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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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5917008 |
Polytetrafluoroethylene dispersions in an organic solvent and dispersing agents employed therein
Polytetrafluoroethylene (PTFE) dispersions in an organic solvent, comprising: (A) from 2 to 40% by weight of PTFE in powder form; (B) from 50 to 95% by weight of an organic solvent; (C) from 0.5 to...
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RE36234 |
Aspartic acid copolymers and their preparation
Aspartic acid precursors such as mono and diammonium maleate, maleamic acid, ammonium maleamate, ammonium malate and mixtures of these and other precursors are copolycondensed thermally with a...
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5907028 |
Method for making polyesterimide varnishes
A method for making polyesterimide varnishes by polycondensing and imidat a mixture of trimellitic anhydride, 4,4'-diamino-diphenyl methane, glycol, dimethyl terephthalate and glycerol or...
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5895718 |
Thermoplastic resin compositions and temperature-dependent shape-transformable/fixable products making use of the same
A thermoplastic resin composition comprising a thermoplastic resin (A) and a thermoplastic polymer (B) having a glass transition temperature within the range of from -20° C. to 70° C. which are...
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5895809 |
Method of producing partially aromatic copolyamides from aromatic dicarboxylic acid esters
The invention relates to a method of producing partially aromatic copolyamides from polymeric esters of aromatic dicarboxylic acids by amidation of the ester groups with diamines, removal of the...
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5889138 |
Process for making stain resistant nylon fibers from highly sulfonated nylon copolymers
A process for making stain resistant nylon fibers from a mixture of nylon and highly sulfonated nylon copolymer is disclosed. The highly sulfonated nylon has greater than about 4.0% weight of...
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5886131 |
Method for preparing 1,4-Bis(4-aminophenoxy)naphthalene and its polymers
A method for synthesizing 1,4-bis(4-aminophenoxy)naphthalene and a series of polyamides, polyimides and copoly(amide-imide)s derived from the said compound is disclosed. These polymers possess...
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5883219 |
Integrated circuit device and process for its manufacture
The invention relates to an integrated circuit device comprising (i) a substrate, (ii) metallic circuit lines positioned on the substrate, and (iii) a porous dielectric material positioned on the...
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5883166 |
Liquid internal mold release agents for unsaturated polyester thermosetting molding compounds
The present invention is a molding compound comprising an unsaturated polyester resin, a filler, a reinforcement material, a crosslinking monomer, a catalyst, and a mold release agent. The compound...
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5880252 |
Pyrrolidonyl-containing polyesters and polyamides
Pyrrolidonyl-containing polyesters and polyamides I to III ##STR1## where R, X, A and Z are defined herein, are suitable as film formers and conditioners in hair-cosmetic formulations, for...
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5876623 |
Biodegradable aspartic acid polymers for preventing scale formation in boilers
A biodegradable anti-scalant for steam generators, boilers and other heat transfer equipment is provided. Anti-scalants prepared in accordance with the present invention include aspartic acid,...
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5877270 |
Water solvent extraction degreasing method and molded products produced therewith
A water solvent extraction degreasing method capable of reducing degreasing time without consideration of abrupt decomposition/vaporization and swelling caused by heat. An organic binder is removed...
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5874522 |
Crosslinked polymeric ammonium salts
Disclosed are novel crosslinked polymeric ammonium salts wherein in said polymeric salt: about 25% or more of the segments which link ammonium nitrogen atoms are group Y wherein Y is an n-alkylene...
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5874519 |
Para-oriented aromatic polyamide shaped articles and preparation thereof
There are disclosed a para-aramid shaped article having a density of 1.390-1.470/cm 3 . The para-aramid has an inherent viscosity ηinh of at least 3.5 and contains metal ions of 500 ppm or less,...
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5874518 |
Epoxy-modified polyamide resin
An epoxy-modified polyamide resin obtained by reacting a diisocyanate(A) with at least one member selected from the group consisting of a dicarboxylic acid and a tricarboxylic acid anhydride (B) in...
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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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5859177 |
Process for subsequent condensation of polycondensates, in particular of polyamide 6.6
The process for single-stage postcondensation of a polycondensate in a fluidized bed reactor (1) includes feeding the polycondensate through the fluidized bed reactor (1); circulating a main stream...
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5859174 |
Amide functional monomers and acrylic polymers with amide functionality
Ethylenically unsaturated compounds are provided having Structure I and from which polymers with a plurality of groups of Structure II are derived. ##STR1## In Structures I and II, R 1 is hydrogen...
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5859175 |
Process for the preparation of polyether amide solutions, steam-sterilizable dialysis membranes obtainable using the polyether-amide solutions, and a process for the production of these membranes
Process for the preparation of polyether-amide solutions, steam-sterilizable dialysis membranes obtainable using the polyether-amide solutions, and a process for the production of these membranes....
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5859176 |
Polyamide resin composition
Disclosed is a polyamide resin composition comprising a melt-kneaded product of (A) a polyamide; (B) a polyphenylene ether; (C) a styrene polymer; and (D) a compound having in a molecule thereof a...
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5859180 |
Process for the solid state polycondensation of polyamide resins
Process for the solid state polycondensation of polyamide resins by the use in the polycondensation reactor of a quantity of an inert gas such that the ratio by weight between the solid capacity/h...
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5856429 |
Polyamide compositions for removal of polyphenols from liquids
Amide-containing polymers characterized by the presence of piperazine amide and/or substituted piperazine amide in the polymer chain are used as adsorbents to remove polyphenolic compounds from...
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5856428 |
Crystalline aromatic polyamide resin composition
An aromatic polyamide resin composition composed of two types of aromatic polyamide (A) and (B), where (A) is an aromatic polyamide wherein the molar ratio of aromatic polyamide with respect to the...
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5856426 |
Para-oriented aromatic polyamide porous film
A para-oriented polyamide porous film comprising a fibril having a diameter of not more than 1μ, with fibrils planarly arranged as a network or nonwoven fabric and laminated in a layer, the...
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5854376 |
Aliphatic ester-amide copolymer resins
A composition of an aliphatic ester-amide copolymer which is soluble in an organic solvent with an LD 50 value (orally administered to a rat) of about 2,000 mg/kg or more.
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5852165 |
Terpolymer polyamide, polyamide resin composition containing the same, and automotive parts obtaining from these
A crystalline terpolymer polyamide produced from: (a) an equimolar salt of hexamethylenediamine with adipic acid, (b) an equimolar salt of hexamethylenediamine with terephthalic acid, and (c)...
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5852155 |
Compositions of polyesteramides
Disclosed are polyesteramide resin compositions having amide units of formula (I): ##STR1## and the units of the formula (II): ##STR2## wherein the polyesteramide is substantially devoid of units...
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5844065 |
2,2'-dimethyl-4,4'-bis (4-aminophenoxy) biphenyl, and polymers prepared therefrom by polycondensation
A new diamine, 2,2'-dimethyl-4,4'-bis(4-aminophenoxy)-biphenyl was synthesized and used to prepare high performance engineering plastics by polycondensation. The new diamine as shown in the...
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5837802 |
Fast setting water sensitive polyamides having a high T.sub.g
The present invention relates to a fast setting water sensitive polyamide composition which is the reaction product of at least one reactant which is a dicarboxylic acid, ester or anhydride thereof...
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5834581 |
Process for making polyimide-polyamic ester copolymers
A process for making polyimide-polyamic ester copolymer composition comprising reacting at least one diamine, a pyromellitic diacid diester compound; at least one other tetracarboxylic diacid...
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5830975 |
Polyamide-based powder composition for the coating of metal substrates
The invention relates to a mixture in powder form and comprising (i) at least one polyamide and (ii) at least one polymer (A) containing hydroxyl functional groups and compatible with the...
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5830987 |
Amino-acrylate polymers and method
An amino-acrylate polymer is prepared by the reaction of an aliphatic hydroxyl polyacrylate monomer, like pentaerythritol triacrylate, with a polyamine like a hexyldiamine to provide a rigid fast...
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5830986 |
Methods for the synthesis of functionalizable poly(ethylene oxide) star macromolecules
Methods are provided for the synthesis of poly(ethylene oxide) ("PEO") star macromolecules including functionalizable groups. In one embodiment, a core molecule including a plurality of dendritic...
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5824763 |
Process for the manufacture of nylon compositions with improved flow
A process is disclosed for preparing a polyamide by polymerizing a diacid and a diamine, aminocarboxylic acid or lactam in the presence of excess of either acid or amine such that the ratio of acid...
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5821320 |
Method of producing the aromatic polyimide
18.4 grams of 4,4'-(hexafluoroisopropyridine)diphthalic acid dianhydride and 7.5 grams of 1,4-phenylenediamine dihydrochloride are mixed in a solvent consisting of 80 ml of N-methyl-2-pyrrolidone...
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5821326 |
Process for preparing mono and polyaspartates
The present invention relates to a new process for preparing mono and polyaspartates from primary mono and polyamines and maleates in presence of five-membered aromatic ring compounds containing...
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5817742 |
Polymer-conjugated malonic acid derivatives and their use as medicaments and diagnostic agents
Polymer-based polyvalent malonic acid derivatives having anti-adhesive properties are described. The compounds comprise a polyamino acid linked to a group of formula (I). In formula (I), R 1 and R...
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5817741 |
Flexible diamine compound, and polyamide and polyimide prepared therefrom by polycondensation
A diamine which is useful in preparing a new flexible polyamide and polyimide with an aromatic dicarboxylic acid and a tetracarboxylic dianhydrides, respectively, has a general formula as follows:...
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5811538 |
Process for the purification of oligomers
Methods for purifying an oligomer by normal phase column chromatography on a support selected from polyhydroxyethyl aspartamide, hydrophilic silica and silica from an oligomer impurity having a...
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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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5801278 |
Low water diamine-dicarboxylic acid salt preparation
The invention provides a process for directly manufacturing a diamine/dicarboxylic acid salt with a low water content. The process includes reacting a diamine with a dicarboxylic acid to form a...
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5798432 |
Method of making thermotropic liquid crystalline polymers containing hydroquinone
Liquid crystalline polymers that are made from 4-hydroxybenzoic acid, 2,6-naphthalenedicarboxylic acid, terephthalic acid, hydroquinone, and N-acetyl-4-aminophenol by heating the monomers in the...
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5792827 |
Addition products, radiation-curable surface coating compositions based on the addition products and their use for woodcoating and papercoating
The present invention relates to addition products of A) oligomers having at least two acrylic ester and/or methacrylic ester groups per molecule and B) diamines having a primary and a...
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5789534 |
Process for purifying a fluorinated polyether having at an end thereof a terminal vinyl group linked thereto through an amide group-containing linkage
The purification process comprises removing carboxylic acids and/or carboxylic acid salts contained as impurities in a fluorinated polyether having at at least one end thereof a terminal vinyl...
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5789525 |
Process for making polyimides from diamines and tetracarboxylic diacid diester
A process for making polyimide composition comprising reacting at least one diamine, at least one tetracarboxylic diacid diester, selected phosphoramide and at least one base catalyst to form at...
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5789529 |
Polyamide resin composition and tubular molding comprising the same
A polyamide resin composition comprising: (A) 100 parts by weight of at least one member selected from a polyamide-11 resin and a polyamide-12 resin; optionally (B) from 3 to 30 parts by weight of...
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5789524 |
Chemical imidization reagent for polyimide synthesis
A process for producing a polyimide composition by reacting at least one polyamic acid or at least one polyamic ester or a mixture of at least one polyamic acid and at least one polyamic ester with...
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5783655 |
Aromatic polyamide pulp by means of continuous transferable polymerization-orientation method and a process for preparation thereof
A process for the preparation of aromatic polyamide pulp having both excellent physical properties and a high degree of polymerization by continuous polymerization and orientation by using of mixed...
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5783656 |
Polyamic acid, polyimide and liquid crystal aligning agent
There are provided a polyamic acid obtainable by reacting a diamine compound of the formula (1) ##STR1## wherein R 1 is an alkyl group having 1 to 12 carbon atoms, a haloalkyl group having 1 to 12...
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