a hydrobic and oleophilic surface for the particle. The products show improved dispersability in organic liquid and plastics systems and confer improved mechanical properties on plastics containing the materials as fillers.
Inventors
- 👤 David Geoffrey Hawthorne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:05
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/40; C09C1/42; C07; C07F; C07F5/00; C07F5/06; C07F5/069; C08; C08K; C08K9/00; C08K9/04; C09C3/00; C09C3/08; C01; C01P; C01P2004/00; C01P2004/80; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
88 words
A METHOD FOR THE SURFACE MODIFICATION OF PARTICULATE INORGANIC OR MINERAL MATERIALS, WHICH COMPRISES TREATING THE MATERIAL WITH AN ORGANIC ALUMINUM DERIVATIVE OF THE FORMULA (RO)NAIR''3-N WHERE R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC OR AROMATIC HYDROCARBYL RADICALS CONTAINING 1-12 CARBON ATOMS, R'' IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF ACRYLATE AND METHACRYLATE RADICAL N HAS THE VALUE 1 OT 2 AND WHEREIN SAID ALUMINIUM DERIVATIVE IS USED AS AN AMOUNT OF FROM 0.1 TO 10 PERCENT BY WEIGHT OF THE MATEIAL.
Claim 2
Independent Claim
88 words
A METHOD FOR THE SURFACE MODIFICATION OF PARTICULATE INORGANIC OR MINERAL MATERIALS, WHICH COMPRISES TREATING THE MATERIAL WITH AN ORGANIC ALUMINUM DERIVATIVE OF THE FORMULA (RO)NAIR''3-N WHERE R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC OR AROMATIC HYDROCARBYL RADICALS CONTAINING 1-12 CARBON ATOMS, R'' IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF ACRYLATE AND METHACRYLATE RADICAL N HAS THE VALUE 1 OT 2 AND WHEREIN SAID ALUMINIUM DERIVATIVE IS USED AS AN AMOUNT OF FROM 0.1 TO 10 PERCENT BY WEIGHT OF THE MATEIAL.
Claim 3
Dependent Claim
30 words
A method as claimed in claim 1, wherein the material is treated with a mixture of aluminium derivatives as defined in claim 1, in which n 1 and n 2.
Claim 4
Dependent Claim
26 words
A method as claimed in claim 1, wherein the material is treated by dispersion of the material in a solution of the aluminium derivative of derivatives.
Claim 5
Dependent Claim
39 words
A method as claimed in claim 3, wherein the aluminium derivative is dissolved in a solvent selected from the class of aliphatic and aromatic hydrocarbon solvents, chlorinated hydrocarbon solvents, and mixtures of any two or more of such solvents.
Claim 6
Dependent Claim
20 words
A method as claimed in claim 3, wherein the material is dispersed in the solution under condItions of high shear.
Claim 7
Dependent Claim
20 words
A method as claimed in claim 1, wherein water is added to the material before or after the said treatment.
Claim 8
Dependent Claim
19 words
A method as claimed in claim 1, wherein the said amount is from 1 to 5 percent by weight.
Claim 9
Dependent Claim
16 words
A method as claimed in claim 1, wherein the particulate material is a filler or pigment.
Claim 10
Dependent Claim
67 words
A particulate inorganic or mineral material having a modified surface consisting of a layer, chemically bonded to the surface, comprising at least one oxyaluminium derivative of a radical selected from the group consisting of acrylate and methacrylate radicals, n has the value of 1 or 2; and wherein said aluminium derivative is used in an amount of from 0.1 to 10 percent by weight of the material.
Claim 11
Dependent Claim
67 words
A particulate inorganic or mineral material having a modified surface consisting of a layer, chemically bonded to the surface, comprising at least one oxyaluminium derivative of a radical selected from the group consisting of acrylate and methacrylate radicals, n has the value of 1 or 2; and wherein said aluminium derivative is used in an amount of from 0.1 to 10 percent by weight of the material.
Claim 12
Dependent Claim
76 words
A particulate inorganic or mineral material of claim 9 having a modified surface resulting from treatment in a substantially anhydrous organic solvent with an organic aluminium derivative of the formula (RO)nAlR''3-n where R is a radical selected from the group consisting of aliphatic and aromatic hydrocarbyl radicals containing 1 to 12 carbon atoms; R'' is a radical selected from the group consisting of acrylate and methacrylate radicals and n has the value of 1 or 2.
Claim 13
Dependent Claim
16 words
A composition comprising polyethylene or styrene-polyester and as a filler the material claimed in claim 10.
Claim 14
Dependent Claim
16 words
A composition comprising polyethylene or styrene-polyester and as a filler the material claimed in claim 9.
Claim 15
Dependent Claim
46 words
A method as claimed in claim 1, wherein said organic aluminium derivative is prepared by dissolving a suitable aluminium alkoxy compound in an anhydrous organic solvent and reacting said alkoxy compound with a suitable acid, phenol, alcohol or mixtures thereof to provide said organic aluminium derivative.
Claim 16
Dependent Claim
30 words
A method as claimed in claim 13, wherein the temperature of the reaction of the alkoxy compound with the acid, phenol, alcohol or mixtures thereof is between 10* and 30*C.
Claim 17
Dependent Claim
30 words
A process as claimed in claim 13, wherein said material is treated with the organnic aluminium derivative within about one half hour of the preparation of said organic aluminium derivative.
Claim 18
Dependent Claim
18 words
A method as claimed in claim 1, wherein said treating is effected in a substantially anhydrous organic solvent.
Claim 19
Dependent Claim
34 words
A method as claimed in claim 6, wherein the water is added in a sufficient amount to provide a range of from 0.25 to 0.5 percent water based on the weight of the material.
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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |