GB626695A - Improvements in or relating to powdered pigment compositions - Google Patents
Improvements in or relating to powdered pigment compositionsInfo
- Publication number
- GB626695A GB626695A GB34073/45A GB3407345A GB626695A GB 626695 A GB626695 A GB 626695A GB 34073/45 A GB34073/45 A GB 34073/45A GB 3407345 A GB3407345 A GB 3407345A GB 626695 A GB626695 A GB 626695A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resin
- pigment
- weight
- discrete particles
- particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/006—Preparation of organic pigments
Abstract
A resin-pigment composition comprises discrete particles of an intimate dispersion of a pigment in a resin which is soluble and non-softening at normal temperatures, the amount of resin being at least equal to the critical amount for said pigment. The " critical amount of resin " is that percentage weight of the resin calculated on the total weight of resin and pigment which, with a composition reduced to the form of discrete particles will show a satisfactory and full colour development on hand-stirring in less than ten minutes. Preferably the discrete particles are from 40 to 200 and advantageously 50 to 140 mesh per linear inch. An anti-bonding agent, i.e. a substance which prevents the resin-pigment particles sticking together, may be present preferably in from 5 to 10 per cent by weight of the discrete particles. The resin-pigment composition may be prepared by mixing the resin and pigment in the above amounts under conditions of shear and at an elevated temperature such that the resin can undergo plastic flow and continuing to mix until all the pigment particles have become intimately dispersed and coated by the resin. The mixing may be effected by milling the resin and pigment between a hot and a cold roller. The ratio of resin to pigment may vary from 9 to 1 down to 2 to 8 as the average particle size of the pigment increases from 0.1 to 0.5 microns. Specified pigments are Toluidine Red, Monastral Blue, Lampblack, Prussian Blue, Red Iron Oxide, Ferrite Yellow, Light Chrome Green and Chrome Yellow. Specified resins are a pentaerythritol ester of a rosin-maleic anhydride addition product, a polymerized hydrocarbon product (" Velsicol," Registered Trade Mark), ester gum and Congo ester. The resin pigment composition may be incorporated in coating compositions.ALSO:Pigments coated with resins (see Group III) are incorporated in enamels such as an alkyd varnish containing 21 per cent by weight of phthalic anhydride and 29 per cent by weight of a vegetable oil composed of equal parts of linseed oil and alkali refined soya bean oil, or in oleo-resinous varnishes such as a pentaerythritol ester of rosin in dehydrated castor oil.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US626695XA | 1945-01-17 | 1945-01-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB626695A true GB626695A (en) | 1949-07-20 |
Family
ID=22044049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34073/45A Expired GB626695A (en) | 1945-01-17 | 1945-12-17 | Improvements in or relating to powdered pigment compositions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB626695A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4129638A (en) | 1974-09-20 | 1978-12-12 | The Procter & Gamble Company | Compositions of matter for coloring toothpaste and method of preparing same |
| WO2002068543A1 (en) * | 2001-02-22 | 2002-09-06 | Sun Chemical Corporation | Method of making pigment dispersion containing a carrier such as castor oil or vegetable wax |
-
1945
- 1945-12-17 GB GB34073/45A patent/GB626695A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4129638A (en) | 1974-09-20 | 1978-12-12 | The Procter & Gamble Company | Compositions of matter for coloring toothpaste and method of preparing same |
| WO2002068543A1 (en) * | 2001-02-22 | 2002-09-06 | Sun Chemical Corporation | Method of making pigment dispersion containing a carrier such as castor oil or vegetable wax |
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