| Patent Number |
Title Of Patent |
Date Issued |
| 7307192 |
Process for the preparation of 1-phenylindan photoinitiators |
December 11, 2007 |
| The invention relates to a process for the preparation of a crystalline isomeric mixture of compounds of formulae (I) and (II) which process comprises the following steps: a) the slow addition of aluminium chloride, in portions, to a solution comprising 1,1,3-trimethyl-3-phenylindan |
| 7084183 |
Difunctional photoinitiators |
August 1, 2006 |
| The invention relates to .alpha.-hydroxy ketones of formula I or IIa; or mixtures of compounds of formula I and II; or mixtures of compounds of formulae Ia and IIa ##STR00001## |
| 6191182 |
Phenyl alkyl ketone substituted by cyclic amine and a process for the preparation thereof |
February 20, 2001 |
| A novel process for the preparation of compounds of formula I ##STR1##by aminolysis of a p-halophenyl alkyl ketone of formula II ##STR2##with a cyclic amine of formula III ##STR3##in water at a temperature of at least 130.degree. C., in which formulae X is a halogen atom and R.sub.1, |
| 5977357 |
Phenyl alkyl ketone substituted by cyclic amine and a process for the preparation thereof |
November 2, 1999 |
| A novel process for the preparation of compounds of formula I ##STR1## by aminolysis of a p-halophenyl alkyl ketone of formula II ##STR2## with a cyclic amine of formula III ##STR3## in water at a temperature of at least 130.degree. C., in which formulae X is a halogen at |
| 5795985 |
Phenyl alkyl ketone substituted by cyclic amine and a process for the preparation thereof |
August 18, 1998 |
| A novel process for the preparation of compounds of formula I ##STR1## by aminolysis of a p-halophenyl alkyl ketone of formula II ##STR2## with a cyclic amine of formula III ##STR3## in water at a temperature of at least 130.degree. C., in which formulae X is a halogen at |
| 5629356 |
A-aminoacetophenones as photoinitiators |
May 13, 1997 |
| Compounds of the formula I, II, III and IIIa ##STR1## in which Ar.sup.1 is an unsubstituted or substituted aromatic radical and at least one of the radicals R.sup.1 and R.sup.2 is an alkenyl, cycloalkenyl or arylmethyl group, are effective photoinitiators for photopolymerization |
| 5616787 |
Process for the preparation of alkylated aromatic carboxylic acids and acyl halides |
April 1, 1997 |
| The invention relates to a process for the preparation of polyalkylated aromatic carboxylic acids of formula I ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are each independently of one another hydrogen, C.sub.1 -C.sub.20 alkyl, halogen or C.sub.5 -C.sub.8 cycl |
| 5554663 |
.alpha.-aminoacetophenones as photoinitiators |
September 10, 1996 |
| Compounds of the formula I, II, III and IIIa ##STR1## in which Ar.sup.1 is an unsubstituted or substituted aromatic radical and at least one of the radicals R.sup.1 and R.sup.2 is an alkenyl, cycloalkenyl or arylmethyl group, are effective photoinitiators for photopolymerization |
| 5534629 |
.alpha.-aminoacetophenones as photoinitiators |
July 9, 1996 |
| Compounds of the formula I, II, III and IIIa ##STR1## in which Ar.sup.1 is an unsubstituted or substituted aromatic radical and at least one of the radicals R.sup.1 and R.sup.2 is an alkenyl, cycloalkenyl or arylmethyl group, are effective photoinitiators for photopolymerization |
| 5510539 |
Liquid photoinitiator mixtures |
April 23, 1996 |
| Liquid highly active photoinitiators are obtained by dissolving a solid photoinitiator of the titanocene type in liquid photoinitiators of the acetal or ketal type. The liquid mixtures have a long dark storage stability. |
| 5306600 |
Oxygen-containing titanocenes, and the use thereof |
April 26, 1994 |
| Titanocenes of the formula I ##STR1## in which R.sup.1 are cyclopentadienyl.sup..crclbar. groups and R.sup.2 and R.sup.3 are aromatic radicals which are substituted in both ortho-positions by fluorine and, in addition, are substituted by an acyloxy group are suitable as photoini |
| 5288917 |
Liquid photoinitiator mixtures |
February 22, 1994 |
| Liquid highly active photoinitiators are obtained by dissolving a solid photoinitiator of the titanocene type in liquid photoinitiators of the acetal or ketal type. The liquid mixtures have a long dark storage stability. |
| 5210110 |
Silylated acylphosphine oxides |
May 11, 1993 |
| Silylated acylphosphine oxides of formula I ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 are defined in the specification, are highly suitable as photoinitiators for the photopolymerization of compounds which can be polymerized by means of free radicals, namely ethylenically un |
| 5192642 |
Oxygen-containing titanocenes, and the use thereof |
March 9, 1993 |
| Titanocenes of the formula I ##STR1## in which R.sup.1 are cyclopentadienyl.sup..crclbar. groups and R.sup.2 and R.sup.3 are aromatic radicals which are substituted in both ortho-positions by fluorine and, in addition, are substituted by an acyloxy group are suitable as photoini |
| 5147901 |
Propionphenone derivatives as photoinitiators for photopolymerization |
September 15, 1992 |
| Propiophenones of the formula I ##STR1## in which R.sup.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl, --Si(CH.sub.3).sub.3, allyl or benzyl, R.sup.2 is hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.4 -alkyl which is substituted by C.sub.1 -C.sub.4 -alkoxy or --OH, --(CH.sub.2 --C |
| 5145885 |
Photopolymerizable compositions containing aminoaryl ketone photoinitiators |
September 8, 1992 |
| The photopolymerizable composition described containsA) at least one ethylenically unsaturated photopolymerizable compound,B) a photoinitiator of the formula I ##STR1## and C) a photosensitizer from the group of aromatic carbonyl compounds having a triplet energy of 225-310 kJ/mol, for |
| 5106722 |
Titanocenes, the use thereof, and N-substituted pyrroles |
April 21, 1992 |
| Titanocenes containing two 5-membered cyclodienyl groups, for example cyclopentadienyl, and one or two 6-membered carbocyclic or 5- or 6-membered heterocyclic aromatic rings which are substituted by a fluorine atom in at least one of the two ortho-positions to the titanium-carbon bon |
| 5095044 |
Oligomeric benzil ketals and their use as photoinitiators |
March 10, 1992 |
| Compounds of the formula I ##STR1## in which n is 1-30 and X, Y, R, Ar.sup.1 and Ar.sup.2 are as defined in claim 1 can be prepared by reaction of a benzil dialkyl ketal with a diol. Depending on the molar ratio of the two reaction components, products having a different polycond |
| 5077402 |
Novel alpha-aminoacetophenones as photoinitiators |
December 31, 1991 |
| Compounds of the formula I, II, III and IIIa ##STR1## in which Ar.sup.1 is an unsubstituted or substituted aromatic radical and at least one of the radicals R.sup.1 and R.sup.2 is an alkenyl, cycloalkenyl or arylmethyl group, are effective photoinitiators for photopolymerization |
| 5068371 |
Novel nitrogen-containing titanocenes, and the use thereof |
November 26, 1991 |
| Titanocenes of the formula I ##STR1## in which R.sup.1 are cyclopentadienyl.sup..crclbar. groups and R.sup.2 and R.sup.3 are aromatic radicals which are substituted in both ortho-positions by fluorine and, in addition, are substituted by a pyrrylalkyl group, amidoalkyl group or i |
| 5026625 |
Titanocenes, the use thereof, and n-substituted fluoroanilines |
June 25, 1991 |
| Titanocenes containing two 5-membered cyclodienyl gropus, for example cyclopentadienyl, and one or two 6-membered carbocyclic or 5- or 6-membered heterocyclic aromatic rings which are substituted by a fluorine atom in at least one of the two ortho-positions to the titanium-carbon bon |
| 5008302 |
Titanocenes, the use thereof, and N-substituted pyrroles |
April 16, 1991 |
| Titanocenes containing two 5-membered cyclodienyl groups, for example cyclopentadienyl, and one or two 6-membered carbocyclic or 5- or 6-membered heterocyclic aromatic rings which are substituted by a fluorine atom in at least one of the two ortho-positions to the titanium-carbon bon |
| 4992547 |
Aminoaryl ketone photoinitiators |
February 12, 1991 |
| The photopolymerizable mixture described contains(A) at least one ethylenically unsaturated photopolymerisable compound,(B) a photoinitiator of the formula I ##STR1## and (C) a photosensitiser from the group of aromatic carbonyl compounds having a triplet energy of 225-310 kJ/mol, for ex |
| 4960746 |
Liquid photoinitiator mixtures |
October 2, 1990 |
| Liquid, highly active photoinitiators are obtained by dissolving a solid photoinitiator of a titanocene type in liquid photoinitiators of the type of the .alpha.-hydroxy- or .alpha.-amino-acetophenones or in a liquid mixture of an .alpha.-hydroxy- or .alpha.-aminoacetophenone photocuring |
| 4950795 |
Oligomeric benzil ketals and their use as photoinitiators |
August 21, 1990 |
| Compounds of the formula I ##STR1## in which n is 1-30 and X, Y, R, Ar.sup.1 and Ar.sup.2 are as defined in claim 1 can be prepared by reaction of a benzil dialkyl ketal with a diol. Depending on the molar ratio of the two reaction components, products having a different polycond |
| 4900823 |
Phenyl ketone derivatives |
February 13, 1990 |
| Compounds of the formula I, II or III ##STR1## in which Ar and Ar' are an oxygen-containing aromatic radical, R.sup.1 and R.sup.2 are a monovalent hydrocarbon radical which is substituted or unsubstituted, or R.sup.1 and R.sup.2 together form alkylene, oxaalkylene or azaalkylene, |
| 4837350 |
Process for the preparation of benzoin sulfonates |
June 6, 1989 |
| Benzoin esters of aromatic sulfonic acids can be obtained in high yield from benzoin and the respective sulfonyl halide in molar amounts of a base by carrying out the reaction at low temperature in an organic solvent with the addition of water. Aqueous NaOh or KOH can be used as base in |
| 4795766 |
Propiophenone derivatives as photoinitiators for photopolymerization |
January 3, 1989 |
| Propiophenones of the formula I ##STR1## in which R.sup.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl, --Si(CH.sub.3).sub.3, allyl or benzyl, R.sup.2 is hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.4 -alkyl which is substituted by C.sub.1 -C.sub.4 -alkoxy or --OH, --(CH.sub.2 --C |
| 4739052 |
Phenyl ketone derivatives |
April 19, 1988 |
| Compounds of the formula I, II or III ##STR1## in which Ar and Ar' are an oxygen-containing aromatic radical, R.sup.1 and R.sup.2 are a monovalent hydrocarbon radical which is substituted or unsubstituted, or R.sup.1 and R.sup.2 together form alkylene, oxaalkylene or azaalkylene, |
| 4582862 |
Ketone with morpholino and s-phenyl groups as photoinitiator in pigmented coating |
April 15, 1986 |
| Compounds of the formula I, II or III ##STR1## in which Ar is a sulfur-containing aromatic radical, R.sup.1 and R.sup.2 are a monovalent hydrocarbon radical which is substituted or unsubstituted or R.sup.1 and R.sup.2 together form alkylene, oxaalkylene or azaalkylene, R.sup.3 is |
| 4559371 |
Photocurable colored compositions employing alpha-amino phenone initiator |
December 17, 1985 |
| Compounds of the formula I, II or III ##STR1## in which Ar and Ar' are an oxygen-containing aromatic radical, R.sup.1 and R.sup.2 are a monovalent hydrocarbon radical which is substituted or unsubstituted, or R.sup.1 and R.sup.2 together form alkylene, oxaalkylene or azaalkylene, |
| 4498964 |
Process for the photopolymerization of unsaturated compounds |
February 12, 1985 |
| Compounds of the formula I, II, III, IV or V ##STR1## in which Ar, X, Y, Y', R.sup.1 to R.sup.5 and R.sup.1' to R.sup.5' are as defined in claim 1, can be used as photoinitiators for the photopolymerization of unsaturated compounds. They can be prepared by a Diels-Alder reaction |
| 4321118 |
Bis benzoyl sensitizers for photopolymerization or photo cross linking process and composition |
March 23, 1982 |
| Aromatic-aliphatic ketones of the formulae I, II, III or IV ##STR1## wherein n is 1 or 2, Ar is an aryl radical, R.sup.1 and R.sup.2 are monovalent aliphatic, cycloaliphatic or araliphatic radicals, R.sup.3 is a direct bond or a divalent organic radical, X is a hydroxyl or amino grou |
| 4315807 |
Sensitizers for photopolymerization |
February 16, 1982 |
| Aromatic-aliphatic ketones of the formulae I, II, III or IV ##STR1## wherein n is 1 or 2, Ar is an aryl radical, R.sup.1 and R.sup.2 are monovalent aliphatic, cycloaliphatic or araliphatic radicals, R.sup.3 is a direct bond or a divalent organic radical, X is a hydroxyl or amino grou |
| 4308400 |
Sensitizers for photopolymerization |
December 29, 1981 |
| Aromatic-aliphatic ketones of the formulae I, II, III or IV ##STR1## wherein n is 1 or 2, Ar is an aryl radical, R.sup.1 and R.sup.2 are monvalent aliphatic, cycloaliphatic or araliphatic radicals, R.sup.3 is a direct bond or a divalent organic radical, X is a hydroxyl or amino group |
