GB883264A - Aluminium oxide filler for the brightening of paper - Google Patents

Aluminium oxide filler for the brightening of paper

Info

Publication number
GB883264A
GB883264A GB1188660A GB1188660A GB883264A GB 883264 A GB883264 A GB 883264A GB 1188660 A GB1188660 A GB 1188660A GB 1188660 A GB1188660 A GB 1188660A GB 883264 A GB883264 A GB 883264A
Authority
GB
United Kingdom
Prior art keywords
aluminium
octadecahydrate
aluminium oxide
aluminium sulphate
paper
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
Application number
GB1188660A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Publication of GB883264A publication Critical patent/GB883264A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/30—Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
    • C01F7/32—Thermal decomposition of sulfates including complex sulfates, e.g. alums
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/675—Oxides, hydroxides or carbonates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/11—Powder tap density
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • C01P2006/82—Compositional purity water content

Abstract

An aluminium oxide filler for paper is prepared by incomplete thermal decomposition of hydrated aluminium sulphate to produce an alumina containing more than 5% SO3. The initial aluminium sulphate, preferably the octadecahydrate, may be prepared by treating Bayer aluminium hydroxide or calcined kaolin with sulphuric acid and separating the silica before crystallising the octadecahydrate. Alternatively the silica from the kaolin may be left as an additional filler. According to an example, crystalline aluminium sulphate octadecahydrate is injected in suspension with air into the upper end of a conical heating chamber, at the lower end of which combustion gases enter tangentially. Effluent gases leave tangentically from the top of the chamber and deposit the entrained aluminium oxide formed in a cyclone. The outlet temperature may be from 800-1100 DEG C. Reference is made to the employment of such alumina as a component in a bleached sulphite cellulose which also contains aluminium sulphate. Specification 673,336 is referred to.
GB1188660A 1959-04-06 1960-04-04 Aluminium oxide filler for the brightening of paper Expired GB883264A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF28126A DE1120859B (en) 1959-04-06 1959-04-06 Filler for lightening paper

Publications (1)

Publication Number Publication Date
GB883264A true GB883264A (en) 1961-11-29

Family

ID=7092751

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1188660A Expired GB883264A (en) 1959-04-06 1960-04-04 Aluminium oxide filler for the brightening of paper

Country Status (2)

Country Link
DE (1) DE1120859B (en)
GB (1) GB883264A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140087040A1 (en) * 2012-09-26 2014-03-27 Multiple Energy Technologies Llc Bioceramic compositions
USD766597S1 (en) 2014-06-27 2016-09-20 Multiple Energies Technologies Llc Apparel with bioceramic surface ornamentation
US9833509B2 (en) 2014-05-05 2017-12-05 Multiple Energy Technologies Llc Bioceramic compositions and biomodulatory uses thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE693386C (en) * 1937-11-13 1940-07-08 Goldschmidt Ag Th Paper filler
DE883432C (en) * 1942-08-01 1953-07-16 Hermann Kretzschmar Dr Process for the extraction of alumina from aluminum sulphate crystals
DE859005C (en) * 1943-12-16 1952-12-11 Kali Chemie Ag Process for the production of alumina
DE1019419B (en) * 1952-11-25 1957-11-14 Cabot Godfrey L Inc Production of finely divided oxides of metals and metalloids

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140087040A1 (en) * 2012-09-26 2014-03-27 Multiple Energy Technologies Llc Bioceramic compositions
US10252945B2 (en) * 2012-09-26 2019-04-09 Multiple Energy Technologies Llc Bioceramic compositions
US9833509B2 (en) 2014-05-05 2017-12-05 Multiple Energy Technologies Llc Bioceramic compositions and biomodulatory uses thereof
US9962441B2 (en) 2014-05-05 2018-05-08 Multiple Energy Technologies Llc Bioceramic compositions and biomodulatory uses thereof
USD766597S1 (en) 2014-06-27 2016-09-20 Multiple Energies Technologies Llc Apparel with bioceramic surface ornamentation

Also Published As

Publication number Publication date
DE1120859B (en) 1961-12-28

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