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5168011 |
Interpenetrated polymer fibers
This invention relates in general to the formation of fibers having a controlled molecular orientation prepared from rod-like extended chain aromatic-heterocyclic ordered polymers, and containing a...
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5166278 |
Process for modifying polyamide dyeability using co-fed polyamide flake
A process for modifying the dyeability of polyamide polymers is disclosed, the process involving the addition of co-fed polyamide flake of the same type of polyamide as the base polyamide with the...
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5166246 |
Polyetherimide-polyamide compositions
Polyphenylene ether- polyamide compositions having improved resistance to water absorption and swell are provided by incorporating therein a phenolic compound.
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5166309 |
Block polyetheramides
Novel block polyetheramides, well adapted for the usual thermoplastic elastomer applications, e.g., as molded or extruded shaped articles, films, sheaths, composites and the like, have the...
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5164475 |
Porous substrates with a high concentration of amine groups
The invention relates to a polyamide substrate with a high concentration of amine groups, and a method of transferring biological materials by adsorption onto said substrate.
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5162454 |
Polyamide-polyimide block copolymers
Polyamide-polyimide block copolymers having an average molecular weight M n of 1,000-50,000 and containing recurring units of the formula I --(PA)-(PI)--. ...
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5157085 |
Polyimide resin composition
This invention relates to molding resin compositions, and more particularly relates to polyimide resin compositions having markedly improved molding ability in addition to excellent high...
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5155179 |
Miscible blends of polyimide polymers
Novel polyimide blends are formed of polyimide polymers each having moieties derived from dianhydride and diamine comonomers. The miscible blends of the present invention may be formed by selecting...
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5155178 |
Antistain block copolymer compositions of modified nylon copolymers and high carbon nylons
Blends of nylon 6,6, nylon 6 or nylon 6,6/6 copolymer which contain a randomly copolymerized cationic dye modifier are formed by melt blending such copolymer with a polyamide having 8 to 22 carbon...
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5153275 |
Polyamide compositions comprising poly(amide-ether) block copolymers featuring improved impact strength and improved film properties
Nylon compositions useful for molding and film applications with film properties and impact strength are made of a polyamide resin and a block copolymer of poly(amide-ether) of the formula ##STR1##...
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5151472 |
Method of preparing rigid rod polymers in thermoplastic matrices
A high strength synthetic resin based structural material in which a polymer having coil-like molecules is uniformly mixed with a second polymer having rigid rod-like molecules. This material is...
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5149746 |
Semi-interpenetrating polymer network for tougher and more microcracking resistant high temperature polymers
This invention is a process for making a semi-interpenetrating polymer network which includes a high performance thermosetting polyimide having a nadic end group acting as a crosslinking site and a...
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5147944 |
Polyamide resin, and polyamide resin compositions
A polyamide resin which comprises a molten reaction mixture composed of 10-90% by weight of a polyamide (A1) from xylylenediamine and a C 6 -C 20 α,β-linear aliphatic dibasic acid and 90-10% by...
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5143983 |
Heat resistant polyamide film
A heat resistant polyamide film which is obtained by melt-extruding into a sheet a polyamide composition of a mixture of a preformed polyamide (A) composed of diaminobutane and adipic acid and a...
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5139821 |
Powder coating resin composition
A polyamide resin composition is used in powder coating and comprises a first polyamide having a carboxylic acid at 70 percent or above of the terminal groups thereof and a second polyamide having...
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5137985 |
Miscible blends of polybenzimidazoles and polyamide-imides having fluorine-containing linking groups and process for preparation of the blends
A miscible blend comprising from about 5 to about 95 weight percent of a polybenzimidazole and from about 95 to about 5 weight percent of a polyamide-imide having fluorine-containing linking...
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5137986 |
Spinnable dopes and articles therefrom
As-spun fibers from certain spinnable dopes of poly-p-phenylenebenzobisthiazole, poly-p-phenylenebenzobisoxazole, or poly-2,5-benzoxazole and thermoplastic polymers in certain mixed solvents are...
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5137688 |
Irradiated articles molded from polycarbonate-polyamide blends
Thermoplastic articles molded from amorphous polyamide and polycarbonate resin blends exhibit improved color when irradiated with ionizing radiation.
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5135991 |
Process for producing polymer powder from molten mixture of polyamides
A polymer powder is produced by separately melting two or more of polymers and monomers which are reactive with each other, spraying a mixture of the polymers and the monomers, while continuously...
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5118765 |
Soluble and/or fusible polyamidoimide-polyimide block copolymers
Soluble and/or fusible polyamidoimide-polyimide block copolymers with high heat stability, useful e.g. as molding powders for thermoplastic shaping films, fibers and laminates and process for their...
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5116939 |
Polyimide processing additives
A process for preparing polyimides having enhanced melt flow properties is described. The process consists of heating a mixture of a high molecular weight poly(amic acid) or polyimide with a low...
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5116920 |
Polyamide-polyimide block copolymers soluble in aprotic dipolar solvents
Novel soluble polyamide-polyimide block copolymers having an average molecular weight M n of 1,000-50,000 and containing radicals of the formula ##STR1## in the polyimide blocks are described. The...
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5116945 |
Resinous substance
A resinous substance obtained by reacting a rosin compound containing 1 to 10 equivalents of carboxylic groups per kilogram with triglycidyl isocyanurate. A process for producing it is also disclosed.
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5110879 |
Miscible blends of polyimide polymers and process for forming the same
Novel polyimide blends are formed of polyimide polymers each having moieties derived from dianhydride and diamine comonomers. The blends of the present invention may be formed by selecting...
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5106915 |
Flame resistant polyetherimide resin blends
Flame resistant polymer blends contain a polyetherimide and an impact strength-enhancing amount of a siloxane-polyetherimide copolymer. These blends exhibit high impact strengths, good...
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5106910 |
High concentration acid resistant coatings
Improved polyamide-based compositions are provided which are particularly formulated for plasma-spray application to surfaces subjected to acidic conditions. The compositions include respective...
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5102959 |
Auto-photocrosslinkable copolyimides and polyimide compositions
The present invention relates to copolyimides of 100-70 mol % of recurring structural units of the formula I and 0-30 mol % of recurring structural units of the formula II ##STR1## in which z a is...
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5095075 |
Thermoset rigid rod molecular composite system
Provided is a molecular composite comprising a rigid-rod aromatic heterocyclic polymer, a flexible, coil-like thermoplastic polymer and a thermosetting polymer. Also provided is a method for...
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5093435 |
Molded electrical device and composition therefore
This invention is directed to a molded electrical device comprising an electrically conductive pathway and an insulating material, and capable of interconnecting with external circuitry said...
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5086120 |
Ionically blended molecular composites
A molecular composite system consisting essentially of a para-oriented benzobisazole polymer and a matrix polymer, poly(2-acrylamido-2-methylpropanesulfonic acid).
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5075168 |
Polyamide filament and process for producing the same
Disclosed herein are a polyamide filament comprising a polyamide resin composition which comprises an aromatic polyamide resin (A) produced by polymerizing a monomer containing not less than 85 wt...
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5075392 |
Thermoplastic compositions containing polybenzoxazole, polybenzothiazole and polybenzimidazole moieties
The present invention encompasses non-phase-separated thermoplastic block copolymers containing rigid rod PBZ blocks and thermoplastic PBZ blocks; dopes and compositions containing those block...
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5071924 |
Thermoplastic molding materials based on polyamide blends
Thermoplastic molding materials contain, as essential components, A) 20-98% by weight of a partly aromatic amide copolymer essentially consisting of a 1 ) 40-90% by weight of units derived...
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5070155 |
Semi-aromatic copolyamide or copolyester-amide prepared from aliphatic polyamide
Semi-aromatic copolyamides and copolyester-amides are obtained by placing an aliphatic polyamide into contact with an aromatic hydroxyacid or aminoacid, by operating at high temperature, under...
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5070156 |
Pulverulent polyamide mixture coating composition wherein the polyamide has as an average at least nine carbon atoms per carbonamide group
Pulverulent polyamide coating compositions consisting of a mixture of similar polyamides having on the average at least nine aliphatically bound carbon atoms per carbonamide group and of different...
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5068052 |
Resin composition containing smectic liquid crystal
A resin composition comprises a thermoplastic polymer and a smectic liquid crystal compound and is useful for fibers and film having been improved in mechanical properties.
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5047487 |
Compositions of poly(imides) having phenylindane diamines and/or dianhydride moieties in the poly(imide) backbone
This invention relates to novel compositions of a poly(imide) having phenylindane diamine and/or dianhydride moieties in the poly(imide) backbone and a polymeric component comprising: (a) a...
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5043400 |
Production of composite resins
A method for producing articles of composite resin, wherein a liquid crystal polymer material in powder form is mixed with a second, melt-processable polymer material; the resulting mixture is...
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5041506 |
Method for the production of a molecular composite of rigid aromatic polymer
A method for the production of a molecular composite of an aromatic polymer and matrix polymer suitable for use as structural materials for aircraft, automobiles and spacecraft using a solution of...
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5032633 |
Thermoplastic molding compositions with high cold impact strength
Thermoplastic molding compositions that contain (A) 10 to 90 parts by weight of polyamide 12, and 90 to 10 parts by weight of polyamide 10,12 and/or polyamide 12,12; and (B) 0 to 25 wt. % of...
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5030689 |
Thermoplastic molding compositions based on polyamide mixtures
Thermoplastic molding compositions contain as essential components (A) 10-89% by weight of a copolyamide of (A 1 ) 80-99% by weight of recurring units derived from adipic acid and...
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5026763 |
Polyamide molding materials
Polyamide molding materials having high heat distortion resistance for the production of blow-molded articles contain essentially two highly viscous polyamides which are homogeneously miscible with...
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5021517 |
Process for the fabrication of rodlike polymer reinforced molecular composites into shaped articles
A process for fabricating rod-like aromatic heterocyclic polymer-reinforced composite materials into shaped articles which comprises the steps of: (a) dissolving a rigid-rod aromatic...
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5013799 |
Polyetherimide-polyamide blends
Disclosed are blends comprising from about 40 to 70 wt. % of a polyetherimide and the remainder one or more polyamides. The blends generally have a tensile strength which is greater than the...
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5011893 |
Method for producing a block copolyamide
A method for producing a block copolyamide, which comprises polycondensing a prepolymer prepared from a dimerized fatty acid and a diamine and having a number average molecular weight of from 1,000...
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5004575 |
Preparing composite materials from matrices of processable aromatic polyimide thermoplastic blends
Composite materials with matrices of tough, thermoplastic aromatic polyimides are obtained by blending semi-crystalline polyimide powders with polyamic acid solutions to form slurries, which are...
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5003036 |
Yarn with improved hydrolytic stability from aromatic polyamide comprising chloroterephthalamide units
Aromatic polyamide fibers of high hydrolytic stability are disclosed. The polyamide is a copolymer including chloroterephthalamide or a blend of homopolymers including one with...
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5003018 |
Slurry mixing of bismaleimide resins
Bismaleimide-containing resin systems suitable for preparing structural adhesives and prepregs having superior tack and drape are disclosed. These resin systems, which have improved uniformity and...
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4996293 |
Composition comprising polyimide resin from diphenyl sulfone -3,3',4,4'-tetracarboxylic acid dianhydride
This invention provides: A. A polyimide resin composition which comprises at least one polyimide having a repeating unit of the general formula ##STR1## wherein Z is --S--, ##STR2## in which X...
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4996101 |
Processible polyimide blends
Semi-interpenetrating polymer networks having improved processibility and compatibility are prepared by combining a linear polymer comprised of a thermoplastic polyisoimide and a short chain...
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