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7029758 Melanin polyvinyl alcohol plastic laminates for optical applications  
The present invention relates to the use of water soluble melanin in solid plastic films of polyvinyl alcohol to be used in conjunction with other plastics to make laminated sheets or lenses. Such...
6881789 Polyubiquitin based hydrogel and uses thereof  
The present invention relates to a novel biopolymer consisting of a three-dimensional cross-linked mixture of (a) a cross-linking agent, activated with an activating agent, dissolved in a aqueous...
6517933 Hybrid polymer materials  
The invention is directed to a hybrid polymer material or system that combines naturally occurring building blocks with synthetic building blocks. The sets of naturally occurring and synthetic...
6297319 Water-absorbing agent and production process therefor  
The present invention provides: a process for producing a water-absorbing agent by using a crosslinking agent of high safety, wherein the water-absorbing agent is excellent in the absorption...
6291582 Polymer-protein composites and methods for their preparation and use  
A method of preparing a polymer-protein composite based upon placing a protein in solution in an organic phase via the ion-pairing of the protein with a surfactant. The polymer-protein composites...
5837747 Crosslinkable polysaccharides, polycations and lipids useful for encapsulation and drug release  
The present invention relates to a new form of biocompatible materials (e.g., lipids, polycations, polysaccharides) which are capable of undergoing free radical polymerization, e.g., by using...
5733538 Surface-modifying copolymers having cell adhesion properties  
A hemocompatible surface-modifying additive is provided for modifying polyurethane or polyurethane urea substrates. The additive has a polyurethane or polyurethane urea hard block or an alternative...
5219895 Collagen-based adhesives and sealants and methods of preparation and use thereof  
Collagen-based compositions as adhesives and sealants for medical use and preparation thereof are described. Prior to polymerization, soluble or partially fibrillar collagen monomers in solution...
5187207 Melanin hydrophilic contact lenses  
A hydrophilic contact lens is disclsoed incorporating melanin that protects the eye from harmful radiation and superoxide.
5112883 Medium incorporating melanin as an absorbing pigment against electromagnetic radiation  
The present invention is directed to a medium incorporating melanin for radiation protection.
5036115 Optical lens system incorporating melanin as an absorbing pigment for protection against electromagnetic radiation  
Melanin is used as the absorbing pigment for radiation protective eyeware. Thus, a melanin-plastic copolymer was formed by adding a catalyst (benzoyl peroxide) to the liquid monomer, diethylene...
4822867 Protein polymer grafts  
A novel class of materials and processes used in their preparation are described. These materials are comprised of man-made polymers grafted onto protein backbone, specifically onto protein...
4722986 Acid catalysts and methods of use  
Compositions containing sulfuric acid and one or more of certain chalcogen-containing compounds in which the chalcogen compound/H 2 SO 4 molar ratio is below 2 contain the mono-adduct of sulfuric...
4689381 Modified protein adhesive binder and process for producing using cationic monomers  
A modified vegetable protein adhesive binder and a process for producing the same is disclosed wherein an alkaline protein dispersion is formed of a vegetable protein material and said dispersion...
4447562 Amino-polysaccharides and copolymers thereof for contact lenses and ophthalmic compositions  
Aminopolysaccharides and copolymers thereof, primarily those of N-acetyl-D-glucosamines and derivatives and various monomers, is described.
4349624 Photographic silver halide material  
At least one gelatin-containing layer of a photographic silver halide material is hardened with a reaction product of two compounds corresponding to the formulae R(SO 2 --CHCH 2 ) n ...
4275054 Deodorants or deodorisers and compositions containing them  
A polyanionic polyamide salt which comprises chain units of the formula: ##STR1## in which X denotes ##STR2## R being an aliphatic radical containing 1 to 4 carbon atoms, each Y independently...
4267235 Polyglutaraldehyde microspheres  
Suspension polymerization of aqueous glutaraldehyde in basic conditions in presence of surfactants such as isobutoxy acrylamide copolymers and/or cross-linking agents yield cross-linked, water...
4233398 Process for the hardening of photographic layers utilizing fast acting hardener and polysaccharide  
Protein containing photographic layers are hardened by coating with a hardening solution which contains at least one quick-acting hardener which activates carboxyl groups and at least one...
4182695 Polyamide-fixed biologically active protein  
Biologically active protein compositions comprising protein or a protein substrate bound onto a polyamide of the general formula: ##STR1## in which R and R 1 , which may be the same or different,...
4171976 Homopolymerization inhibition of photographic hardeners  
It is disclosed to inhibit homopolymerization of a bis(vinylsulfonyl)alkane hardener for a hydrophilic colloid useful in forming a layer of a photographic element by associating with the hardener a...
4171311 Imides of thyroxin and triiodothyronine  
New fluorescently labeled thyroxin and triiodothyronine for use in competitive binding fluorescent assays of blood sera for thyroxin and triiodothyronine are described. The new materials have the...
4142897 Gelatino silver halide photographic material hardened with a reaction product of a vinylsulfonyl compound and a water soluble compound  
Gelatin, especially in a layer of a light-sensitive silver halide photographic material, is hardened with the reaction product of a compound having at least three vinylsulfonyl groups in the...
4119464 Process for hardening photographic layers containing gelatine  
In a process for hardening gelatine containing photographic layers, in particular multilayered photographic films, using conventional hardeners and quick acting hardeners, the surface of a layer...
4119589 Process for fixing proteins onto carriers  
Biologically active proteins are immobilized onto a carrier by reacting a compound containing at least two secondary amino groups at a temperature of from -80° to +50° C with a chlorination agent...
4111926 Hardening agent for gelatin and method for hardening gelatin  
A hardening agent for gelatin comprising a compound represented by the formula (I): ##STR1## wherein R represents an n-valent organic group, Z represents an atomic group necessary to complete a 5-...
4108848 Method for hardening gelatin  
Gelatin, particularly gelatin films of light-sensitive silver halide photographic materials, are hardened by treating with a combination of a compound having at least two vinylcarbonyl groups in...
4104444 Fiber reinforced chemically modified protein articles  
Disclosed are fiber-reinforced articles made of chemically-modified protein, such as sausage casings, and a method of producing such articles characterized by the steps of reacting a solution of a...
4096137 Gelatin hardening agents  
Gelatin hardening agents represented by the following formulae (I) or (II): a 1 --b 1 --r 1 --b 2 ) n A 2 (I) (a 1 --b 1 ) 3 r 2 (ii) wherein A 1 and A 2...
4081329 Preparation of carrier-bound macromolecular compounds  
Carrier-bound macromolecular compounds, especially bioactive macromolecular compounds, are produced by reacting a macromolecular compound A with a coupling compound B containing at least one...
4061466 Biologically active composition and the use thereof  
Immobilized biologically active substances comprising microporous, spherical particles in gel form and in the form of a three-dimensional network. These particles contain the biologically active...
4052373 Process for hardening gelatin  
A process for hardening, e.g., gelatin, in particular, a gelatin used for photographic light-sensitive materials, which comprises treating gelatin, a non-gelatin hydrophilic high molecular weight...
4048416 Thiopolymers, their derivatives and methods for their preparation and use  
A method for producing products for separation, ion exchange or as basic material for the preparation of various derivatives designed for separation purposes and adsorption purposes by means of a...
4045239 Process for the production of thermoplastic synthetic materials and plastic shaping materials of chemically modified protein and a chemical plasticizer and including a bisacrylamide or bismethacrylamide  
This invention relates to a process for the production of a thermoplastic synthetic material of chemically modified protein, which comprises mixing an aqueous alkaline protein solution with an...
4038140 Process for binding biologically active proteins  
Biologically active proteins are bound onto an insoluble carrier by reacting such protein in an aqueous phase with a carrier comprising an activated polysaccharide having a hydrophilic graft...
4036823 Barbituric acid antigenic conjugates, their preparation, antibodies and use  
Antigenic barbituric acid conjugates are produced by coupling the hapten acid through its 3-position to an immunogenic carrier. The antigens thus produced can be used to raise antibodies in...
RE29305 Hydrophilic-colloid silver halide emulsion hardened with a bisvinylsulfonyl compound  
Photographic elements are disclosed containing a hydrophilic colloid layer hardened with a compound having two vinylsulfonyl radicals coupled through a divalent hydrocarbon radical chosen from the...
4028320 Method of hardening gelatin using sulfonyl compounds  
A method of hardening gelatin which comprises adding thereto a compound of the following general formula (I): ##STR1## in which Y 1 is CH 2 =CH--, ClCH 2 --CH 2 --, BrCH 2 --CH 2 --, CH 3 ...
3977954 Sensitized vapor phase photo-grafting of monomers onto surfaces  
A process for the vapor phase graft copolymerization of a monomer vapor onto a polymeric substrate in the presence of a source of light at low energy levels and a photosensitive vapor (e.g. a...
3880665 Hardening with a heterocyclic carbamoyl ammonium compound of a photographic material containing a silver halide layer  
As rapidly acting hardeners for protein-containing photographic layers carbamoyl ammonium compounds are used the quaternised nitrogen atom of which being present in a 5- or 6-membered heterocyclic...
3846386 CROSS-LINKED COPOLYMER ACRYLONITRILE FIBERS OR FILMS  
Cross-linked acrylic fibers or films which are of improved hot water-resistance and have a silky hand or feel, are obtained by (i) preparing an acidic solution of a copolymer obtained by...
3840370 CONTROLLING AFTER-HARDENING IN HARDENABLE HYDROPHILIC COLLOIDS  
Blends of A. diacrylamide, plus B. 1,7-dichloro-3,3,5,5-tetraoxo-3,5-dithiaheptane exhibit synergism with respect to controlling beneficially the "afterhardening" that is usually observed when, for...
3836433 FIXATION OF NITROGENOUS MATERIALS  
Dialdehydes, e.g., glyoxal or glutaraldehyde are used to fix nitrogenous erials, e.g., amino acids, proteins, enzymes, antigens, hormones, etc., to insoluble supports which form gels in aqueous...
3721564 GELATINO SILVER HALIDE EMULSION CONTAINING A HALOGENATED ALDEHYDE ACID AND A PERHYDROTRIAZINE COMPOUND AS HARDENING AGENTS  
A photographic silver halide emulsion element comprising a gelatin layer including therein as a combination of hardening agents, a hexahydro-1,3,5-triazine carrying at least two N-vinylcarbonyl or...
3642486 VINYLSULFONYL-CONTAINING COMPOUNDS AS HARDENING AGENTS  
Compositions of matter comprising certain compounds containing two vinylsulfonylalkyl groups attached to a single heteroatom are disclosed as effective hardening agents for hardenable material....
3630741 ADHESIVE GELATIN-TERPOLYMER MATERIALS HAVING AT LEAST ONE CONJUGATED VINYLENE DICARBONYL COMPOUND ADDED TO THE EMULSION POLYMERIZATION REACTION MIXTURE  
The introduction of at least one conjugated vinylene dicarbonyl compound into an emulsion polymerization reaction mixture comprising water, monomers and gelatin used to produce gelatin-terpolymer...
3501301 COATING COMPOSITIONS FOR POLYESTER SHEETING AND POLYESTER SHEETING COATED THEREWITH  
3442826 METHOD OF PREPARING POLYPEPTIDE GRAFT COPOLYMERS  
3370952 Color formers  
3313749 Method of producing a modified proteinethyleneically unsaturated monomer graft co-polymer  
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