DE3819034A1 - Process for the production of a writing chalk having improved writing action - Google Patents

Process for the production of a writing chalk having improved writing action

Info

Publication number
DE3819034A1
DE3819034A1 DE19883819034 DE3819034A DE3819034A1 DE 3819034 A1 DE3819034 A1 DE 3819034A1 DE 19883819034 DE19883819034 DE 19883819034 DE 3819034 A DE3819034 A DE 3819034A DE 3819034 A1 DE3819034 A1 DE 3819034A1
Authority
DE
Germany
Prior art keywords
chalk
writing
improved
production
titanium dioxide
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.)
Withdrawn
Application number
DE19883819034
Other languages
German (de)
Inventor
Theodor Prof Dr Eckert
Juergen Boeckmann
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19883819034 priority Critical patent/DE3819034A1/en
Publication of DE3819034A1 publication Critical patent/DE3819034A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K19/00—Non-propelling pencils; Styles; Crayons; Chalks
    • B43K19/003—Chalks
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D13/00—Pencil-leads; Crayon compositions; Chalk compositions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

A chalk for writing is described which has an improved writing action by virtue of the incorporation into the chalk of titanium dioxide (TiO2).

Description

Normale Schreibkreide (Schultafelkreide) besteht aus Calciumsuifat (Gips) oder Caiciumcarbonat, dem geringe Mengen eines Bindemittels zugesetzt werden. Auch Zusätze von Kaolin und Ton wurden beschrieben. Im Falle von farbiger Schreibkreide werden Farbstoffe oder Pigmente eingearbeitet. Die mit normaler Schreibkreide oder mit farbiger Schreibkreide erzielte Schriftwirkung ist jedoch dann unzu­ reichend, wenn auf einer feuchten Unterlage geschrieben wird.Normal chalk (school chalk) consists of calcium suifate (Gypsum) or calcium carbonate, the small amounts of a binder be added. Additions of kaolin and clay were also made described. In the case of colored chalk, dyes are used or pigments incorporated. The one with normal chalk or with colored writing chalk, however, is then unacceptable sufficient when writing on a damp surface.

Überraschenderweise wurde gefunden, daß die Schriftwirkung der Schreibkreide wesentlich verbessert wird, wenn in die nach herkömmlichen Verfahren hergestellte Schreibkreide Titandioxid (TiO2) eingearbeitet wird.Surprisingly, it has been found that the writing effect of the chalk is significantly improved if titanium dioxide (TiO 2 ) is incorporated into the chalk produced by conventional methods.

Insbesondere ist es durch Zuschläge von Titandioxid (TiO2) zur Schreibkreide möglich, auch auf feuchten Unterlagen eine deutliche Schriftwirkung zu erzielen. Weiterhin wird durch einen Zuschlag von Titandioxid (TiO2) zu farbiger Schreibkreide deren Schrift- und Farbwirkung verbessert. Dies gilt sowohl für feuchte als auch für trockene Unterlagen.In particular, additions of titanium dioxide (TiO 2 ) to the chalk make it possible to achieve a clear writing effect even on damp substrates. Furthermore, the addition of titanium dioxide (TiO 2 ) to colored chalk improves their writing and color effects. This applies to both damp and dry substrates.

Die Menge des Zuschlages an Titandioxid (TiO2) ist weitgehend va­ riabel. Die verbesserte Schriftwirkung wird auch durch einen Schreibstift erzielt, der aus reinem Titandioxid besteht, dem ein Bindemittel zugesetzt wird.The amount of the addition of titanium dioxide (TiO 2 ) is largely variable. The improved writing effect is also achieved by a pen made of pure titanium dioxide, to which a binder is added.

Claims (3)

1. Verfahren zur Herstellung einer Schreibkreide mit verbesserter Schriftwirkung, dadurch gekennzeichnet, daß in die Schreibkreide Zuschläge von Titandioxid (TiO2) eingearbeitet werden.1. A method for producing a chalk with improved writing effect, characterized in that additions of titanium dioxide (TiO 2 ) are incorporated into the chalk. 2. Verfahren zur Herstellung einer farbigen Schreibkreide mit verbesserter Schriftwirkung, dadurch gekennzeichnet, daß in die farbige Schreibkreide Zuschläge von Titandioxid (TiO2) eingearbeitet werden.2. A process for producing a colored chalk with improved writing effect, characterized in that additions of titanium dioxide (TiO 2 ) are incorporated into the colored chalk. 3. Verfahren zur Herstellung eines Schreibstiftes mit verbesserter Schriftwirkung, dadurch gekennzeichnet, das der Schreibstift aus reinem Titandioxid (TiO2) und einem Bindemittel besteht.3. A method for producing a pen with improved writing effect, characterized in that the pen consists of pure titanium dioxide (TiO 2 ) and a binder.
DE19883819034 1988-06-03 1988-06-03 Process for the production of a writing chalk having improved writing action Withdrawn DE3819034A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883819034 DE3819034A1 (en) 1988-06-03 1988-06-03 Process for the production of a writing chalk having improved writing action

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883819034 DE3819034A1 (en) 1988-06-03 1988-06-03 Process for the production of a writing chalk having improved writing action

Publications (1)

Publication Number Publication Date
DE3819034A1 true DE3819034A1 (en) 1989-12-14

Family

ID=6355848

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883819034 Withdrawn DE3819034A1 (en) 1988-06-03 1988-06-03 Process for the production of a writing chalk having improved writing action

Country Status (1)

Country Link
DE (1) DE3819034A1 (en)

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Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee