GB341443A - Process for manufacturing dispersions - Google Patents
Process for manufacturing dispersionsInfo
- Publication number
- GB341443A GB341443A GB30664/29A GB3066429A GB341443A GB 341443 A GB341443 A GB 341443A GB 30664/29 A GB30664/29 A GB 30664/29A GB 3066429 A GB3066429 A GB 3066429A GB 341443 A GB341443 A GB 341443A
- Authority
- GB
- United Kingdom
- Prior art keywords
- added
- acid
- dispersion
- electrolytes
- per cent
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/51—Methods thereof
- B01F23/511—Methods thereof characterised by the composition of the liquids or solids
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Colloid Chemistry (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
Aqueous dispersions of asphalt, tar, pitch and the like, prepared with the aid of finely divided solids such as bentonite or colloidal oxides hydroxides or silicates, are treated with an electrolyte, in quantity sufficient normally to cause flocculation of the dispersion or with two or more electrolytes added in admixture or in succession, flocculation being prevented by adding the electrolytes gradually and with continued beating of the dispersion. The beating may be effected in the apparatus described in Specification 334,100, [Class 81 (i), Disinfecting &c.], and may be continued after the electrolytes have been added. Electrolytes may also be added to the dispersing agent. Protective colloids such as gums, starch dextrine, tapioca flour or tannin may be added before, during, or after the treatment. Suitable electrolytes are sulphuric, hydrochloric, phosphoric, chromic, oxalic, or benzoic acid; acid salts such as potassium dichromate, aluminium sulphate, or acid sodium or calcium phosphate; and magnesium or calcium oxide or hydroxide. In examples: (1) Mexican asphalt is dispersed with an aqueous suspension of equal parts of bentonite and New Jersey pottery clay, to which 10 per cent of potassium dichromate has been added. The dispersion, containing 20 to 50 times as much asphalt as dispersing agent is then beaten during the gradual addition of 0,3 per cent phosphoric, 0,4 per cent chromic, or 0,1 per cent hydrochloric acid, or 1 per cent potassium dichromate, relative to the weight of the dispersion. The addition is preferably made in small increments, each being added only when the beating action has dissipated the flocculation induced by the previous one. The dispersion gives a rust inhibiting coating to metal surfaces. (2) Coal tar is dispersed in water with a bentonite suspension made alkaline with sodium carbonate, or ammonium or trisodium phosphate. An acid salt, an acid, or a mixture of a basic and an acid substance, in similar quantities as are used in (1), is then added while beating.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB30664/29A GB341443A (en) | 1929-10-09 | 1929-10-09 | Process for manufacturing dispersions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB30664/29A GB341443A (en) | 1929-10-09 | 1929-10-09 | Process for manufacturing dispersions |
Publications (1)
Publication Number | Publication Date |
---|---|
GB341443A true GB341443A (en) | 1931-01-09 |
Family
ID=10311181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30664/29A Expired GB341443A (en) | 1929-10-09 | 1929-10-09 | Process for manufacturing dispersions |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB341443A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2481323A (en) * | 1946-04-26 | 1949-09-06 | Stancal Asphalt & Bitumuls Com | Bituminous emulsions and the like |
US2483835A (en) * | 1946-04-26 | 1949-10-04 | Stancal Asphalt & Bitumuls Com | Quick-breaking emulsions having increased adhesion to mineral aggregate |
US2509574A (en) * | 1946-07-31 | 1950-05-30 | Stancal Asphalt & Bitumuls Com | Bituminous emulsions |
US2620312A (en) * | 1950-09-25 | 1952-12-02 | American Bitumuls & Asphalt Co | Process of making a bituminous emulsion |
GB2322569A (en) * | 1997-02-26 | 1998-09-02 | Shell Int Research | Process for preparing a bitumen emulsion |
-
1929
- 1929-10-09 GB GB30664/29A patent/GB341443A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2481323A (en) * | 1946-04-26 | 1949-09-06 | Stancal Asphalt & Bitumuls Com | Bituminous emulsions and the like |
US2483835A (en) * | 1946-04-26 | 1949-10-04 | Stancal Asphalt & Bitumuls Com | Quick-breaking emulsions having increased adhesion to mineral aggregate |
US2509574A (en) * | 1946-07-31 | 1950-05-30 | Stancal Asphalt & Bitumuls Com | Bituminous emulsions |
US2620312A (en) * | 1950-09-25 | 1952-12-02 | American Bitumuls & Asphalt Co | Process of making a bituminous emulsion |
GB2322569A (en) * | 1997-02-26 | 1998-09-02 | Shell Int Research | Process for preparing a bitumen emulsion |
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