ES280788A1 - A procedure for the preparation of a developer for the positive diazotypic process (Machine-translation by Google Translate, not legally binding) - Google Patents

A procedure for the preparation of a developer for the positive diazotypic process (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES280788A1
ES280788A1 ES0280788A ES280788A ES280788A1 ES 280788 A1 ES280788 A1 ES 280788A1 ES 0280788 A ES0280788 A ES 0280788A ES 280788 A ES280788 A ES 280788A ES 280788 A1 ES280788 A1 ES 280788A1
Authority
ES
Spain
Prior art keywords
developer
diazotypic
translation
positive
preparation
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
ES0280788A
Other languages
Spanish (es)
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.)
Grinten Chem L V D
Chemische Fabriek L Van der Grinten NV
Original Assignee
Grinten Chem L V D
Chemische Fabriek L Van der Grinten NV
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 Grinten Chem L V D, Chemische Fabriek L Van der Grinten NV filed Critical Grinten Chem L V D
Publication of ES280788A1 publication Critical patent/ES280788A1/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A process for the preparation of a weakly acidic developer in a liquid or solid state for the positive diazotypic process, which developer, in the ready-to-use form, is an aqueous acid reaction solution containing phloroglucin as a single or major coupling component. as a buffer salt and with which a one component diazotypic material can be developed according to the so-called semi-wet (semi-dry) method in which a thin layer of the developer liquid is spread over the surface of the diazotypic material exposed to the image, characterized in that the buffer salt used consists of dipotassium maleate and/or dilithic maleate or substances which, when dissolved in water, are capable of reacting with each other with formation of these salts, and a relatively small amount of an acid is added. or of a water-soluble acid reaction salt, as a result of which the developer in the ready-to-use form has a p H between 6.5 and 7. (Machine-translation by Google Translate, not legally binding)
ES0280788A 1961-09-15 1962-09-14 A procedure for the preparation of a developer for the positive diazotypic process (Machine-translation by Google Translate, not legally binding) Expired ES280788A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE484675 1961-09-15

Publications (1)

Publication Number Publication Date
ES280788A1 true ES280788A1 (en) 1962-12-16

Family

ID=38569658

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0280788A Expired ES280788A1 (en) 1961-09-15 1962-09-14 A procedure for the preparation of a developer for the positive diazotypic process (Machine-translation by Google Translate, not legally binding)

Country Status (1)

Country Link
ES (1) ES280788A1 (en)

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