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7572878 |
Polycyclic polyimides and compositions and methods relating thereto
The present invention is directed to the use polycyclic diamines. These diamines, when polymerized with dianhydrides, and optionally other non-polycyclic diamines are used to form new polyamic...
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7416822 |
Resin and resin composition
Disclosed is a hydroxy polyamide represented by the following general formula (1) and having a 5-amino isophthalic acid derivative structure in the main chain structure. (1) (In the formula, m and...
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7101652 |
Photosensitive resin compositions
New photosensitive PBO precursor polymers which contain diazoquinone moieties attached to its backbone and in which all amino end groups are converted into amide groups. The photosensitive...
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7053169 |
Polyamide molding compounds for producing optical lenses
The invention relates to new thermoplastically processible transparent polyamide molding materials based on copolyamides containing diamines and dicarboxylic acids with aromatic cores which exhibit...
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6995233 |
Process for manufacturing polyamides
The invention relates to a continuous process for manufacturing polyamides. The polyamides are of the type obtained from diacids and diamines. The process comprises an operation of continuous...
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6943231 |
Transparent polyamide molding materials having improved transparency, resistance to chemicals and high permanent fatigue strength
Transparent polyamide molding materials are provided which are characterized in that they have a melting enthalpy between 0 and 12 J/g and the polyamides are constituted of 100 mole-% of a diamine...
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6911501 |
Process for preparing aspartates
The present invention relates to novel aspartates, their method of production and the use of these aspartates as reactive components for polyisocyanates in two-component polyurethane coating...
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6881820 |
Rod-coil block polyimide copolymers
This invention is a series of rod-coil block polyimide copolymers that are easy to fabricate into mechanically resilient films with acceptable ionic or protonic conductivity at a variety of...
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6855433 |
Mechanically resilient polymeric films doped with a lithium compound
This invention is a series of mechanically resilient polymeric films, comprising rod-coil block polyimide copolymers, which are doped with a lithium compound providing lithium ion conductivity,...
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6841652 |
Space environmentally durable polyimides and copolyimides
Polyimides displaying low color in thin films, atomic oxygen resistance, vacuum ultraviolet radiation resistance, solubility in organic solvents in the imide form, high glass transition (T g )...
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6774205 |
Polyamides
A process for the preparation of novel polyamides, the use of such polyamides for the production of fibers, sheets and moldings, and fibers, sheets and moldings obtainable from such polyamides, are...
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6750317 |
Material and additive for highly crosslinked chemically and thermally stable polyhydroxyamide polymers
Polyhydroxyamides are polymerized to form highly-crosslinked, temperature-stable polymers. The polyhydroxyamides include as their central, parent structure a benzenetricarboxylic acid to which side...
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6747120 |
Copolyamide based on tetramethylene terephthalamide and hexamethylene terephthalamide
The invention relates to a semi-aromatic polyamide containing at least tetramethylene terephthalamide units and also hexamethylene terephthalamide units. The copolyamide has a melting point higher...
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6710121 |
Nitrocellulose-compatible laminating ink resins
Nitrocellulose-compatible laminating ink resin is prepared by reacting together reactants including polymerized fatty acid, co-diacid, monoacid, secondary diamine and C 6 diamine, or reactive...
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6670442 |
Hot melt adhesives based on polyamides
Hot melt adhesives are prepared using thermoplastic polyamides derived from polymerized fatty acid components. The adhesives are particularly useful for bonding nonpolar substrates such as...
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6610816 |
Process for production of polyamide
In the production of polyamide by the melt-polymerization of the present invention, the polymerization conditions are rapidly and accurately controlled by a near-infrared spectroscopy to enable the...
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6596701 |
S-adenosyl methionine regulation of metabolic pathways and its use in diagnosis and therapy
A new paradigm of disease centers around the metabolic pathways of S-adenosyl-L-methionine (SAM), the intermediates of these pathways and other metabolic pathways influenced by the SAM pathways....
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6590063 |
Low-melting copolyamide and their use as hot-melt adhesives
Copolyamides, consisting of polycondensation products of the following components: caprolactam 10 to 45 mol-%, laurolactam 30 to 55 mol-%, at least 2 dicarboxylic acids 20 to 50 mol-% of the...
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6451381 |
Electrically insulating crosslinked thin-film-forming organic resin composition and method for forming thin film therefrom
An electrically insulating crosslinked thin-film-forming organic resin composition comprising (A) an electrically insulating organic resin having silicon atom-bonded hydrogen atoms or silicon...
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6441072 |
High-melting polyamide composition for electronic applications
The invention relates to a polyamide composition for the production of electrical and electronic components that are suitable for the conditions of the surface mounting technology. In particular,...
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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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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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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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6204355 |
Use of polyamide moulding compounds for manufacturing optical or electro-optical moulded members
The invention relates to the use of polyamide moulding compounds, their alloys or blends, which contain at least one homopolyamide, which has been obtained from long-chained aliphatic monomer...
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6140459 |
Semi-crystalline, semi-aromatic copolymers with superior post-molding shrinkage and balance of mechanical performance
This invention relates to high temperature, semi-crystalline, semi-aromatic nylon copolymers with improved shrinkage and blistering resistance, made from terephthalic acid (TA), hexamethylene...
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6075082 |
Cross-linked polymide binders for ceramics manufacture
A method for binding ceramic materials in aqueous media is disclosed. The method utilizes water-soluble cross-linked polyamides prepared by condensation polymerization for binding various classes...
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6013758 |
Method for producing a liquid system for lactam polymerization
A method for the production and use of a catalytically-acting liquid system is offered, which has no or only a small proportion of free lactam, and which is of low viscosity and good storage...
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6011134 |
Method for manufacturing poly(hexamethylene adipamide) from monomethyladipate and hexamethylenediamine
An improved method for manufacturing poly(hexamethylene adipamide), i.e. nylon 6,6, by reacting monomethyl adipate with hexamethylenediamine in an approximately equimolar ratio in the presence of...
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5990270 |
Amorphous, transparent polyamide compositions and articles having reduced flammability
A polyamide composition which is amorphous and transparent, which has reduced flammability, and which has reduced migration of flame-retardant additive so that it is film-free, includes at least...
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5981692 |
Semi-crystalline, semi-aromatic terpolymers with superior post-molding shrinkage and balance of mechanical performance
This invention relates to high temperature, semi-crystalline, semi-aromatic nylon terpolymers with improved shrinkage resistance, made from terephthalic acid (TA), hexamethylene diamine (HMD)...
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5973202 |
Preparation of poly-o-hydroxyamides and poly o-mercaptoamides
In a process for the preparation of poly-o-hydroxyamides and poly-o-mercaptoamides, a bis-o-aminophenol or a bis-o-aminothiophenol is reacted with a dicarboxylic acid derivative of the following...
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5962627 |
Optically anisotropic spinning solution comprising a mixture of P-aramid and aliphatic polyamide, and fibers to be made therefrom
It has been found that fibers which incorporate very good mechanical properties as well as very good adhesive properties can be made from an optically anisotropic spinning solution containing a...
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5959069 |
H-shaped polyamides
Polyamides are built up from, as fundamental building blocks (a), lactams or aminocarboxylic acids or mixtures of these, as fundamental building blocks (b), from 1 to 50 μmol of at least...
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5955528 |
Polymeric composite material and process for manufacturing the same
Disclosed is a polymeric composite material in which metal sulfide microparticles having optical characteristics are uniformly dispersed and suspended in a high polymer material at high...
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5948880 |
Aqueous dispersions of polyamides
A process is provided for preparing a dispersion of a polyamide in water, said process comprising: forming a solution of a polyamide having an acid value of greater than about 2 in an organic...
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5922801 |
Polyamide binders for ceramics manufacture
A method for binding ceramic materials in aqueous media is disclosed. The method utilizes water-soluble polyamides prepared by condensation polymerization for binding various classes of ceramic...
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5916996 |
Polyester-imide toner and developer compositions
A process for the preparation of polyester-imide resin of the formula ##STR1## wherein n represents the number of segments present and is a number of from about 10 to about 10,000; R' is alkyl or...
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5895808 |
Process for producing compound materials with a polylactam matrix which can be thermally postformed
A process for producing composite materials which can be thermally postformed, with a matrix of polylactam produced by means of activated anionic polymerization is offered.
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5891987 |
Copolyamide composition with a high glass transition temperature
A copolyamide composition prepared from hexamethylene diamine and either mixtures of adipic acid and terephthalic acid, or mixtures of adipic acid, terephthalic acid and isophthalic acid, has a...
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5869596 |
Fibers comprising water soluble polyamides and articles constructed therefrom
This invention relates to a nonwoven web and fibers comprising a water soluble polyamide and articles constructed therefrom. The water soluble polyamide may be used alone or in combination with...
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5866675 |
Nonwoven web comprising water soluble polyamides and articles constructed therefrom
This invention relates to a nonwoven web comprising a water soluble polyamide and articles constructed therefrom. The water soluble polyamide may be used alone or in combination with conventional...
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5863979 |
Paper making method employing novel beater bag with water dispersable hot melt sealed closure
A method of making paper in which dry chemical additives are incorporated into the pulp mixture by addition of an entire bag containing the additive directly to the mixture, the improvement being...
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5854379 |
Thermal decomposition degreasing method and molded products thereof
A low-cost thermal decomposition degreasing method capable of drastically reducing the time required for a degreasing process which involves heating, vaporization and thermal decomposition, while...
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5849826 |
Semiaromatic polyamides, processes for preparing the same and compositions containing the same
The semiaromatic polyamide of the invention comprises 40 to 90% by mol of (A) recurring units derived from terephthalic acid and an aliphatic diamine of 4 to 12 carbon atoms, 0 to 50% by mol of (B)...
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5807968 |
Polyamide compositions and related methods
A polyamide resin comprising the reaction product obtained by the reaction of an acid component comprised of a major concentration of a dimer acid and minor concentration of a monobasic acid and an...
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5763561 |
Polyamide compositions having improved thermal stability
Improved high temperature polyamides, and particularly partially aromatic polyamides, containing less than about 40 μeq/g carboxylic acid endgroups, when stabilized with a copper-containing...
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5756647 |
Process for activated anionic lactam polymerization
A process for the activated anionic lactam polymerization is proposed, wherein a liquid system is employed, which simultaneously contains activator and anionic catalyst for the polymerization of...
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5750639 |
Polyamide resin composition and molding thereof
A polyamide resin composition having good molding fluidity, heat and chemical resistance and dimensional stability is provided containing: (A) 30-90 weight percent, based on components (A) and (B),...
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5739262 |
Ternary copolyamide
This invention relates to a novel ternary polyamide for the production of monofilaments, films and injection moulded articles.
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5728800 |
Thermoplastic polyamide molding materials
Thermoplastic molding materials contain A) from 5 to 94% by weight of a partly aromatic, semicrystalline copolyamide composed essentially of a 1 ) from 30 to 44 mol % of units which are...
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