摘要:
A light-sensitive, diazonium group-containing polycondensation product is described which comprises(a) an optionally substituted diphenylamine-dianzonium salt I.(b) a compound corresponding to the formula IIR.sup.4 --O--CH.sub.2 --R.sup.5 (II) whereinR.sup.4 is H, alkyl or acyl, andR.sup.5 is an optionally substituted aromatic radical, and(c) a compound corresponding to the formula IIIR.sup.6 --O--CH.sub.2 --R.sup.8 --CH.sub.2 --O--R.sup.7 (III) whereinR.sup.6 and R.sup.7 are H, alkyl, or acyl andR.sup.8 is the radical of a compound selected from the group consisting of aromatic hydrocarbons, phenols, phenolethers, aromatic thioethers, aromatic heterocyclic compounds, and organic acid amides,with the radicals resulting from compound II being directing linked to the units of the diazonium salt I.In the production of the polycondensation product, I is first condensed with II and then with III. The product is suitable for use as a light-sensitive substance in recording materials, particularly in printing plates, and yields light-hardening products which have an increased oleophilicity.
摘要:
A photosensitive mixture comprised of(a) a diazonium salt polycondensation product comprising recurring units of the formulas A--N.sub.2 X and B, which units are linked by bivalent intermediate members derived from a carbonyl compound which is capable of condensation, wherein the A--N.sub.2 X units are derived from aromatic diazonium compounds that are capable of condensation with formaldehyde, and the B units are derived from compounds which are free from diazonium groups and are also capable of condensation with formaldehyde in a strongly acidic medium;(b) a compound which can be polymerized by a free-radical process;(c) a photopolymerization initiator; and(d) a polymeric binder that is insoluble in water, but soluble in organic solventscan be used in the production of photosensitive printing plates and photoresists.
摘要:
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.
摘要:
The invention relates to a foodstuff casing based on regenerated cellulose with a reinforcement made of synthetic fibers, to the use thereof as a synthetic sausage casing, and to methods for the production thereof. The synthetic fibers are made of thermoplastic materials, preferably polyolefins or copolymers with olefin units, polyacrylates, copolymers with acrylonitrile units, polyesters or copolyesters and/or aliphatic or (partially) aromatic polyamides or copolyamides.
摘要:
The present invention relates to novel 10-phenyl-1,3,9-triazaanthracenes and to a photopolymerizable mixture which contains, as the essential components,(a) a polymeric binder(b) a polymerizable compound having at least two terminal, ethylenically unsaturated groups and a boiling point of more than 100.degree. C., and(c) a 10-phenyl-1,3,9-triazaanthracene as the photoinitiator.
摘要:
Antimicrobial film based on biopolymers, in particular cellulose and/or protein, or uncoated or coated textile material, and also an antimicrobial sponge or an antimicrobial sponge cloth based on regenerated or precipitated cellulose are provided. The film, the sponge or the sponge cloth is impregnated or coated with at least one α-amino acid ester, the α-amino group of which is acylated with a fatty acid, or the corresponding hydrochloride, and the α-amino acid ester is bound covalently, optionally also ionically, to the film, the sponge or the sponge cloth. The acylated α-amino acid ester is preferably N-lauroyl-L-arginine ethyl ester monohydrochloride (LAECl), N-lauroyl-L-arginine methyl ester monohydrochloride (LAMCl) or N-lauroyl-L-lysine ethyl ester hydrochloride (LLECl). The film is preferably in the form of a flexible tube and is provided as casing for foods, especially sausage products.
摘要:
This invention relates to a food casing based on cellulose hydrate that further includes nanoscale additives. The nanoparticles measure from 0.5 to 1000 nm in at least one dimension. The nanoparticles can have uniform distribution in the cellulose hydrate matrix, or be on the surface, or can have been concentrated in those regions of the casing that are in the vicinity of the surface. The invention moreover relates to a process for production of the food casing and to its use as synthetic sausage casing.
摘要:
A dental implant comprises an implant screw (1) with an external thread (5), an implant abutment (3) and a tightening screw (4) which can be screwed into the implant screw (1) and by which the implant abutment (3) is connectable or connected with the implant screw (1), wherein the implant screw (1) rests against a contact surface (14, 15) of the implant abutment (3) with a contact surface (10, 11). To improve such dental implant, the implant screw (1) and the implant abutment (3) are made of a ceramic material at least in the region of their contact surfaces (10, 11; 14, 15). The contact surface (14, 15) of the implant screw (1) and the contact surface (14, 15) of the implant abutment (3) are ground in against each other.
摘要:
The invention relates to a wet-fast nonwoven, preferably a fiber paper, which comprises fibers from a cellulose-containing material and fibers from a thermoplastic material welded firmly together at their points of intersection. The fibers from the cellulose-containing material are preferably hemp fibers while the fibers from the thermoplastic material are preferably fibers from polypropylene, polyester or polyamide. The fibers are interlinked under the action of pressure and/or heat, especially using a pair of heated calender rolls. The nonwoven or the fiber paper is especially used to reinforce food casings based on regenerated cellulose, especially in artificial cellulose hydrate-based sausage skins.
摘要:
Disclosed is a preferably tubular food casing based on cellulose hydrate, one or both sides of which is/are provided with a coating containing crosslinked collagen fibrils and an also crosslinked, high-molecular gelatin. Preferably, low-molecular organic compounds comprising two or more reactive groups are used as crosslinking agents. The inventive food casing has characteristics resembling those of a skin fiber casing and is thus particularly suitable for producing raw sausages. The disclosed casing is virtually resistant against cellulytically active enzymes of mold-ripened raw sausages as a result of the coating used.