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5326613 |
Tubular polyamide casing
The monolayered, biaxially stretch-oriented and heat-set tubular packaging casing, in particular synthetic sausage casing, is crystal-clear and exhibits high resilience. It is essentially composed...
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5326830 |
Process for preparing chain extended polymers and graft and block copolymers
The invention relates to a process for forming chain extended polymers and graft and block polymers and copolymers which comprises the steps of: (a) forming an intimate mixture of one or more...
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5322905 |
Stable blends of copolyetherimide ester thermoplastic elastomers and polyamides
Blends of copolyetherimide ester resin and amorphous or crystalline nylon provide thermoplastic elastomers having improved thermal aging performance. Optionally, various stabilizers, fillers and...
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5321099 |
Blends of semi-crystalline polyamides and polyesteramides
Blends of (1) a crystalline polyamide derived from 4,4'-diphenylmethane diisocyanate (MDI) and a dicarboxylic acid and (2) a segmented polyesteramide derived from (a) MDI, (b) a carboxylic...
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5319064 |
Thermotropic liquid crystalline poly(ester-amides)
Thermotropic liquid crystalline poly(ester-amide) compositions are disclosed which comprise a bis(4-carbonyl phenylene) terephthalate unit and a unit derived from an N-substituted...
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5312875 |
Process for the manufacture of in situ polymer alloys and microcompounds, and use thereof
A polymer mixture reinforced by an in situ, melt-polymerized microphase whereby the rigidity of the base material is increased, a process for manufacturing same, and use thereof for providing...
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5306784 |
Tough, processable semi-interpenetrating polymer networks from monomer reactants
A high temperature semi-interpenetrating polymer network (semi-IPN) was developed which had significantly improved processability, damage tolerance and mechanical performance, when compared to the...
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5300620 |
Heat-resistant adhesive and method of adhesion by using adhesive
The heat resistant adhesive of the invention comprises polyamic acid and/or polyimide which are prepared by using 1,3-bis(3-aminophenoxy)benzene as an aromatic diamine component and...
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5296558 |
Polymeric composition
A polymeric composition comprises: (i) an aromatic polyimide or an aromatic carboxylic ester polymer, (ii) a substantially wholly aliphatic polyamide, and (iii) a polyamide that contains...
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5290884 |
Blends of polybenzimidazoles and aromatic polyamides, aromatic polyamide-hydrazides or aromatic polyamides containing heterocyclic linkages
A novel miscible blend of component polymers comprised of from about 5 weight percent to about 95 weight percent of a polybenzimidazole and from about 95 weight percent to about 5 weight percent of...
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5290850 |
Processing of pigmented nylon fibers using modified polymers
An improved process for melt spinning a pigmented hexamethylene adipamide fiber from a melt blend of a polymer and a colored pigment wherein the polymer is a random interpolyamide or a block...
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5288842 |
Morphological composite materials formed from different precursors
A method of producing a multiphase polymer is disclosed whereby the phases have the same chemical structure but have different morphological states and thus different properties. This is achieved...
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5286838 |
Thermotropic liquid crystalline polyamide
Thermotropic liquid crystalline copolyamides comprise: (a) a thermoplastic, aliphatic polyamide, such as nylon-6,6; and (b) a mesogen comprising an amide-linked aromatic group segment which is not...
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5286811 |
Blended polyimide oligomers and method of curing polyimides
A preferred class of polyimide oligomers include (1) linear, difunctional crosslinking oligomers prepared by condensing an imidophenylamine end cap with a lower alkylene diamine or a...
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5284936 |
Polyamino acid superabsorbents
Substantially water-insoluble, crosslinked polypeptides containing 15 to 85 mole % of amino acid residues such as glutamic acid, aspartic acid, phosphoserine, phosphohomoserine, phosphotyrosine,...
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5281671 |
Abrasion-resistant rubber compositions
An abrasion-resistant rubber composition comprises as rubber components (A) 30-95 wt. % of an end-modified butadiene polymer and (B) 70-5 wt. % of a diene rubber other than the end-modified...
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5273823 |
Shaped articles containing copolymers of polybenzazoles
Granular compositions which comprise a block copolymer containing blocks of polybenzazole polymer and blocks of thermoplastic polymer can be compression molded to provide a molded article having...
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5270401 |
Plastics composition based on a thermoplastic blend of a polyamide and a polyester
Disclosed is a plastics composition comprising a thermoplastic blend comprising: (1) 5-95 wt % of a polyamide (PA) and 95-5 wt % of a polyester (PE) incorporating 1-50 wt % of an aliphatic dimer...
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5268219 |
Polyamide resin composition and film therefrom
A polyamide resin composition obtained by melting and kneading (A) a first polyamide containing not less than 90 mol %, based on the total recurring units, of a m-xylylene adipamide unit of the...
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5268519 |
Lightly crosslinked etherimide oligomers
Polyetherimide oligomers having crosslinking end cap moieties which provide improved solvent-resistance to cured composites are generally represented by the formula: ##STR1## wherein X=--O-- or...
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5266656 |
Molding materials based on homo- and copolyamides with olefinic double bonds
Molding materials are composed of A) from 40 to 100% by weight, based on the total weight of the molding material, of a polyamide mixture based on a 1 ) from 5 to 30% by weight, based on the...
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5266658 |
Forming preblend of flexible coil polymer and block copolymer of thermotropic liquid crystal polymer and flexible coil polymer
Preblends with improved interfacial adhesion, capable of later melt blending, can be formed by heating, above their glass transition temperatures but below their melting temperatures, a flexible...
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5266655 |
Single phase/amorphous blends of amorphous semiaromatic polyamides and semicrystalline nylon polyamides
Single-phase and amorphous polymer blends, well adapted for the production of resilient shaped articles, e.g., by molding, include (i) and amorphous semiaromatic polyamide homo- or copolymer, e.g.,...
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5264544 |
Amorphous polyamide composition from neopentyl diamine
Amorphous polyamide compositions are provided which are transparent and have improved glass transition and thermal decomposition temperatures. The polyamide compositions of the present invention...
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5264282 |
Polyamide filament, process for producing it and its use
The process for making a polyamide filament having thermal and mechanical properties close to those of nylon 66 but without spherulites includes concentrating an aqueous solution of adipic...
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RE34447 |
Crystalline polyamide composition from dicarboxylic acid mixture and diamine
Novel crystalline polyamides having high heat deflection temperatures when filled are prepared from aliphatic diamines and either mixtures of terephthalic acid and adipic acid or mixtures of...
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5258470 |
Molding compounds based on aromatic polyamides
An aromatic polyamide molding compound, comprising: I. an aromatic polyamide having the basic structure ##STR1## where Ar is an aromatic radical without amine-reactive functional groups n is a...
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5254361 |
Method for producing printed circuit boards
A method for producing circuit boards with a film having improved printing properties, adhesion, flexibility and heat resistance which comprises applying a liquid printing ink composition...
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5252647 |
Thermoplastic moulding materials based on polyphenylene ethers and polyamides
A thermoplastic moulding material is prepared by the admixture of a) 3 to 80 parts by weight of polyphenylene ethers, b) 20 to 97 parts by weight of polyamides, c) 0.1 to 10 parts by...
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5252661 |
Impact modifying rubber and partly aromatic copolyamides
Thermoplastic molding compositions contain as essential components A) 40-95% by weight of a partly aromatic copolyamide composed essentially of A 1 ) 20-90% by weight of units derived from...
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5250619 |
Process for the preparation of high molecular weight polyamides
This invention relates to a process for the preparation of particulate, high molecular weight polyamides, to the particulate, high molecular weight polyamides prepared by this process, to the use...
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5250633 |
Fibers and fibrets from blends of polybezimidazoles and aromatic polyamides, aromatic polyamide-hydrazides or aromatic polyamides containing heterocyclic linkages
Fibers and fibrets of a novel miscible blend of component polymers comprising from about 5 weight percent to about 95 weight percent of a polybenzimidazole and from about 95 weight percent to about...
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5250604 |
Glass fiber reinforced polyamide composition and the process for manufacturing the same
Polyamide composition having a high strength, high-rigidity and high impact characteristics with a smooth surface and improved in the decrease of physical properties by water absorption are made by...
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5248738 |
Vibration-damping resin molded products formed of a mixture of nylon 6 resin, a xylene diamine based nylon resin, and a nylon 66 resin
A vibration-damping resin molded product which can be used as an engine part or attachment in a motor vehicle, the resin molded product being made of a blend of nylons comprising: (A) 5 to 90%...
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5248711 |
Toughened resin systems for composite applications
Thermosetting resins for use in high performance fiber-reinforced composites are toughened without compromising their processability by the inclusion of micron-sized particles of thermoplastic...
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5244984 |
Process for producing polymer powder
A polymer powder is produced by separately melting two or more of oligomers and monomers which are reactive with each other, spraying a mixture of the oligomers and the monomers, while continuously...
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5243024 |
High moduli polyimides
Improved imide-containing copolymers comprising, in the aromatic diamine component, p-phenylene diamine and at least one additional aromatic diamine have increased rigidity and useful...
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5242992 |
Polyamide molding compound
1. A polyamide molding compound, comprised of: (I) an aromatic polyamide having the structure ##STR1## where n is a number between 5 and 500; X represents --SO 2 -- or --CO--, and Y...
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5225489 |
Composites of thermoplastic and thermoplastic polymers having therein short fibers derived from anisotropic polymers
This invention relates to mixtures of short fibers of varying lengths, diameters and aspect ratios composed of an anisotropic polymer, to compositions containing said fibers and one or more...
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5223588 |
In-situ composites
A composite material is comprised of an in situ polymerized rigid rod polymer and an in situ polymerized matrix polymer. The composite material is isotropic and has enhanced mechanical properties...
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5219953 |
Catalytic preparation of semi-aromatic copolyamides and copolyester-amides
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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5212258 |
Aramid block copolymers
Aramid block copolymers which contains blocks whose polymer chains are flexible, and blocks whose polymer chains are flexible in solution and in undrawn polymer, but relatively rigid in drawn...
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5206310 |
Polyamide resin composition
The invention relates to a polyamide resin composition comprising (A) nylon 4.6, (B) an aliphatic polyamide having a CH 2 /NHCO ratio of from 6 to 11 and (C) a non-crystalline polyamide...
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5206309 |
Heat stable film composition comprising polyepsiloncaprolactam
The present invention provides a heat stable film composition comprising polyepsiloncaprolactam and poly(epsiloncaprolactam-hexamethylene adipamide) copolymer which finds particular use in...
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5202412 |
Polyimide copolymer precursors
Soluble polymeric precursors having oligomeric imide and amic acid segments, which are suitable to form segmented, preferably insoluble, polyimide copolymers.
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5198507 |
Synthesis of amino acid-derived bioerodible polymers
Novel amino acid-derived polycarbonates and amino acid-derived diphenol compound starting materials from which the polycarbonates are polymerized. Polymer blends of the amino acid-derived...
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5183864 |
Polyamide blends by reactive processing
Disclosed is a process for the preparation of a thermoplastic polymer blend comprising a first preformed thermoplastic polymer such as a polyester, polycarbonate, ABS graft polymer and the like and...
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5179175 |
Polyamides from polyetheramines, hexamethylene diamine and adipic acid
Disclosed is a method for reducing compatibility problems when introducing a polyetheramine having a molecular weight of about 100 to 1000 into a nylon-6,6 polymer by prereacting the polyetheramine...
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5171828 |
Copolyimide ODPA/BPDA/4,4'-ODA or P-PDA
Polyimide copolymers are disclosed having the recurring structure ##STR1## wherein AR is AR 1 or AR 2 , wherein AR 1 is ##STR2## and wherein AR 2 is ##STR3## provided that the molar ratio of AR...
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5168108 |
Glass fiber reinforced nylon compositions comprising poly(amide-ether) block copolymer
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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