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4076538 |
Process for crosslinking hydrophilic colloids with triazine compounds
The present invention relates to a process for crosslinking hydrophilic materials by means of a triazine compound of the formula ##STR1## The process is preferably used for crosslinking gelatin in...
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4076526 |
Photoconductive N-vinyl carbazole copolymers and process for preparing same
The invention relates to photoconductive N-vinyl carbazole copolymers characterized as having electron donor and electron acceptor groups in the same polymeric chain and the use of said copolymers...
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4070530 |
Catalytic amination of polymeric polyols and resulting amino substituted polymers
Amino substituted polymeric polyols are produced through Group VIII metal catalytic amination of polymers comprising ethylenically unsaturated alcohols and copolymers of said alcohols and vinyl...
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4066581 |
Process for producing a bond between polyvinylene glycol and a substance containing primary amino groups
A bond is produced between a synthetic polymer containing vicinal hydroxyl groups and a substance containing primary amino groups by treating the polymer with a medium to strong oxidant until a...
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4065524 |
Film-forming light-sensitive polymeric material carrying azidosulfonyl groups
Photo-sensitive film-forming soluble polymeric materials containing one or two polymers which can be insolubilized photochemically are disclosed. These polymeric materials contain in the same or...
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4064110 |
Process for the production of autocrosslinkable polymers containing n-alkoxymethyl groups
Storable, autocrosslinkable polymers containing N-alkoxymethyl groups are obtained by reacting 5-alkoxymethyl-1,3,4-dioxazol-2-ones with a polymer having an average molecular weight above 600 and...
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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...
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4051096 |
Resin composition
This invention relates to a resin composition comprising an oil retainer, a base thermoplastic resin and an oil. The affinity of the oil retainer and base resin to the oil is defined to result in a...
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4049634 |
In-air curable resin compositions
A resin composition curable in air comprising (A) an unsaturated oligomer having a number average molecular weight of 500 to 4,000 and containing at least two acryloyl and/or methacryloyl groups at...
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4048410 |
Environmentally degradable polymer compositions
There are disclosed novel degradable plastic compositions consisting essentially of an organic polymer containing at least one organic chelating agent. The agent is one which chelates metal so as...
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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...
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4043995 |
Process for crosslinking hydrophilic colloids
The present invention relates to a process for crosslinking hydrophilic colloids, preferably gelatine and most preferably gelatine present in a photographic material. A 1,3,5-triazine compound...
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4038253 |
Photocross-linkable polymers containing pendant diazoester groups
It has been found that certain polymers containing pendant diazo ester groups are photosensitive and have utility in the preparation of both lithographic and relief printing plates, as well as for...
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4028315 |
Solid phase synthesis of peptides
A process for bonding an amino acid to an insoluble hydroxymethyl polymer by esterifying the C-terminal carboxyl group of an N-terminal protected amino acid with the hydroxyl group of an insoluble...
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4025704 |
Organic semiconductors
The amine salts of linear polyaniline compounds, including substituted polyaniline compounds, are useful, semiconductors. These materials are generally soluble in popular organic solvents and have...
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4025463 |
Organic semiconductor compositions
The amine salts of linear polyaniline compounds, including substituted polyaniline compounds, are useful, semiconductors. These materials are generally soluble in popular organic solvents and have...
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4016129 |
Hardenable coating composition
A hardenable coating composition which forms an excellent coating film having good properties of transparency, flexibility, hardness and noncombustibility and comprises an aqueous dispersion of...
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4016340 |
Hydroxyl-containing polymers having aminimide groups attached thereto through an ether linkage
This invention relates to novel polymers containing a plurality of hydroxyl groups having aminimide groups attached thereto through an ether linkage and to methods for attaching said aminimide...
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4012352 |
Polyvinyl alcohol microgels
Polyvinyl alcohol microgels which comprise stable fluids comprising water and about 0.05 to 10% by weight of polyvinyl alcohol partially crosslinked with tetravalent titanium ions, said microgels...
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4012572 |
Enzyme separation
A reactive matrix comprises a co-enzyme chemically attached to a water insoluble organic polymeric support material. The reactive matrix may be used in a process for the separation of mixtures...
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4002796 |
Conditioning of polyolefinic fibers for use in the manufacture of synthetic paper
Polyolefinic fibers for use in the manufacture of synthetic paper are rendered readily water-dispersible by pre-treatment with a hydrophilic polymer which is a condensate of polyvinyl alcohol and...
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4001201 |
Process for crosslinking hydrophilic colloids using vinyl substituted, SO.sub.2 containing, amine salt
The present invention relates to a process for crosslinking hydrophilic colloids which contain amino-, imino- and/or hydroxyl groups. Compounds of the formula ##EQU1## are used as crosslinking...
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3998792 |
Polyvinyl butyral polymer mixture for making intermediate sheeting for laminated glass
Mixtures of two distinct polyvinyl butyral grades, viz., one high viscosity and one low viscosity grade, both having a narrow molecular weight distribution exhibit good processing characteristics...
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3997508 |
Improvements in treatment of high-molecular-weight water-soluble compounds with glyoxal
A process for the manufacture of finely-powdered, water-soluble without formation of lumps, high-molecular weight compounds, preferably modified natural polymers, comprising dry mixing the...
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3992366 |
Process for crosslinking hydrophilic colloids
A process for crosslinking hydrophilic colloids which contain amino, imino and/or hydroxyl groups is provided. The crosslinking agents correspond to the formula ##SPC1## Wherein A is hydrogen,...
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3984494 |
Graft copolymers of vinyl acetate on polyethylene oxide as self-supporting capsules
An encapsulating material for drugs consisting of a modified polyvinyl alcohol which is a partially hydrolized graft copolymer of vinyl acetate on polyethylene oxide.
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3976621 |
Photodegradable copolymers of ethylene and vinyl alcohol containing ketoether groups
A copolymer of ethylene and vinyl alcohol which contains ketoether groups and is photodegradable under the direct action of sunlight is prepared by reacting an ethylene-vinyl alcohol copolymer with...
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3971743 |
Epoxy-azido compounds
Disclosed are epoxy-azido compounds of the formula ##EQU1## WHERE R is a polyvalent organic radical, R' is a hydrogen, alkyl, cycloalkyl, aryl, or aralkyl radical, A is ##EQU2## and n and m are...
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3969323 |
Photo-crosslinkable 2-pyrone polymers and processes for the manufacture thereof
This invention relates to a photo-crosslinkable polymer comprising units with side chains having 2-pyrone groups therein. The invention also relates to processes for the preparation of the novel...
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3965081 |
Isotactic and syndiotactic polyvinyl nitrates and processes for their formation
Stereoregular polyvinyl alcohol in acetic anhydride reacts with anhydrous tric acid at -10° to -15°C to form new stereoregular polyvinyl nitrate which is useful as a base for propellant...
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3963618 |
Novel polymer membranes for reverse osmosis
This case is directed to the preparation of polyvinyl acetal resins as semi-permeable membranes for use in the treatment of feed solutions by reverse osmosis, ultafiltration or related techinques.
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3962370 |
Shaped polymeric articles
A shaped polymeric article comprising from 1% to 60% by weight, preferably from 5% to 30% by weight of a cross-linked polymeric material having a glass-rubber transition temperature of not more...
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3959242 |
Silane grafted poly(vinyl alcohol) film
A thermoplastic composition suitable as a mold release surface for preparing cast articles which comprises a silane grafted poly(vinyl alcohol) prepared by the method which comprises incrementally...
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3959406 |
Polyelectrolyte composite of polyvinyl alcohol derivatives
A polyelectrolyte composite of polyvinyl alcohol derivatives; which comprises: an ionically bonded composite of a partial acetal of polyvinyl alcohol modified with diethoxyethyl trimethyl ammonium...
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3943150 |
Salt of b-diethylaminoethyl ester of p-aminobenzoic acid with acetal of polyvinyl alcohol and glyoxalic and method of preparing same
A salt of β-diethylaminoethyl ester of p-aminobenzoic acid with the acetal of polyvinyl alcohol and glyoxalic acid which has the formula: ##EQU1## wherein n is a degree of polymerization within...
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3941750 |
Polyvinylpyrenal--an intrinsic photoconductor and active matrix polymer
A polyvinylpyrenal copolymer obtained by condensing the corresponding aromatic aldehyde with a copolymer of vinyl alcohol and having a number average molecular weight of at least 5,000. Also...
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3934587 |
Disposable articles having a water-permeable and water-repellent surface
A novel material is disclosed and a process and apparatus for making the same, which process comprises reacting one side of a solid sheet or film of a polymeric compound containing reactable...
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3933746 |
Photopolymerizable polymers having anhydride-containing groups
The polymer herein described comprises an anhydride-containing group represented by the structure: ##EQU1## wherein R is a residue of a dibasic acid selected from the group consisting of aliphatic...
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3931068 |
Blends of biodegradable thermoplastic oxyalkanoyl polymer, a naturally occurring biodegradable product, filler and plastic additive
Blends comprising biodegradable thermoplastic oxyalkanoyl polymer, e.g., epsilon-caprolactone polymer, and naturally occurring biodegradable product, e.g., tree bark. These novel blends are useful...
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3931248 |
Reactive high polymer compound
A high polymer compound containing therein the reactive group represented by the following general formula; ##SPC1## Wherein X represents O or S; Y represents a hydrogen atom or a cyano group; and...
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3926918 |
Process for producing polyvinyl acetal
A process for preparing polyvinyl acetals by condensing polyvinyl alcohol with an aldehyde in the aqueous phase in the presence of an acid catalyst, wherein after the reaction system is maintained...
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3925290 |
Emulsions useful in the preparation of heat resistant fibers and films
A method for producing fibers and films comprising emulsion polymerizing a polyvinyl alcohol derivative having sulfone or sulfate group with a chlorine-containing vinyl monomer, adding the thus...
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3923757 |
Transparent adhesive
The extent of the usefulness of glass and polycarbonate in specialty windows depends on the properties of these two materials and the characteristics of transparent adhesives for the bonding of the...
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3919163 |
Biodegradable containers
Shaped containers fabricated from material comprising biodegradable thermoplastic oxyalkanoyl polymers, e.g., epsilon-caprolactone polymers, said containers possessing a medium to germinate and...
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3912697 |
Light-sensitive polymers
A novel class of light-sensitive polymers and their use in photographic reproduction is described. The polymers contain a light-sensitive moiety selected from the group consisting of...
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3901818 |
Hydrocarbon binding complex and process for its preparation
The invention concerns solid complexes for binding hydrocarbons and a process for their preparation. Said complexes are formed by an amine bound to a substrate (clay, glass, organic polymer)...
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3888844 |
Halogenated esters of phosphorus-containing acids (II)
This invention deals with new phosphorus containing polymeric esters having pendent groups therein of the formula ##SPC1## Obtained by the reaction of a polymer having at least 2 and preferably at...
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3880831 |
Process of producing carbamoylalkyl derivatives of high molecular compounds
A carbamoylalkyl derivative of a high molecular compound is produced with a good yield and low cost by conducting the hydrolysis of a cyanoalkyl derivative of the high molecular compound with...
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3879356 |
Light-sensitive polymeric compositions
A novel class of light-sensitive polymers and their use in photographic reproduction is described. The polymers contain a light-sensitive stilbene moiety selected from the group consisting of...
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3878171 |
Process for crosslinking hydrophilic colloids using unsaturated aldehydes containing N-heterocyclic rings
This invention relates to a process for crosslinking hydrophilic colloids, e.g., gelatine. The crosslinking agent corresponds to the formula X 1 --CR 1 =CH--Y 1 . R 1 represents a hydrogen atom...
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