Abstract: The invention relates to 2,3,4-trihydroxy-3'-methyl-, -ethyl-, -propyl- or -isopropylbenzophenone which is completely esterified with (1,2-naphthoquinone 2-diazide)-4-sulfonic acid and/or (7-methoxy-1,2-naphthoquinone 2-diazide)-4-sulfonic acid, a radiation-sensitive mixture prepared therewith, and a radiation-sensitive recording material comprising a substrate and a radiation-sensitive layer which is composed of the mixture according to the invention.

Abstract: A radiation-sensitive composition is disclosed comprising a polymeric binder which is insoluble in water, but soluble or at least swellable in aqueous alkaline solution and a 2,3,4,4'-tetrahydroxybenzophenone which is partially esterified with (1,2-naphthoquinone 2-diazide)-4- and/or -5-sulfonic acid, which additionally contains either a dihydroxybenzophenone which is completely esterified with (1,2-naphthoquinone 2-diazide)-4- and/or -5-sulfonic acid or a trihydroxybenzophenone which is partially or completely esterified with (1,2-naphthoquinone 2-diazide)-4- and/or -5-sulfonic acid. The weight ratio of esterified 2,3,4,4'-tetrahydroxybenzophenone to esterified di- or trihydroxybenzophenone varies between about 4:6 and 7:3 and the esterified hydroxybenzophenones, as a whole, are present in a proportion of 5 to 40% by weight, based on the total weight of solids contained in the composition.

Abstract: Compounds of general formula I are disclosed ##STR1## wherein R.sup.1 denotes an unsubstituted or substituted carbocyclic or heterocyclic aryl radical,R.sup.2 and R.sup.3 are different from each other and either denote a hydrogen atom or a 4,6-bis-trichloromethyl-s-triazin-2-yl group, andn and m independently of each other, denote one of the numbers 0 and 1.The compounds are effective free-radical-forming photoinitiators and photolytically-activatable acid donors for photosensitive compositions.

Abstract: Compounds of general formula ##STR1## are disclosed in which R.sup.1 and R.sup.2 are different from one another and denote either a hydrogen atom or a radical of the formula ##STR2## R.sup.3 denotes a substituted or unsubstituted alkoxy, alkenyloxy, alkynyloxy or aryloxy radical, a hydroxyl group or a halogen atom andn the number 0 or 1.The compounds are useful intermediates for the preparation of photoinitiators and are themselves active as photoinitiators.

Abstract: A process for the preparation of an o-naphthoquinonediazide sulfonic acid ester is disclosed. Esterification of an o-naphthoquinonediazide sulfonic acid halide with a mono- or polyvalent phenolic compound in a solvent is performed in the presence of ammonia, of ammonium salts of weak acids or of aliphatic derivatives of ammonia having 1 to 3 carbon atoms, at a pH within the range from about 1.5 to about 8.5 and a temperature within the range from about 15.degree. C. to about 40.degree. C. The esters of o-naphthoquinonediazide sulfonic acid which are obtained by this process contain only small amounts of metal ions and can be used in photosensitive mixtures satisfying high requirements of the microelectronics industry.

Abstract: A light-sensitive mixture comprising a water-insoluble binder soluble in aqueous alkaline solutions, and the reaction product of a naphthoquinonediazidesulfonyl halide with a mixture composed of a low molecular weight compound having a definite structure and molecular size containing at least one phenolic hydroxyl group, and of a polymeric compound having recurring units, each of which contains at least one phenolic hydroxyl group. The mixture is useful in producing printing plates and photoresists and has the advantage that the naphthoquinonediazidesulfonic acid ester contained therein is non-explosive.

Abstract: An aqueous cationic surface-coating system contains an olefinically unsaturated surface-coating binder having basic nitrogen groups, some or all of which are converted into salts with acid, a Co, Mn, Pb, Ce, Zr, Ca, Zn, Fe, Al, Cu, Ni or Cd complex, if appropriate in combination with an inhibitor and/or an initiator which supplies free radicals.This surface-coating system can be used for cathodic electrocoating or for conventional methods of surface-coating.

Abstract: A light-sensitive diazonium group-containing polycondensation product of a diazonium salt corresponding to the general formula ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 denote hydrogen atoms, halogen atoms, alkyl groups having 1 to 3 carbon atoms or alkoxy groups having 1 to 6 carbon atoms, andX denotes the anion of the diazonium salt,and an aldehyde selected from the group consisting of dialdehydes, acetals of dialdehyde hydrates, and esters of dialdehyde hydrates, a process for producing such a light-sensitive polycondensation product and a light-sensitive recording material comprising a layer support and a light-sensitive layer containing such a light-sensitive polycondensation product.

Abstract: A light-sensitive mixture comprising a water-insoluble binder soluble in aqueous alkaline solutions, and the reaction product of a naphthoquinonediazidesulfonyl halide with a mixture composed of a low molecular weight compound having a definite structure and molecular size containing at least one phenolic hydroxyl group, and of a polymeric compound having recurring units, each of which contains at least one phenolic hydroxyl group. The mixture is useful in producing printing plates and photoresists and has the advantage that the naphthoquinonediazidesulfonic acid ester contained therein is non-explosive.

Abstract: This invention relates to a photosensitive copying composition comprising a solvent and a naphthoquinone-(1,2)-diazidesulfonic acid ester as the photosensitive compound, said naphthoquinone diazide sulfonic acid ester having the general formula I ##STR1## wherein: X is a single bond or one of the groups ##STR2## R.sup.1, R.sup.1' and R.sup.1" are the same or different and are H or D, R.sup.2 and R.sup.2' are the same or different and are H or halogen,R.sup.3 is halogen or D, andD is a naphthoquinone-(1,2)-diazidesulfonyloxy group.

Abstract: A surface-coating binder which is substantially free from epoxide groups is obtained by reacting Mannich bases, obtained from condensed phenols, secondary amines which contain at least one hydroxyalkyl group, and formaldehyde, with epoxy resins having an epoxide value of from 0.15 to 0.6, which carry blocked isocyanate groups. In the protonized form, the binders may be used for the cationic electrocoating of metal articles.

Abstract: Paint binder prepared by reacting Mannich bases (a) with an epoxide resin (b). The Mannich bases (a) are prepared from:1. a condensed phenol which is free from ether groups and contains at least two phenolic hydroxyl groups,2. a condensed phenol containing ether groups and also containing at least one phenolic hydroxyl group,3. a secondary amine containing at least one hydroxyalkyl group and4. formaldehyde.The paint binders may be used in protonized form for the cathodic electrocoating of electrically conducting surfaces.