Matches 51 - 100 out of 159 < 1 2 3 4 >


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4491629 Water soluble photoresist composition with bisazide, diazo, polymer and silane  
Photoresist compositions based upon a water-soluble polymer are disclosed together with a water-soluble bisazide compound as a cross-linker, a water-soluble adhesion-improving diazo compound are...
4487826 Diazotype heat development recording medium with hydrophobic salt of alkyl substituted guanidine  
A diazotype heat development recording medium of the present invention has excellent shelf life and heat sensitivity. The medium comprises a support and a recording layer which is formed on said...
4486529 Dialo printing plate made from laser  
This invention relates to an improvement in a photochemical process for the preparation of printing plates wherein a printing plate comprising a photosensitive composition coated on a support is...
4486518 Duplicating film mask with radiation absorbing benzophenone in processed positive-working radiation sensitive layer on transparent substrate  
A non-silver, positive-working, essentially alkali-insoluble, radiation-sensitive composition, which becomes alkali-soluble on exposure to radiation, comprising a non-silver, positive-acting,...
4467024 Process for the production of thermo-developable type diazo copying material  
A process for the production of a thermo-developable type diazo copying material which comprises the steps of adding a heat fusible color assistant having a melting point of 50° to 150° C. to at...
4452876 Steam, water or heat developing diazotype material  
The invention concerns a heat, steam or water developing diazotype material, containing a photosensitive diazonium salt stabilized with a non-diffusing acid and also one or several developing...
4446218 Sulfur and/or amide-containing exposure accelerators for light-sensitive coatings with diazonium compounds  
This invention relates to proof film-type light sensitive diazonium materials containing accelerators selected from sulfur and/or amide-containing compounds which are capable of accelerating the...
4428807 Composition containing polymerizable entities having oxirane groups and terminal olefinic unsaturation in combination with free-radical and cationic photopolymerizations means  
Photocurable resin compositions result from a mixture of polymerizable entities containing both terminal olefinic unsaturation and oxirane groups and a bifunctional curing system capable of...
4425419 Photosensitive composition  
An amphoteric surfactant is added to a photosensitive composition consisting essentially of an aromatic diazonium salt and used to prepare a fluorescent screen of a color picture tube.
4419431 One- or two-component diazo-type material with diphenyl diamine as light fade inhibitor  
This invention relates to a one- or two-component diazo-type material with improved light stability and duplication capabilities. This is accomplished by using compounds of the general formula...
4419432 Diazotype composition stabilization  
Caprolactam, caprylolactam, and azacyclooctanone have been found to be equally effective as thiourea in stabilizing diazotype compositions and materials against pre-coupling, loss of shelf life,...
4410623 Phthalaldehyde adduct and imaging compositions, elements and methods incorporating same  
Novel adducts of phthalaldehyde are disclosed, as well as imaging compositions and imaging elements incorporating them. A method is also disclosed for minimizing dimensional changes in the element...
4403028 Light sensitive diazonium salts and diazotype materials  
Disclosure is made of a class of diazonium salts characterized in part by their improved thermal stability and non-flammability. The salts are useful in diazotypy.
4401744 Diazotype compositions with improved printing performance  
Disclosure is made of a light-sensitive diazo coating composition and a light-sensitive diazotype reproduction material comprising a base with at least one coating layer comprising a light...
4400456 Thermo-developable type diazo copying material  
A thermo-developable type diazo copying material is disclosed comprising a substrate and a photosensitive layer, formed thereon, consisting essentially of a diazo compound, a coupler and a color...
4394433 Diazonium imaging system  
A novel light sensitive, heat developable imaging system incorporating a diazonium salt and a leuco dye in a binder is disclosed.
4387150 Fixable thermosensitive recording sheet  
A fixable thermosensitive recording sheet with excellent shelf life and high developed color density is obtained by using a hydrophobic guanidine derivative as heat-fusible developer in a...
4377630 Photosensitive composition  
A photosensitive composition improved in sensitivity by adding a salt of a compound represented by the general formula: ##STR1## (wherein R1 and R2 each represents a straight chain alkyl group,...
4370401 Light sensitive, thermally developable imaging system  
An imageable layer comprising a polymeric binder, a bleachable dye or a leuco dye, a nitrate salt, and a photosensitive diazonium salt, the nitrate salt in the imageable layer being capable of...
4308341 Non-silver imaging compositions having improved speeds and processing temperatures  
There are disclosed an imaging composition, element and method featuring an aromatic dialdehyde that reacts with an exposure-generated amine to form a dye. The photographic speed of the reaction...
4307171 Negative-working diazo type photoreproduction having improved D-min and line acuity  
Negative-working diazography material is comprised of (i) at least one hexafluorophosphate diazonium salt adapted to photolytically cleave into an acid catalyst, (ii) at least one acid labile...
4297428 Process for making diazo photosensitive paper  
A process for making a diazo photosensitive paper which comprises adding a specified ultraviolet absorber to a photosensitive layer consisting of a diazonium salt and a coupler, adding the...
4296194 Positive-working light sensitive diazo materials with azo dye  
A positive working light-sensitive composition comprises in admixture (a) a first component which is an azo dye formed by reacting a p-amino-benzene diazonium salt and a compound including the...
4289839 Negative image diazography formulation with acid labile coupler, diazonium compound and carboxylic acid anhydride  
Negative-working diazography material is comprised of (i) at least one diazonium compound, (ii) at least one acid labile enolic, preferably phenolic blocked-coupler adapted to be converted in the...
4247615 Continuous-tone dyed diazo imaging process  
There is disclosed a composition and element, comprising a diazo resin and a mordant for anionic dyes that is compatible with the resin. The element of the invention is suitable for dye immersion...
4243737 Image forming composition and elements with Co(III) complex, conjugated π bonding compounds and photoreductant  
An image-forming element is disclosed comprised of a support and a coating thereon containing a cobalt(III)complex and a compound containing a conjugated π bonding system capable of forming at...
4232106 Photosensitive compositions containing 2-halomethyl-5-vinyl-1,3,4-oxadiazoles as free radical progenitors  
Photosensitive compositions containing 2-halomethyl-5-vinyl-1,3,4-oxadiazole compounds represented by the following general formula (I): ##STR1## wherein W represents a substituted or...
4163672 Photosensitive composition  
This invention relates to a photosensitive composition comprising an ester or an amide of an o-naphthoquinone diazide sulfonic or carboxylic acid and, based upon the amount of this compound, about...
4131466 Photographic method of making relief member with negative dye image  
A lithographic photographic material has a photosensitive layer comprising gelatin having an isoelectric point of at least 7 and a condensation product formed between a diazonium salt of a...
4088496 Heat developable photographic materials and process  
An activator precursor, which is preferably an activator-stabilizer precursor, containing a base portion and an acid portion has improved properties when the acid portion is a...
4076537 Light-sensitive materials containing organo tellurium or selenium compounds and sensitizers  
A light-sensitive material comprising a layer containing: (a) at least one organic compound containing tellurium and/or selenium; and (b) at least one sensitizing compound selected from the...
4075019 High gain cobalt(III)complex composition and element  
An image-forming element is disclosed comprised of a support and a coating thereon containing a cobalt(III)complex and a compound containing a conjugated π bonding system capable of forming at...
4004925 Production of photomasks by forming complex of silver and diazonium or pyrylium salts  
A photomask comprising a support that is transparent to ultra-violet radiation and visible light and a layer incorporating a photomask image, the image parts of which contain a complex compound of...
3985562 Diazo recording process and material  
A diazo recording process which comprises the steps of (1) information-wise exposing to ultra-violet light and (2) overall heating a recording material comprising a compound yielding an amine on...
3964911 Photographic reproduction processes using diazonium salts and substituted spiro[benzopyrane]  
Photosensitive compositions which include a homogeneous mixture of A. at least one diazonium salt which is photodecomposable into phenol; B. at least one spiropyran compound which is...
3929488 Light sensitive diazo composition with azo dye formed from a diazonium salt and a novolak resin  
A light-sensitive positive-working composition for printing plate manufacture comprises, in admixture, a diazonium salt of a strong acid, a novolak resin and an azo-dye which undergoes a colour...
3899335 Diazotype elements and processes with carbodiimide dehydrating agents to generator couplers  
A light-sensitive, heat-developable diazotype element comprising a light-sensitive diazonium salt, a solid carbodiimide dehydrating agent, and a solid coupler precursor in the form of an...
3873316 PROCESS FOR THE PRODUCTION OF A LIGHT-SENSITIVE COPYING MATERIAL HAVING A COPPER-CONTAINING SUPPORT, AND COPYING MATERIAL SO PRODUCED  
This invention relates to a process for improving the adhesiveness of a negative-working copying layer to a copper-containing support. The invention also relates to a presensitized...
3816278 PHOTOPOLYMERIZABLE EPOXY SYSTEMS CONTAINING NITRILE GELATION INHIBITORS  
Polymerization of epoxides and mixtures of epoxides with lactones and vinyl compounds, polymerizable through the action of cationic catalysts, is controlled in compositions essentially free of...
3791832 DIAZOTYPE PHOTOPRINTING MATERIAL  
This invention describes diazotype photoprinting material containing as a coupling component a compound of the formula: ##SPC1## Wherein R1 and R2 are hydrogen, alkyl, phenyl, or taken together...
3779768 FLUOROCARBON SURFACTANTS FOR VESICULAR FILMS  
Fluorocarbon surfactants are added to vesicular films to improve the sensitivity thereof, while further maintaining very small vesicle size in the development image which results in films of...
3778274 SPECTRALLY SENSITIZED DIAZO MATERIAL  
A dithiocarbamate is mixed with a photolytic aromatic diazo compound to improve the intrinsic sensitivity and spectral sensitivity of the photosensitive material for diazo photography.
3642483 THERMALLY DEVELOPABLE DIAZOTYPE COPYING MATERIALS  
A thermally developable diazotype copying material is manufactured which comprises a supporting sheet and a light-sensitive copying layer coated on said supporting sheet, said layer consisting of...
3632344 DIAZO-TYPE MATERIAL USING ALPHA-PYRONE ULTRAVIOLET RADIATION ABSORBERS  
Alpha-pyrone compounds are employed to provide colorless, lightfast ultraviolet radiation absorber materials. In addition to being normally colorless these materials are noncoloring due to their...
3615537 HEAT-DEVELOPABLE DIAZOTYPE MATERIAL  
Diazo-type material readily developable by heat, having good keeping quality, and producible economically by aqueous coating techniques, comprises a light-sensitive layer containing, with a diazo...
3615574 THERMOGRAPHIC DIAZO-TYPE COPYING PAPER  
A thermographic diazo-type copying paper which is prepared by applying, onto a support, a mixed solution containing a diazo compound, a coupler, an acid stabilizer and a thermally decomposable...
3615467 PHOTOLYSABLE COMPOUNDS AND THEIR USES IN PHOTOGRAPHIC PROCESSES  
Radiation-sensitive compositions and recording materials containing compositions which are light- and heat-sensitive and which include a photolysable compound having the formula: wherein Each of...
3539345 THERMAL DIAZOTYPE PAPERS  
3525618 DIAZOTYPE FILM MATERIALS  
3522050 HEAT DEVELOPABLE DIAZOTYPE COPY PAPER  

Matches 51 - 100 out of 159 < 1 2 3 4 >