GB977494A - Improvements in carbon black - Google Patents

Improvements in carbon black

Info

Publication number
GB977494A
GB977494A GB8122/63A GB812263A GB977494A GB 977494 A GB977494 A GB 977494A GB 8122/63 A GB8122/63 A GB 8122/63A GB 812263 A GB812263 A GB 812263A GB 977494 A GB977494 A GB 977494A
Authority
GB
United Kingdom
Prior art keywords
per
surface area
carbon black
black
ozone
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
GB8122/63A
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.)
Columbian Carbon Co
Original Assignee
Columbian Carbon Co
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
Priority claimed from US256807A external-priority patent/US3245820A/en
Application filed by Columbian Carbon Co filed Critical Columbian Carbon Co
Publication of GB977494A publication Critical patent/GB977494A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44—Carbon
    • C09C1/48—Carbon black
    • C09C1/56—Treatment of carbon black ; Purification
    • C09C1/565—Treatment of carbon black ; Purification comprising an oxidative treatment with oxygen, ozone or oxygenated compounds, e.g. when such treatment occurs in a region of the furnace next to the carbon black generating reaction zone
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44—Carbon
    • C09C1/48—Carbon black
    • C09C1/56—Treatment of carbon black ; Purification
    • 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
    • C01P2006/19—Oil-absorption capacity, e.g. DBP values

Abstract

A carbon black ink pigment may be prepared by contacting an ozone-containing gas stream with an oil furnace black which embodies the following characteristics within the indicated ranges: .E.M. surface area.120-150 m2 per gm .B.E.T. surface area.100-170 m2 per gm .Oil absorption.7-14 gal. per 100 lbs., the ratio of B.E.T. surface area to E.M. surface area of the black not exceeding 1.3 : 1, the furnace black so treated being in unpelleted form both before and throughout the entire ozonation, and the ratio of carbon black to ozone, by weight, not exceeding 25 : 1 and preferably above 10 : 1. The black used may have up to 10% by weight moisture content. The ozonation, which may be carried out at temperatures less than 300 DEG F., particularly 70-90 DEG F., is advantageously effected with a dry-air ozone mixture containing not more than 6% by weight of ozone and preferably 0.4-3%. Two alternative means of ozonation are disclosed and exemplified. In the first, continuous ozonation is effected by passing the black at a uniform rate through a slowly-rotating drum and passing an ozone-containing air stream through the drum in contact with the carbon black. For example, using a drum 10 feet in diameter, 30 feet in length which rotates at 1-2 r.p.m. the contact time between the gas stream and carbon black was one hour. Alternatively, the carbon black may be suspended in the gas stream prior to its introduction into the reaction vessel, e.g. two cyclone-type separators connected in series in which case the contact time is usually less than 1 minute. The product from either process, i.e. a carbon black characterized by a low structure, an E.M. surface area of from 120-150 m2 per gm., a B.E.T. surface area of from 100-170 m2 per gm., the ratio of the B.E.T. to E.M. surface area not exceeding 1.3 : 1, an oil absorption of 7-14 gallons per 100 lbs., and a volatile content in an amount of at least 2 x 10-4 grams of volatile matter per m2 of carbon black surface of which total at least 30% is carbon dioxide, is claimed per se. Specifications 715,713 and 763,159 are referred to.
GB8122/63A 1962-03-19 1963-02-28 Improvements in carbon black Expired GB977494A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18083562A 1962-03-19 1962-03-19
US256807A US3245820A (en) 1963-02-07 1963-02-07 Preparation of long-flow carbon black

Publications (1)

Publication Number Publication Date
GB977494A true GB977494A (en) 1964-12-09

Family

ID=61190513

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8122/63A Expired GB977494A (en) 1962-03-19 1963-02-28 Improvements in carbon black

Country Status (4)

Country Link
DE (1) DE1467417A1 (en)
FR (1) FR1355872A (en)
GB (1) GB977494A (en)
NL (1) NL290323A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2889326B2 (en) * 1989-09-14 1999-05-10 昭和キャボット株式会社 Carbon black and rubber composition
JP3778956B2 (en) * 1994-03-28 2006-05-24 三菱化学株式会社 Carbon black
DE19511240B4 (en) * 1994-03-28 2005-07-21 Mitsubishi Chemical Corp. Soot and method of production

Also Published As

Publication number Publication date
FR1355872A (en) 1964-03-20
DE1467417A1 (en) 1969-03-06
NL290323A (en) 1965-06-10

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