GB1101627A - Defoamant composition and process - Google Patents
Defoamant composition and processInfo
- Publication number
- GB1101627A GB1101627A GB449366A GB449366A GB1101627A GB 1101627 A GB1101627 A GB 1101627A GB 449366 A GB449366 A GB 449366A GB 449366 A GB449366 A GB 449366A GB 1101627 A GB1101627 A GB 1101627A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wax
- weight
- composition
- water
- insoluble
- 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
- 239000000203 mixture Substances 0.000 title abstract 7
- 239000004615 ingredient Substances 0.000 abstract 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 4
- 239000007788 liquid Substances 0.000 abstract 4
- -1 stearyl alcohols Chemical class 0.000 abstract 4
- 239000001993 wax Substances 0.000 abstract 4
- 239000012736 aqueous medium Substances 0.000 abstract 3
- 239000003995 emulsifying agent Substances 0.000 abstract 3
- 239000006260 foam Substances 0.000 abstract 3
- 239000004698 Polyethylene Substances 0.000 abstract 2
- 239000002518 antifoaming agent Substances 0.000 abstract 2
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 abstract 2
- 239000008387 emulsifying waxe Substances 0.000 abstract 2
- 239000012170 montan wax Substances 0.000 abstract 2
- 229920000573 polyethylene Polymers 0.000 abstract 2
- 229920001296 polysiloxane Polymers 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- 239000007787 solid Substances 0.000 abstract 2
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 abstract 1
- 239000004205 dimethyl polysiloxane Substances 0.000 abstract 1
- 239000004088 foaming agent Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 abstract 1
- 229920001223 polyethylene glycol Polymers 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
A solid defoamant composition comprises (1) a water-insoluble emulsifying agent, (2) a liquid organopolysiloxane defoaming agent and (3) a water-insoluble wax having a M.P. above 80 DEG C. Ingredient (1) is preferably a self-emulsifying wax having a drop point above 45 DEG C., e.g. reaction products of stearyl alcohols and polyethylene glycols. Ingredient (2) is a liquid siloxane or a siloxane paste, e.g. liquid dimethylsiloxane containing 1 to 10% by wt. of SiO2. Ingredient (3) can be a polyethylene wax having a M.W. above 3500, or a derivative of Montan wax. Preferably the composition consists of (by wt.), 15 to 60% of (1), 15 to 35% of (2), and 25 to 50% of (3). The composition is preferably made by heating, with stirring, the 3 ingredients to at least the M.P. of the ingredients, and, if desired, allowing the resulting mixture to solidify in moulds. Examples of the above compositions are given. Uses: for preventing or reducing the generation of foam in aqueous media at above 40 DEG C. (see Division B1).ALSO:The generation of foam in an aqueous medium maintained at a temperature above 40 DEG C is prevented or reduced by contacting the foam or the aqueous medium with a solid defoamant composition comprising (1) a water-insoluble emulsifying agent, (2) a liquid organopolysiloxane defoaming agent and (3) a water-insoluble wax having a M.P. above 80 DEG C (see Division C3). The emulsifying agent (1) may be a self-emulsifying wax. The preferred de-foaming agent (2) is a combination of a dimethylpolysiloxane with from 1% to 10% by weight of finely-divided silica. The wax (3) may be a polyethylene or montan wax. Preferred proportions are:-(1) 15% to 60% by weight; (2), 15% to 35% by weight; (3) 25% to 50% by weight.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB449366A GB1101627A (en) | 1966-02-01 | 1966-02-01 | Defoamant composition and process |
| NL6701484A NL6701484A (en) | 1966-02-01 | 1967-01-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB449366A GB1101627A (en) | 1966-02-01 | 1966-02-01 | Defoamant composition and process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1101627A true GB1101627A (en) | 1968-01-31 |
Family
ID=9778221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB449366A Expired GB1101627A (en) | 1966-02-01 | 1966-02-01 | Defoamant composition and process |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB1101627A (en) |
| NL (1) | NL6701484A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0306007A3 (en) * | 1987-08-31 | 1990-07-25 | Dow Corning Kabushiki Kaisha | Solid silicone defoaming agent |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0008830A1 (en) | 1978-09-09 | 1980-03-19 | THE PROCTER & GAMBLE COMPANY | Suds-suppressing compositions and detergents containing them |
-
1966
- 1966-02-01 GB GB449366A patent/GB1101627A/en not_active Expired
-
1967
- 1967-01-31 NL NL6701484A patent/NL6701484A/xx unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0306007A3 (en) * | 1987-08-31 | 1990-07-25 | Dow Corning Kabushiki Kaisha | Solid silicone defoaming agent |
Also Published As
| Publication number | Publication date |
|---|---|
| NL6701484A (en) | 1967-08-02 |
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