ZA200707277B - Method of controlling acetic acid process - Google Patents
Method of controlling acetic acid process Download PDFInfo
- Publication number
- ZA200707277B ZA200707277B ZA200707277A ZA200707277A ZA200707277B ZA 200707277 B ZA200707277 B ZA 200707277B ZA 200707277 A ZA200707277 A ZA 200707277A ZA 200707277 A ZA200707277 A ZA 200707277A ZA 200707277 B ZA200707277 B ZA 200707277B
- Authority
- ZA
- South Africa
- Prior art keywords
- preparation
- composition
- surface according
- filler
- bentonite
- Prior art date
Links
- 238000000034 method Methods 0.000 title description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 title 3
- 239000000203 mixture Substances 0.000 claims description 22
- 239000000945 filler Substances 0.000 claims description 16
- 238000002360 preparation method Methods 0.000 claims description 13
- 239000006185 dispersion Substances 0.000 claims description 11
- 239000000440 bentonite Substances 0.000 claims description 7
- 229910000278 bentonite Inorganic materials 0.000 claims description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical group O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 7
- 239000000049 pigment Substances 0.000 claims description 7
- 229920001577 copolymer Polymers 0.000 claims description 5
- 239000010456 wollastonite Substances 0.000 claims description 4
- 229910052882 wollastonite Inorganic materials 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920000742 Cotton Polymers 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 239000000378 calcium silicate Substances 0.000 claims description 2
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 2
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 229920003043 Cellulose fiber Polymers 0.000 claims 1
- 239000010425 asbestos Substances 0.000 description 6
- 229910052895 riebeckite Inorganic materials 0.000 description 6
- 239000002245 particle Substances 0.000 description 4
- 239000002562 thickening agent Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 102000009123 Fibrin Human genes 0.000 description 1
- 108010073385 Fibrin Proteins 0.000 description 1
- BWGVNKXGVNDBDI-UHFFFAOYSA-N Fibrin monomer Chemical compound CNC(=O)CNC(=O)CN BWGVNKXGVNDBDI-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229950003499 fibrin Drugs 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Description
- FIELD OF THE INVENTION TooToo
This invention relates to compositions for the preparation of surfaces, particularly tennis court surfaces.
The conventional all-weather tennis court surface is prepared with a copolymer dispersion which includes asbestos as a filler.
However, legislation has been passed which outlaws the use of asbestos and it has been necessary to search for a substitute for asbestos as a filler in such compositions.
The few companies that manufacture dispersions for tennis courts do not supply the fillers or other material that are required to be blended into the compositions.
It is also clear that manufacturers have little motivation to spend money on research into suitable fillers since the demand is relatively small and are unaware of the proportions which are used and the techniques employed in their application on tennis courts because the tennis court contractors have kept their use of fillers as secrets.
After substantial research, a suitable substitute for asbestos has been found and it is an object of the present invention to provide compositions for the preparation of tennis court and other surfaces which include a perfectly safe and efficient filler.
According to the invention a composition for the preparation of a surface includes a dispersion of a suitable synthetic copolymer with a suitable calcium silicate product as a filler.
HE
* In a preferred form of the invention the filler is bentonite, which acts as a thickener to maintain all of the material in the dispersion in suspension; and the fine particles of "bentonite disperse between the larger particles of sand, thereby filling the voids and increasing the compressive strength of the dispersion when it has dried.
Bentonite is a perfectly safe product as evidenced by its use in cosmetics, household cleaners, paints and coatings.
Wollastonite may also be used, preferably with bentonite. It also acts as a filler and thickener. Since its particles are disc-shaped, smaller than sand particles and larger than bentonite particles, they therefore provide great compressive strength to the mixture.
Certain fibres are added to the dispersions such as a powdered natural cellulose (cotton) fibre which acts as a filler, thickener and binding and reinforcing agent. They serve to bond and reduce the aggregation of the fine aggregates while reducing plastic shrinkage by lending greater hydration to the mixture. This ensures that the rate at which the mixture bleeds and evaporates is slowed down. Monofilament polypropylene fibres may also be used, which also reduce plastic shrinkage and also improve resistance to frost, to impact and abrasion and also improves water and chemical penetration resistance.
The dispersions of the invention with the filler and other additives provides a safe, durable and environmentally friendly coating for tennis courts and other surfaces having the following advantages over prior art dispersions:
Contains no asbestos
Can be used on concrete and bitumen based floors
Resistance to frost, water and chemical penetration, impact. Abrasion, and cracking.
The surface has been shown to last longer with less maintenance costs, than the asbestos compositions.
A typical composition is provided in the following table
SRY
ITEM VOLUME PERCENTAGE RANGE
SBR based synthetic | 6kg 5-25 co-polymer
Wollastonite 3.75kg .05 —- 10 of solids volume
Arbocell (Trade Mark) 600g .05 of liquid volume
Fibrin (Trade Mark) 0.006 — 1.5
The colour of choice (based on availability of pigments), is derived from a mixing chrome oxide pigment with the above mixture at the rate of 7,5 kg of pigment : 109 kg of slurry. The depth of the colour required can be manipulated by adjusting the quantity of pigment.
The surface can also be coloured by the used of the following mixture: 180 litres of water 7,5 litres of SBR based synthetic co-polymer (Duralatex by ABE or similar) 1,8 kg of Arbocell BC 200
Pigment as required.
Claims (10)
1. A composition for the preparation of a surface characterized in that it includes a dispersion of a suitable synthetic copolymer with a suitable calcium silicate product as a filler.
2. A composition for the preparation of a surface according to claim 1 characterized in that the filler is bentonite.
3. A composition for the preparation of a surface according to claims 1 or 2 characterized in that the filler is Wollastonite.
4. A composition for the preparation of a surface according to any of claims 1 to 3 characterized in that a combination of bentonite and Wollastonite is used as the filler.
5. A composition for the preparation of a surface according to any of the above claims characterized in that fibres are added to the dispersions.
6. A composition for the preparation of a surface according to claim 5 characterized in that the fiber comprises natural cellulose (cotton) fiber.
. N py A composition for the preparation of a surface according to claims 5 or 6 characterized in that the natural cellulose fiber is powdered.
8. A composition for the preparation of a surface according to claim 5 characterized in that that the fiber comprises monofilament polypropylene.
9. A composition for the preparation of a surface according to any of the above claims characterized in that the dispersion of the invention with the filler and other additives are used for tennis courts.
10. A composition for the preparation of a surface according to any of the above claims characterized in that chrome oxide pigments are added at a rate of 7,5 kg of pigment to 109kg of slurry. Dated this 14 day of October 2009 MORRISON Afi INC” APPLICANTS’ PATENT ATTORNEYS
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US65099705P | 2005-02-08 | 2005-02-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA200707277B true ZA200707277B (en) | 2009-01-28 |
Family
ID=39023474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA200707277A ZA200707277B (en) | 2005-02-08 | 2006-02-07 | Method of controlling acetic acid process |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN101116039B (en) |
UA (1) | UA93499C2 (en) |
ZA (1) | ZA200707277B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8378141B2 (en) * | 2010-08-16 | 2013-02-19 | Celanese International Corporation | Process and system for supplying vapor from drying column to light ends column |
-
2006
- 2006-02-07 ZA ZA200707277A patent/ZA200707277B/en unknown
- 2006-02-07 UA UAA200710039A patent/UA93499C2/en unknown
- 2006-02-07 CN CN200680004413.0A patent/CN101116039B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN101116039B (en) | 2012-08-15 |
UA93499C2 (en) | 2011-02-25 |
CN101116039A (en) | 2008-01-30 |
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