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6410680 |
Dendrimer constructs and metal complexes thereof having superoxide dismutase activity
A metal-dendrimer complex in which the metal active site is deep within the three-dimensional dendrimer construct, has superoxide dismutase-like activity. In particular embodiments the complex is a...
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6403757 |
Modified polyamide resin and heat-resistant composition containing the same
A reaction between epoxy-terminated polyamide and an acid anhydride compound can yield a modified polyamide resin, into resin skeleton of which carboxy groups to react with epoxy resin are...
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6399741 |
Color-stable polyalkyleneimine derivatives, fiberglass lubricants containing the same and processes for producing the same
Polymer derivatives based upon polyalkyleneimine backbones having a color stabilizing-effective amount of their reactive amino functionalities substituted by either a carboxylic acid or an...
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6395867 |
Polymers with thiol terminal function
A polymer chosen from hyperbranched polymers and dendrimers containing at least one functional group of formula (I): in which: Y is chosen from an oxygen atom and an NH group; A is chosen from...
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6392006 |
Condensation polymer containing hydroxyalkylamide groups
The invention relates to a linear or branched polymer containing ester groups and at least one amidegroup in the backbone, having hydroxyalkylamide end groups and having a weight average molecular...
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6392007 |
Multi-pixel liquid streams, especially fiber-forming polymeric streams, and methods and apparatus for forming same
At least two different liquid streams are sub-divided into a dense plurality of individually separated parallel pixels oriented in respective misregistered arrays. Therefore, an individual pixel of...
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6384181 |
Method of production polyamide resin wherein carboxylic acid-activator and/or inorganic salt is present in reaction system therefor
A method of producing a polyamide resin by reacting with at least one diamine compounds at least one linear polyester resin consisting of at least one dicarboxylic acid component and at least one...
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6372939 |
Production of 6-aminocaproic acid
A process for making 6-aminocaproic acid by hydroformylating 3-pentenenitrile to produce 3-, 4-, and 5-formylvaleronitrile (FVN mixture), oxidizing the FVN mixture to produce 3-, 4-, and...
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6372880 |
Copolymer and process for preparing the same
A copolymer having a weight-average molecular weight of 1,000 to 100,000 which comprises, as repeating structure units, both of a succinimide unit represented by the structural formula (1) and a...
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6362307 |
Method for producing polyamides from amino carboxylic acid compounds
Polyamides are produced by reacting aminocarboxylic acid compounds of the general formula I H 2 N—(CH 2 ) m —COR 1 (I) where R 1 is OH, O—C 1-12 -alkyl or NR 2 R 3 , where R 2 and R 3 ...
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6359020 |
Method for producing polyamides from aminonitriles
Aqueous monomer and oligomer extracts obtained from polyamide production by extraction of the polymer with water are used for producing polyamides by direct reaction with aminonitriles.
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6358373 |
Production of polyamides by reactive distillation
The preparation of polyamides, their oligomers or mixtures thereof, where appropriate with other reaction products, takes place by reacting amino nitrites (A) and, where appropriate, other...
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6355737 |
Method for producing polymer mixtures comprised of amino nitriles and thermoplastic polymers
The process for producing polymer blends by reacting at least one aminonitrile with water in the presence of thermoplastic polymers and optionally further polyamide-forming monomers comprises the...
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6355769 |
Partially aromatic polyamides and a process for making them
A process for making partially aromatic polyamides is provided in which an aromatic dicarboxylic acid component, at least 20-100% by weight of the dicarboxylic acid in the acid component is in the...
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6355770 |
Scuff and bloom resistant polyamide resin compositions
Compositions comprising: (a) from about 51% to about 99.9% by weight of a polyamide resin component; and (b) from about 0. 1% to about 49% by weight of a wax component, wherein the polyamide resin...
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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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6353084 |
Biodegradable polyestreramide and a process of preparing
Biodegradable polyesteramides as defined in the specification are obtained by reacting a mixture consisting essentially of a 1 ) a mixture consisting essentially of 35 to 95 mol % of adipic acid...
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6348563 |
p-hydroxybenzoic esters, plasticizer containing the same, polyamide resin composition and molded articles
The present invention provides a p-hydroxybenzoic ester represented by the formula (1) wherein R 1 represents a C 6 -C 10 straight-chain or branched-chain alkyl group, A 1 represents a C 2 -C...
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6348562 |
Synthetic polyamides
A process of increasing the melt processing of synthetic polyamides, in particular pigmented and/or filled synthetic polyamide, by adding thereto an additive having the formula (I) wherein R 1 ...
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6344535 |
Polyether ester amides
Polyether ester amides having high water vapor permeability are disclosed. The amides which are prepared simply and reliably, crystallize quickly, are biodegradable and/or compostable, and are...
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6340739 |
Polyamide and process for producing the same
A polyamide having repeating units represented by formula (1), wherein R 1 represents a divalent hydrocarbon residue optionally having in the structure a heteroatom having no active hydrogen. The...
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6331607 |
Method for producing glucoprotamines
A process for producing glucoprotamines by condensation of N-substituted propylene diamines with 2-aminoglutaric compounds in which the reaction is carried out in the presence of aminosilicones is...
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6329494 |
Photosensitive resin composition
A 6,6'-dialkyl-3,3'4,4'-biphenyltetracarboxylic dianhydride is prepared by brominating a 4-alkylphthalic anhydride at its 5-position, and coupling the bromination product in the presence of a...
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6326457 |
Continuous polyamide extraction process
A process for continuous extraction of polyamide particles using a recirculating extractant in a vertical extraction column that is divided into two zones comprises treating the polyamide with an...
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6326511 |
Polymeric product
Methods are disclosed for preparing partial and complete esters of poly-γ-glutamic acid, and of the cross-linking of such esters by light of predetermined wavelength. The final products of the...
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6323301 |
High performance UV and heat crosslinked or chain extended polymers
Disclosed is a composition comprising a polymer with a weight average molecular weight of from about 1,000 to about 100,000, said polymer containing at least some monomer repeat units with a first,...
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6320021 |
Continuous polyamide extraction process
A process for continuous extraction of polyamide particles in an essentially vertical extraction column using an aqueous extractant comprises using an extraction column that is divided into two...
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6320018 |
Supramolecular polymer
A polymer comprising monomeric units linked via 4 H-bridges and bound within said polymer via a different bond. The bond via the H-bridges is much stronger than with known supramolecular polymers.
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6316588 |
Continuous preparation of polyamides from aminonitriles
A continuous process for preparing a polyamide by reacting at least one aminonitrile with water comprises: (1) reacting at least one aminonitrile with water at a temperature from 90 to 400° C....
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6316587 |
Polyamide composition including metal salt
The present invention provides a polyamide composition comprising: a polyamide containing an alkylene oxide group; and a metal salt. The polyamide composition of the present invention has long...
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6313258 |
Aromatic polycarbodiimide and films thereof
An aromatic polycarbodiimide having a specified structural unit is disclosed. The aromatic polycarbodiimide can give films, moldings, adhesives and the like each having excellent characteristics...
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6313260 |
Copolymeric, hydrophobically modified polyaspartic esters having increased molecular mass and their use
A high molecular weight copolymeric polyaspartic ester which has been hydrophobically modified with alkyl or alkenyl radicals having from 6 to 30 carbon atoms. The copolymers are derived from...
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6310173 |
Batch process for producing polyamides from aminonitriles
The batch process for producing a polyamide by reaction of a mixture comprising at least one aminonitrile, and optionally monomers useful for polyamide production, with water, comprises the...
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6307007 |
Polycondensation products and their use as dyeing aids
New water-soluble polycondensation products are obtained by reaction of polyfunctional amines with cyanamide, its derivatives or polymers in the presence of sulfamic acid. They are excellent fixing...
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6303741 |
Solid phase-polymerized polyamide polymer
A solid phase-polymerized polyamide produced by solid phase polymerization of a melt-polymerized polyamide which has a specific relative viscosity and end group balance and is obtained by...
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6300463 |
Thermoplastic elastomers
Thermoplastic elastomeric polymers which contain polyether blocks having tetramethylene ether repeat units, and polyamide blocks, have improved elastomeric properties such as higher unload power...
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6297345 |
Polyamide having excellent stretching properties
A polyamide with excellent stretching properties is disclosed, which comprises 50 to 99.8 mol % of a unit derived from a lactam and/or an aminocarboxylic acid, 0.1 to 25 mol % of a unit derived...
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6297349 |
Condensation copolymers having supressed crystallinity
Condensation copolymers are disclosed which are polymerized from a first monomer which is capable of polymerization by condensation polymerization, e.g., ring opening lactone polymerization, and a...
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6294644 |
Nylon 12, nylon composition, method for producing nylon 12, and tubular molded product using nylon 12
Disclosed is a member of nylon 12 having a relative viscosity of from 1.9 to 3.5 when measured in 98% sulfuric acid at a concentration of 10 g/dm 3 and at 25° C. and a melt flow rate of 0.1 g/10...
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6291633 |
Polyamide resin compositions with excellent weld strength
A molding polyamide resin composition with excellent weld strength is disclosed which comprises: 100 parts by weight of a polyamide resin comprising from 95 to 55 wt % crystalline, partly aromatic...
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6288208 |
Highly branched oligomers, process for their preparation and applications thereof
The present invention relates to a highly branched polyamide oligomer of the general formula (I) as hereinabove defined, to the process for preparing and branched oligomers and to different uses...
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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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6277948 |
Process and product for making polyamides
Disclosed in the present invention is a process for modifying a polyamide polymer comprising contacting a reactive modifier with diamine/diacid salt and/or an amino-acid of a hydrolyzed lactam or...
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6277949 |
Coating compositions
The invention provides a coating composition for building use, which contains a base polyamide resin coating and charcoal powder. The base polyamide resin coating contains a copolymeric nyron and a...
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6274695 |
Aligning agent for liquid crystal
The present invention relates to a treating agent for liquid crystal alignment, which is an agent for liquid crystal alignment to be used for a method in which polarized ultraviolet rays or...
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6271339 |
Prepolymers having maleimide functions the process for preparing them and their uses
These prepolymers having maleimide functions (f) consist in the reaction products of at least one maleic anhydride represented by formula (I); of at least one compound (II) having at least one --NH...
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6271335 |
Method of making thermally removable polymeric encapsulants
A method of making a thermally-removable encapsulant by heating a mixture of at least one bis(maleimide) compound and at least one monomeric tris(furan) or tetrakis(furan) compound at temperatures...
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6268465 |
Hydrolysis-resistant aliphatic polyester amides, their production and use
An aliphatic polyester amide which is hydrolysis-resistant includes a ternary polycondensation product of monomeric constituents composed of a monomeric constituent A which is at least one diol...
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6265529 |
Antistatic monomer cast nylon
Disclosed is an antistatic monomer-cast nylon (MC nylon) polymer. The MC nylon polymer includes graphite particles nonuniformly distributed in an MC nylon polymer structure. The graphite particles...
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6262221 |
Polyamide resin composition
An improved polyamide resin composition for weldable molded articles which comprises: (a) 99.9-30% by weight of a polyamide-containing compound; (b) 0.1-20% by weight of a plasticizing...
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