DE1572022B2 - Process for generating diazotype images - Google Patents

Description

C ₁ · '·' ■■ in which R is a halogen atom or optionally one

i ₅ by carboxy, hydroxy, carbonyl or amino groups or their derivatives or halogen atoms sub- ^; ζΡ == C; _; , substituted alkyl, aryl, alkenyl, aralkyl or

| ^ "..,., J,. . 'Cycloalkyl radical or a substituted amino or cyano

H ^n; R 'residue or a carboxyl residue or its derivatives (such as

ao amide, aldehyde) or a Sulforest or its

in which R is a halogen atom or a given derivative (such as amide) is used,
if by carboxy, hydroxy, carbonyl or this way it is achieved that with stable, storage

Ammo groups or their derivatives or halogen-resistant couplers develop rapidly atoms substituted alkyl, aryl, alkenyl, ar ammonia takes place under increased pressure and alkyl or cycloalkyl radical or a substituted amino 35 copies of high ultraviolet opacity are obtained, or cyano radical or a carboxyl radical or its according to a particularly advantageous embodiment

Derivatives (such as amide, aldehyde) or a Sulforest device of the invention is a diazotype material or its derivatives (such as amide) is used, which is a diazonium compound and the turns. Contains coupler in the photosensitive layer.

2. The method according to claim 1, characterized in that the ammonia is particularly advantageous in that a diazotype material is used at a pressure of up to 70.5 kp / cm ² ,
applies, which a diazonium compound and a The method is generally applicable to single or couplers in the photosensitive layer .enthalt. Two-component diazotype materials applicable,

3. Process according to claim 1 or 2, but it is characterized for two-component diazotype strategy that the ammonia is particularly valuable in 35 rials. Such materials ^{apply a pressure of up to 70.5 kp / cm 2.} Are characterized by a high Shelf life from

and do not lead to premature coupling.
Particularly suitable substituents R for the coupling

ler of the formula given above are aryl, alkyl,

40 alkenyl, aralkyl or cycloalkyl radicals that are unsubstituted or by a carboxy, hydroxy, carpie The present invention relates to a method of bonyl or amino group and derivatives of each

can be substituted for the production of diazotype copies under development of these groups, and subst. development with anhydrous ammonia for an amino residue.

Pressure greater than 3.5 kp / cm ² and a temperature 45 To special compounds of the above general

between 4 and 100 ⁰ C according to Patent 1 266 641. formula in the present invention brauchin the patent 1 266 641 a method for unloading cash illustrate compounds include, for example

Development of diazotype copies described in the case of those given in Table I below.

which the development with anhydrous ammonia. ■ "τ h 11 τ

at a pressure. greater than "3.5 kp / cm ² and a 50 iaoil

Temperature between 4 and 100 ° C is carried out. o-cyclohexylphenol,

There are many coupler compounds of the phenol type o-allylphenol,

known for the diazotype, including o-Hy- o- (l-methylbutyl) -phenol,

droxyphenylpropionic acid (J. K o s a r, »Light Sen- o-Hydroxyphenäthylalkohol,

sensitive Systems ", J. Wiley" -and Sons, New York, Lon- 55 benzyl-o-hydroxybenzyl ether,

don, Sidney, 1965, p. 221). The disadvantage of the o-methoxymethylphenol,

known couplers for the diazotype that this ent- o-phenylphenol,

are neither unstable and therefore lack of storage o-hydroxyacetanilide,

have resistance or a tendency towards pre-o-hydroxycinnamic acid,

show early coupling when they are in two- 60 o-propylphenol,

component diazotype materials are used o-hydroxybenzyl alcohol,

or to images of poor opacity when using o-isopropylphenol,

in the usual diazotype process. o-isobutylphenol,

The object of the invention is to create a Ver o-Hydroxyhydrozimtsäureamid,

driving to the production of diazotype copies of high 6g methyl-o-hydroxyphenyl acetate,

Opacity. o-hydroxyhydrocinnamic acid,

This object is achieved by a method in which o-hydroxyphenylacetanilide,

which the development with anhydrous ammonia o-hydroxyphenylacetamide,

o-Hydroxyphenylacetic acid-2-phenylhydrazide
o-tert-butylphenol.

According to a preferred procedure, a solution is prepared in an organic solvent, those of a suitable photosensitive diazonium salt and an o-monosubstituted phenol of those given above Formula contains. A coating of this solution is applied to a suitable substrate and dried. The support can be cellulose acetate, a paper web or another suitable one Be underlay material.

Any of the commonly known photosensitive diazonium compounds can be used in the preparation of the diazotype materials can be used.

The resulting diazotype material is imagewise exposed and then developed by exposing it to anhydrous ammonia under pressure. The anhydrous ammonia is applied at a pressure greater than 3.5 kp / cm ² . For example, a pressure in the range from 3.5 to 70.5 kgf / cm ^{2 is} satisfactory. With diazotype materials of the type described, development is virtually complete in about 1 second or less after exposure to anhydrous ammonia under pressure.

The following examples serve to further illustrate the invention.

example 1

IO is exposed and developed as in Example 1. A fully developed, high-opacity copy is produced.

Example 3

A diazotype material is prepared as in Example 2, but o-hydroxyacetanilide is used as the coupler used.

Example 4

It is a diazotype material as in Example 2, but using o- (methylbutyl) phenol manufactured as a coupler.

Example 5

Materials prepared according to Examples 3 and 4 are made with HiKe of a conventional developing device developed for aqueous ammonia. Other samples of the material prepared in Examples 3 and 4 are developed by contact with anhydrous ammonia at a pressure of 5.62 atmospheres for 1 second. The results of the development with aqueous ammonia and with anhydrous ammonia under pressure are compared in Table II for comparison.

40

A solvent mixture of 30 parts by volume of methyl ethyl ketone and 40 parts by volume of methyl cellosolve is produced. The following ingredients are then given in the solvent mixture in the specified Quantities dissolved:

2 percent by weight citric acid, ^3S

1 percent by weight sulfosalicylic acid,

1.5 percent by weight p-dimethylaminobenzene

fluoborate,
2.0 weight percent o-cyclohexylphenol.

A thin coating of the solution obtained is applied to a transparent cellulose acetate base and left to dry. The material is then exposed through a negative for about 3 to 5 seconds and by contact with anhydrous ammonia at a pressure of 5.62 atmospheres for 1.0 seconds developed. This creates a fully developed, high-opacity copy.

B e i s ρ i e 1 2

A solvent mixture of 33 parts by volume of methyl ethyl ketone and 44 parts by volume of methyl cellosolve is produced. The following ingredients are then given in the solvent mixture in the specified Quantities dissolved:

1.12 percent by weight vinyl acetate resin,

0.75 percent by weight copolymer
Acrylic and methacrylic acid esters,

1.0 percent by weight sulfosalicylic acid,

2.0 percent by weight citric acid,

1.5 percent by weight p-dimethylaminobenzene

fiuoborate,

2.06 percent by weight o-cyclohexylphenol.

A thin coating of the solution obtained is applied to a transparent cellulose acetate base and dried, and the material obtained

Table II

Development process water Aqueous ammonia total density Diazotype material free
Ammo stay
Time
(lake) 0.42 niak number of 120 0.19 1.0 se
Customers, By
corridors 100 5.62 atm
density 30th 0.58 40 0.30 Example 3 Example 4

As can be seen from the data in Table II, diazotype materials produced according to the examples 3 and 4 are made, copies of satisfactory density and opacity after development for only 1 second with anhydrous ammonia under pressure. The same materials result in numerous passes through a conventional developing device using aqueous Ammonia does not have copies of comparable density. The total development time in the device below Use of aqueous ammonia is at least a hundred times greater than that used to develop such Materials with anhydrous ammonia under pressure required time. This shows the extraordinary Suitability of the diazotype materials used for ammonia development under pressure and their Failure to practical use in common diazotype development processes.

Similar results are obtained with diazotype materials, the usual light-sensitive diazonium compounds and contain any of the described o-monosubstituted phenolic couplers, according to Development obtained with ammonia under pressure.

Claims (1)

1 2. is done under pressure. It is characterized in that the coupler used is at least one compound of the general formula 1. Process for producing diazotype copies with development with anhydrous Am-5 HH
moniak at a pressure greater than 3.5 kp / cm ² I · ■ · ... I>.
and a temperature between 4 and 100 ⁰ C after. .C- "C. Patent 266 641, characterized thereby- jj C C OH net, that as coupler at least one encryption \, / bond of the general formula io C = C