GB833057A - Improvements in and relating to alumina abrasive materials - Google Patents
Improvements in and relating to alumina abrasive materialsInfo
- Publication number
- GB833057A GB833057A GB19683/57A GB1968357A GB833057A GB 833057 A GB833057 A GB 833057A GB 19683/57 A GB19683/57 A GB 19683/57A GB 1968357 A GB1968357 A GB 1968357A GB 833057 A GB833057 A GB 833057A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alumina
- gibbsite
- heating
- sodium
- abrasive
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/26—Aluminium; Compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1409—Abrasive particles per se
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Organic Chemistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Birds (AREA)
- Epidemiology (AREA)
- Cosmetics (AREA)
Abstract
An alumina abrasive material, suitable for use in dentifrice compositions, is prepared by heating gibbsite to 900-1050 DEG C., and maintaining the alumina thus formed within this temperature range for at least an hour. The alumina may be held at this temperature until there is present not more than 20% gamma-alumina, not more than 10% alpha alumina, and between 20% and 90%, preferably 20%-55%, kappa-type alumina, in the product. All these phases are defined with respect to their X-ray diffraction patterns. The product may have a median particle size of 6-10m with 80% of the particles in the range 3-20m and substantially no particles below 3m . The gibbsite may be previously dehydrated by heating it to 500-800 DEG C., the rate of heating to this temperature preferably being below 210 DEG C. per minute. In the preferred manner of preparing the abrasive, the gibbsite is maintained at 1000 DEG C. for not more than 10 hours.ALSO:A dentifrice comprises an alumina abrasive prepared by heating gibbsite to 900 DEG to 1050 DEG C. and maintaining the temperature for at least an hour (see Group III). Preferably at least 80% of the particles should have diameters ranging from 3m to 20 m . Toothpastes contain a thickener such as natural gums, gum karaya, gum arabic, gum tragacanth, seaweed derivatives such as Irish moss and alginates and water-soluble salts of cellulose ethers, such as sodium carboxymethyl cellulose and sodium carboxymethyl hydroxymethyl cellulose. Colloidal magnesium aluminium silicate will improve the texture. A sudsing agent, such as water-soluble alkyl- and alkyl ether sulphates and sulphonates having 8 to 18 carbon atoms in the alkyl group, water-soluble salts of sulphonated monoglycerides of fatty acids having from 10 to 18 carbon atoms, salts of fatty acid amides of taurines, such as sodium-N-methyl-N-polymitoyl tauride, and salts of fatty acid esters of isethionic acid may be added. A humeclant, such as glycerine, sorbitol or other polyhydric alcohol, and flavouring such as oil of winter-green, oil of peppermint, saccharine dextrose and levulose, may be added. Tooth powders consist of the abrasive, 0 to 5% of sudsing agent, and flavouring. Other suitable additives to the dentifrice composition include sarcosinates, fluorine-containing compounds, quaternary ammonia compounds, chlorophyll, sodium dehydroacetates, sodium lauryl sulphate, tyrothrycin, penicillin and hexachlorophene.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US593253A US3003919A (en) | 1956-06-22 | 1956-06-22 | Alumina abrasive materials |
Publications (1)
Publication Number | Publication Date |
---|---|
GB833057A true GB833057A (en) | 1960-04-21 |
Family
ID=24374017
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB19683/57A Expired GB833057A (en) | 1956-06-22 | 1957-06-21 | Improvements in and relating to alumina abrasive materials |
Country Status (2)
Country | Link |
---|---|
US (1) | US3003919A (en) |
GB (1) | GB833057A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3217856A (en) * | 1963-03-28 | 1965-11-16 | Ibm | Paper feeding mechanisms for typewriters |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1248038A (en) * | 1959-10-28 | 1960-12-09 | Electrochimie Electrometallurg | Anhydrous aluminas manufacturing process |
US3227521A (en) * | 1961-01-17 | 1966-01-04 | Reynolds Metals Co | Process for producing substantially kappa-phase alumina |
US3141747A (en) * | 1961-08-24 | 1964-07-21 | Norton Co | Alumina abrasive |
US3216983A (en) * | 1961-10-23 | 1965-11-09 | Ind Biology Lab Inc | Reaction products of polyvinylpyrrolidone compounds and polyisocyanates |
US3443895A (en) * | 1966-08-30 | 1969-05-13 | Aluminum Co Of America | Process for producing kappa alumina |
US3443894A (en) * | 1966-08-30 | 1969-05-13 | Aluminum Co Of America | Process for producing kappa alumina |
US4168301A (en) * | 1967-03-03 | 1979-09-18 | Lever Brothers Company | Dentifrice based on high particle size alpha-alumina trihydrate |
US3574823A (en) * | 1968-08-05 | 1971-04-13 | Colgate Palmolive Co | Dentifrice containing visible agglomerated particles of polishing agents |
US3943240A (en) * | 1973-08-20 | 1976-03-09 | Colgate-Palmolive Company | Toothpaste |
GB1442396A (en) * | 1973-04-11 | 1976-07-14 | Unilever Ltd | Dentifrice |
US4089943A (en) * | 1974-02-08 | 1978-05-16 | Colgate-Palmolive Company | Toothpaste formulations |
US4174387A (en) * | 1975-01-28 | 1979-11-13 | Colgate-Palmolive Company | Reduction of abrasiveness in dentifrices |
US4170634A (en) * | 1975-01-28 | 1979-10-09 | Colgate Palmolive Company | Modified abrasive system for dentifrices |
US4060599A (en) * | 1975-03-25 | 1977-11-29 | Colgate-Palmolive Company | Dentifrices |
US4024239A (en) * | 1975-07-03 | 1977-05-17 | Lever Brothers Company | Toothpaste composition |
US4102978A (en) * | 1975-11-10 | 1978-07-25 | Norton Company | Process for producing alumina catalyst carriers |
PH15413A (en) * | 1978-11-01 | 1983-01-07 | Unilever Nv | Improvements in and relating to dentifrices and their preparation |
JPS6039327B2 (en) * | 1979-08-31 | 1985-09-05 | ライオン株式会社 | toothpaste composition |
US4663153A (en) * | 1983-03-14 | 1987-05-05 | Church & Dwight Co., Inc. | Sodium bicarbonate-containing tooth powder |
US4547362A (en) * | 1983-03-14 | 1985-10-15 | Church & Dwight Co., Inc. | Sodium-bicarbonate-containing tooth powder |
DE3425152A1 (en) * | 1984-07-07 | 1986-01-16 | Henkel KGaA, 4000 Düsseldorf | TOOTHPASTE |
IT1184114B (en) * | 1985-01-18 | 1987-10-22 | Montedison Spa | ALFA ALUMINATES IN THE FORM OF SPHERICAL PARTICLES, NOT AGGREGATED, WITH RESTRIBUTION GRANULOMETRIC RESTRICTED AND OF LESS THAN 2 MICRONS, AND PROCESS FOR ITS PREPARATION |
US4568363A (en) * | 1985-03-08 | 1986-02-04 | Dresser Industries, Inc. | Method for making sintered aluminous abrasive particles |
US4623536A (en) * | 1985-06-13 | 1986-11-18 | Church & Dwight Co., Inc. | Sodium bicarbonate containing toothpaste |
GB8803328D0 (en) * | 1988-02-12 | 1988-03-09 | Alcan Int Ltd | Alumina hydrates |
GB8803329D0 (en) * | 1988-02-12 | 1988-03-09 | Alcan Int Ltd | Alumina hydrates |
US5603920A (en) * | 1994-09-26 | 1997-02-18 | The Proctor & Gamble Company | Dentifrice compositions |
US5658553A (en) * | 1995-05-02 | 1997-08-19 | The Procter & Gamble Company | Dentifrice compositions |
US5651958A (en) * | 1995-05-02 | 1997-07-29 | The Procter & Gamble Company | Dentifrice compositions |
US5589160A (en) * | 1995-05-02 | 1996-12-31 | The Procter & Gamble Company | Dentifrice compositions |
US5716601A (en) * | 1996-03-22 | 1998-02-10 | The Procter & Gamble Company | Dentifrice compositions |
DE19740453A1 (en) * | 1997-09-15 | 1999-03-18 | Henkel Kgaa | Dentifrice with improved cleaning and polishing effects |
JP4089509B2 (en) * | 2003-05-22 | 2008-05-28 | 日立化成工業株式会社 | Friction material composition and friction material using friction material composition |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1926744A (en) * | 1929-11-04 | 1933-09-12 | Detroit Edison Co | Process for extracting alumina |
US2000857A (en) * | 1930-12-01 | 1935-05-07 | Swann Res Inc | Aluminum oxide abrasive and method of making the same |
US2010910A (en) * | 1932-05-04 | 1935-08-13 | Malcolm W Atkins | Dental cleaning and polishing compound |
US2550207A (en) * | 1949-01-25 | 1951-04-24 | Sterling Drug Inc | Dentifrice compositions |
US2750258A (en) * | 1954-02-17 | 1956-06-12 | Dorr Oliver Inc | Process for calcining finely-divided alumina hydrate |
US2809170A (en) * | 1957-06-10 | 1957-10-08 | Houdry Process Corp | Extruding attrition resistant alumina particles |
-
1956
- 1956-06-22 US US593253A patent/US3003919A/en not_active Expired - Lifetime
-
1957
- 1957-06-21 GB GB19683/57A patent/GB833057A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3217856A (en) * | 1963-03-28 | 1965-11-16 | Ibm | Paper feeding mechanisms for typewriters |
Also Published As
Publication number | Publication date |
---|---|
US3003919A (en) | 1961-10-10 |
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