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8129478 |
Polyester anhydride-based biopolymers
Biodegradable polymers formed from biodegradable polyester-based prepolymers, to which ring-structured anhydrides which have different hydrophobicities have been connected, and which are either...
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8034396 |
Bioadhesive composition formed using click chemistry
The present disclosure provides compositions which may be utilized as adhesives or sealants in medical and surgical applications. The compositions may, in embodiments, be formed from the...
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7470765 |
Method for producing polyamides
A process for preparing a polyamide by reacting a mixture which comprises a monomer which has a nitrile group and has at least one other functional group capable of forming a carboxamide group, and...
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7230067 |
Masterbatch and production method of oxygen-absorbing molded article
In the present invention, a masterbatch is produced by melt-mixing a metal compound (B) with a reactive thermoplastic resin (C). The oxidizable polyamide (A) is produced by polycondensing a diamine...
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7157204 |
Soluble polyimide for photosensitive polyimide precursor and photosensitive polyimide precursor composition comprising the soluble polyimide
A soluble polyimide for a photosensitive polyimide precursor and a photosensitive polyimide precursor composition including the soluble polyimide, wherein the soluble polyimide contains hydroxyl...
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7101959 |
Polymerization catalysts
A subject of the present invention is new compounds having a lanthanide and having a tridentate ligand, a process for their preparation and their use in particular as polymerization catalysts.
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7074851 |
Method for making stabilised polyamide compositions
The invention relates to a process for preparing stabilized compositions based on polyamide. The stabilizer is a phosphorus stabilizer selected from phosphorous acid and hypophosphorous acid. It is...
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6709750 |
Hot-melt adhesive for sealing the edge of laminated glass
The invention relates to a hot-melt adhesive for sealing the edge of laminated glass that has been produced according to cast-resin technology. The inventive adhesive comprises acrylate or...
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6703476 |
Method for the production of polyamides
Polyamides are prepared from aminonitriles and water by (1) reacting the aminonitriles with water at from 180 to 350° C. and such a pressure in the range from 30 to 120 bar that a gaseous phase is ...
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6531566 |
Polyoxyalkylenepolyols and process for producing ring-opened polymer
A polyoxyalkylene polyol or monool (I) of the general formula (1) below, in which not less than 40% of the terminally located hydroxyl-containing groups, namely —AO—H groups, are primary hyd...
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6525167 |
Method for producing polyamide 6 of a low extract content, high viscosity stability and low remonomerization rate
The continuous process for producing polyamides by reacting at least one aminonitrile with water comprises the following steps: (10) reacting at least one aminonitrile with water at a temperature...
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6437089 |
Process for the production of nylon 6
Process for making nylon 6 in which a feed stream containing a major portion of caprolactam and/or nylon 6 prepolymer and a minor portion of aminocapronitrile is fed to a multistage reactive...
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6353085 |
Method for producing polyamides
In a process for producing polyamides by polymerization of lactams in the presence of metal oxides as heterogeneous catalysts, the metal oxides are used in a form which permits mechanical removal...
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6337370 |
Inorganic-organic copolymer using polyvinylalcohol-silane coupling agent and preparation method thereof
Disclosed are inorganic-organic copolymers and their preparation using polyvinylalcohol-silane coupling agents. The inorganic-organic copolymers can be prepared through the reaction of...
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6291598 |
Process for the production of a polymerized material and the product produced thereby
A polymerized material produced by the polymerization of an organic amide monomer in the presence of an organic carbonate and a process for the preparation thereof. The process comprises the steps...
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6288207 |
Continuous method for producing polyamides from aminonitriles
The continuous process for producing a polyamide by reacting at least one aminonitrile with water comprises the following steps:(1) reacting at least one aminonitrile with water at a temperature...
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6174988 |
Use of polyamino acid salts in water-borne adhesive applications
This invention relates to an adhesive composition which comprises (a) an adhesive carrier, and (b) an adhesively effective amount of a polyamino acid salt selected from the group consisting of...
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6129982 |
Aromatic polyimide film having improved adhesion
In a heat-resistant aromatic polyimide/metal (or metal oxide) composite sheet composed of an aromatic polyimide film and a metal or metal oxide layer arranged on the film, the polyimide film is...
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5859178 |
Polymerization of caprolactam with certain quaternary ammonium compounds
A process for the polymerization of caprolactam to nylon-6 polymer, comprising the use of a polymerization accelerator having the structural formula ##STR1## wherein R1, R2, R3 and R4 are alkyl,...
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5830984 |
Synthesis of optically active helical ladder polymers with unbroken double-bond conjugation
Optically active ladder polymers that are chiral and have an unbroken network of conjugated double bonds along a helical path are synthesized.
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5776875 |
Use of biodegradable polymers in preventing scale build-up
A biodegradable scale inhibitor and dispersant is provided. The scale inhibitor includes a copolymer comprising at least one of N-oxygenatedhydrocarbonamide monomers and at least one of amino acid...
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5712331 |
Curable epoxy compositions containing aziridine in supercritical fluid carbon dioxide
A curable resin system in supercritical carbon dioxide as diluent includes an epoxy resin, a co-reactant selected from poly N-substituted aziridines, and a catalyst to promote cure at ambient...
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5668234 |
Reaction injection molding (RIM) of methyl (meth)acrylate and related monomers using group-4 catalysts
Acrylate monomers such as methyl methacrylate, or other suitable monomers such as lactams, lactones, or acrylamides, are polymerized by reaction injection molding (RIM) utilizing a combination of...
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5650482 |
Adhesion promoters
An at least two-step process for the preparation of polyamide resins wherein, in the first step, polyvalent carboxylic acids, optionally together with monovalent carboxylic acids, are reacted with...
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5627257 |
Process for the production of polyamides on the basis of α,ω-dinitriles
Process for synthesis of spinnable polyamide from α, ω-alkyldinitriles and α, ω-alkyldiamines and excess water, where a) the aqueous solution of the dinitrile is mixed with a catalytic amount of ...
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5599898 |
Insoluble, only slightly swellable polymers containing amino groups, their preparation and their use
Abstract of the Disclosure: Insoluble, only slightly swellable polymers containing amino groups, which can be obtained from popcorn polymers containing units of the structure ##STR1## where R and...
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5554722 |
Aromatic polyamide compositions with improved electrostatic properties, formed structures produced therefrom, and use and production thereof
Aromatic polyamide compositions with improved electrostatic properties, formed structures produced therefrom, and use and production thereof.Described are compositions comprising an aromatic...
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5545833 |
Phosphorus-containing polymers and fibers formed therefrom
A polymer including as integral parts of polymer chain, amide groups of the formula ##STR1## and phosphinic acid-salt groups of the formula ##STR2## wherein a and b are both greater than or equal...
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5530090 |
Reductive method for preparation of macrocyclic oligomer mixtures
Macrocyclic oligomer mixtures, particularly polyimide oligomer mixtures, are prepared by the treatment of a dihalo-substituted organic compound or the like under reducing conditions, preferably by...
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5438114 |
Method for converting macrocyclic polyimide oligomers to linear polyimides
Macrocyclic polyimide oligomers are converted to linear polyimides by heating with a primary amine in the presence of a tertiary amine, tertiary phosphine, quaternary ammonium salt, quaternary...
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5421982 |
Electrically conductive polymer gel and the method for manufacturing the same and an organism-use electrode with the use thereof
An electrically conductive polymer gel is composed of a crosslinked polyacrylamide polymer including an electrolytic salt, water and a polyhydric alcohol uniformly dissolved therein, wherein the...
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5380818 |
High modulus aromatic polyamide film and production thereof
A novel aromatic diamino amide monomer of the structural formula (I), a novel aromatic polyamide of the structural formula (II) prepared by polycondensation of the monomer and an aromatic diacid...
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5362845 |
Method for converting macrocyclic polyimide oligomers to linear polyimides
Macrocyclic polyimide oligomers are prepared by the reaction of at least one diamine with at least one tetracarboxylic acid or dianhydride thereof in equimolar amounts, under conditions of high...
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5357029 |
Macrocyclic polyimide oligomers and method for their preparation
Macrocyclic polyimide oligomers are prepared by the reaction of at least one diamine with at least one tetracarboxylic acid or dianhydride thereof in equimolar amounts, under conditions of high...
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5266679 |
Method for producing polyamide-imides from CO, bis-imide and polyamine
A method for preparing a polymer including the step of reacting carbon monoxide and a reactant pair having respective general formulas ##STR1## a reactant having the general formula ##STR2## in the...
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5266678 |
Method for preparing polyamide-imides from (O, imide and polyamine
A method for preparing a polymer including the step of reacting carbon monoxide and a reactant pair having respective general formulas ##STR1## and or a reactant having the general formula ##STR2##...
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5245004 |
Anhydrous polymerization of caprolactam with catalyst, cocatalyst and activator
A process for forming an ultra-high molecular weight nylon 6 by polymerizing ε-caprolactam, which comprises heating substantially anhydrous ε-caprolactam at a temperature of from 100° to 200° C. ...
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5214123 |
Preparation of aromatic poly(imide-amide)s from CO, primary diamine and di(trifluoro methane sulfonate) containing phthalimide group
A method for preparing poly(imide-amide)s comprising reacting carbon monoxide, an aromatic or heteroaromatic diamine, and an aromatic or heteroaromatic di(trifluoromethane sulfonate), in the...
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5200498 |
Lactam-lactone copolymer
Lactam-lactone copolymers are provided that range in properties from plastic to elastomer which are formed by reacting components of a polymerizable composition comprising: a lactam monomer; a...
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5128125 |
Method for preparing finely divided nylon-4 complex with iodine and antiseptic preparation made therefrom
Finely divided nylon-4 particles are prepared from a solution of polypyrrolidone in 2-pyrrolidone by precipitation in water. The washed particles are contacted with iodine to provide a water...
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4987215 |
Wholly aromatic polyamide, process for preparing same and structure thereof.
Aromatic copolyamides, soluble in organic polyamide solvents, comprise at least 95 mol % of the recurrent structural units of the formulae ##STR1## and up to 5 mol % of structural units containing...
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4970289 |
Imide-based prepolymer and varnish prepolymers with radical scavenger
There is provided the process for producing an imide-based prepolymer having high solvent solubility by reacting an unsaturated bisimide of formula (I): ##STR1## wherein D is a divalent group...
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4966961 |
Polymaleimide from polyarylene polyamine and process for the preparation thereof
The present invention relates to polymaleimide compounds having the following chemical structure: ##STR1## wherein n represents an integer of from 0 to about 50 and to a process for preparing the...
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4942220 |
Process for preparing poly-amide from nitrile and amine with catalytic complex
Polyamides are prepared from a carbonitrile and an amine by reacting by heating a mixture of a carbonitrile which is a dinitrile, an equivalent amount of a primary or secondary amine which is a...
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4861861 |
Saturated polyesters containing imide groups and terminal carboxyl groups
Saturated polyesters containing terminal carboxyl groups and, per molecule, at least one side chain, containing imide groups, of the formula I ##STR1## in which R1 and R2, for example, together...
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4777236 |
Thermosetting mixture containing di- or polycyanate compound and substituted bicyclo(2.2.1)hept-5-ene-2,3-dicarboxylic acid imide
Thermosetting mixtures which contain (a) 10 to 90% by weight of at least one aromatic di- or polycyanate compound or a prepolymer thereof, (b) 90 to 10% by weight of at least one compound of the...
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4751282 |
Star block polyol lactam copolymer and process for the production thereof
A novel star block copolymer represented by the general formula as shown below and a process for the production thereof are described. The copolymer has superior physical properties, particularly...
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4749776 |
Process for the manufacture of polyamide from dinitrile and diamine in contact with an ester of an oxygenated phosphorus compound catalyst and a strong base
The process for manufacturing a nylon-type polyamide from a dinitrile, a diamine and water in the presence of a catalyst is improved by using as a catalyst an ester of oxygenated phosphorus...
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4749760 |
Curable resin compositions
This invention relates to a curable resin composition comprising (a) a component selected from the group consisting of a dicyanate-terminated aromatic polysulfone oligomer, a dicyanate-terminated...
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4725666 |
Process for the manufacture of polyamide from diamine and dinitrile utilizing (1) copper containing compound and (2) oxygen containing compound of phosphorus or sulfur as catalyst mixture
Polyamides are produced from diamines, dinitriles, and water in contact with a two-component catalyst system comprising (1) at least one copper containing compound and (2) at least one oxygen...
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