DE507022C - Photographic developer - Google Patents

Description

GERMAN EMPIRE

ISSUED SEPTEMBER 11, 1930

REICH PATENT OFFICE

PATENT LETTERING

JVs 507 CLASS 57b GROUP

139068 IVb ^ b Date of publication of the patent grant: August 28, 1930

I. G. Farbenindustrie Akt-Ges. in Frankfurt a. M. *) Photographic developer

Addition to patent 454839 **)

Patented in the German Empire from August 20, 1929 The main patent started on November 20, 1926.

Through the main patent 454 839 and its additions 465902 and 467818 are photographic Protected developer containing the N-oxyethyl derivatives of 4- or 2-amino-1-oxybenzene or contain their core substitution products as active ingredients.

As was further found, also with the exception of those at each nitrogen are twofold oxyethylated bodies are the N-oxyethyl derivatives des 2 · 4-diamino-1-oxybenzene or N-monoacyl - 2 · 4-diamino-1-oxybenzene or the core substitution products of these compounds, provided they do not contain any nitro groups, good photographic developing agents, which in their properties and the photographic The mode of action is similar to that of the developers in the above-mentioned patents are.

example 1
The following are dissolved in ι 000 ecm of water:

6 · 5 g sulfate des 4-ox} ^r ethylamino-2-

acetamino-1 -oxybenzene,
45 g crist. Sodium sulfite,
25 g potassium carbonate.

The developer works similarly to the developer from 4-oxyethylamino-i-oxybenzene. Example 2 Dissolve in 200 ecm of water:

ι g chlorohydrate of 2-0xyäthylarnino-4-

acetamino- 1- oxybenzene s, 9 g crystall. Sodium sulfite,
5 g of potassium carbonate.

The developer works similarly, but with a steeper gradation than the developer Patent 465,902.

Example 3 Dissolve in 1000 ecm of water:

5 g sulfate of 4-oxyethylamino-2-aminoi-oxybenzene,

g Krist. Sodium sulfate, · ι g potassium bromide.

The developer acts similarly to that of 2 · 4-diamino-1-oxybenzene.

B e i s ρ i e 1 4

Dissolve in 200 ecm of water:

ι · 35 g sulfate of 2-oxyäthylamino-4-

acetamino-1-oxybenzene, iog crystall. Sodium sulfite,

ο 2 g potassium bromide.

*) The patent seeker indicated the following as the inventors:

Dr. Gustav Reddelien and Dr. Werner Müller in Leipzig. **) Former additional patents 465902 and 467818

Example £ In 200 ecm of water are dissolved:

ι · 5 g sulfate of 4-Dioxyäthylamino-2-

amino-1-oxybenzene, 10 g of crystall. Sodium sulfite, ο 4 g potassium bromide.

The developer works similarly to one made with 2 · 4-diamino-i-oxybenzene.

R c i s [) i e 1 6 «5 Dissolve in 200 ecm of water

ι g sulfate of 2-Dioxyäthylarnino-4-

amino-i-oxybenzene and 20 g of crystalline. Sodium sulfite.

The developer works in a similar way to the 4-amino-i-oxybenzene in the usual way Contains thinner.

Example 7
Dissolve in 200 ecm of water

ι ■ 5 g of sulfate of 2-Dioxyäthylamino-4c

amino-1 -oxybenzene,
9 g crist. Sodium sulfite,
ι g potassium bromide.

The developer comes in its mode of action containing a 2x4-diamino-i-oxybenzene Developer in the usual composition close.

Claims (1)

Claim: Photographic developer according to Patent 454839, characterized by Use of N-Oxyäthylderivaten des 2 · 4-diamino-i-oxybenzene or N-monoacyl-2 4-diamino-1 -oxybenzene or the core substitution products of these compounds, provided that they do not contain any nitro groups, with the exception of bodies that are doubly oxyethylated on each nitrogen.