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5045607 |
Acetal polymer blends
There are provided new moldable blends of a normally crystalline acetal polymer and a normally non-crystalline elastomeric copolymer of about 15 to 45 mol %, preferably about 25 to 35 mol % of...
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5043398 |
Grafting of functional compounds onto functional oxymethylene polymer backbones, with diisocyanate coupling agents, and the graft polymers thereof
Novel oxymethylene graft polymers are obtained by grafting a functional compound (i.e., a polymer or compound having one or two hydroxyl, carboxyl, or amine functional groups) onto an oxymethylene...
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5000899 |
Spandex fiber with copolymer soft segment
A elastic fibers are formed from spandex polymer that is prepared by reacting a glycol prepared from a tetrahydrofuran/3-methyltetrahydrofuran copolymer with a diisocyanate and then chain extending...
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4978725 |
Toughened polyoxymethylene and shaped articles produced therefrom
The invention relates to mixtures composed essentially of polyoxymethylene and of 5 to 60% by weight of a polyurethane, the polyurethane being built up exclusively from aliphatic components and...
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4958005 |
Fluorine-containing compositions and process for preparing the same from cyclic iminoethers
A fluorine-containing composition represented by formula (I) ##STR1## wherein X represents a group containing a polyfluoroaliphatic group having from 3 to 26 carbon atoms; R represents a hydrogen...
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4952644 |
Synthesis of ABA triblock polymers and A.sub.n B star polymers from cyclic ethers
ABA triblock and A n B star polymers are produced by sequential cationic polymerization of 4 and 5 member ring cyclic ethers to initially form a B block and subsequent cationic polymerization of 4...
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4946906 |
Process for producing polyoxymethylene-polyurethane type alloy
A process for producing a polyoxymethylene-polyurethane type alloy, which comprises allowing a polyisocyanate compound, a short chain polyol with a molecular weight of 62 to 350, a long chain...
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4942208 |
Polyacetal lighter body resin
A novel polyacetal resin blend provides for dimensionally stable rib-reinforced tubular bodies upon injection molding of the blend. The blend comprises a major proportion of an oxymethylene...
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4933396 |
Method of making purely primary diamines
The present invention provides a method for making primary amine terminated linear polyethers of molecular weight above about 3500 which have virtually no contamination from in-chain secondary...
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4859747 |
Perfluorination of ethers in the presence of hydrogen fluoride scavengers
The direct fluorination of ethers in the presence of hydrogen fluoride (HF) scavengers such as sodium fluoride and potassium fluoride is disclosed. Ethers (liquid or solid) are either mixed with...
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4857599 |
Modified dense star polymers
Dense star polymers on immobilized cores are very useful as ion-exchange resins and chelation resins. For example, an aminated form of chloromethylated styrene/divinyl benzene copolymer can be...
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4853434 |
Modified thermosetting resin, a method for its production and its use
There is disclosed a modified reaction resin with a content of 50 to 98% by weight of a liquid reaction resin or reaction resin mixture processed into thermosetting plastic with a suitable reactive...
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4833183 |
Poly [3-(substituted)-3(hydroxymethyl)oxetane] and method of preparing same
Poly[3,3-bis(hydroxymethyl)oxetane] ("PBHMO") is prepared in high molecular weight (n inh to 5.2) by polymerizing the trimethylsilylether of 3,3-bis(hydroxymethyl)oxetane with i-Bu 3 Al-0.7 H 2 ...
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4829134 |
Epoxy resin composition
An epoxy resin composition containing an oxazoline compound in an epoxy resin.
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4812519 |
Crosslinking of vinyl silane and azidosilane modified thermoplastic polymers by moisture
The modification of thermoplastic polymers with a combination of azidosilanes and monolefinically unsaturated monomers and subsequent crosslinking by moisture.
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4788278 |
Polyvinylene carbonate and polyhydroxymethylene, processes for their preparation and their use
The invention relates to modified polymers based on polyvinylene carbonate and/or polyhydroxymethylene, the modification being effected by particular alkoxylated compounds incorporated into the...
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4762883 |
Solutions of polymers in oxazolines and polymerizates thereof
A solution of a non-reactive polymer in a liquid oxazoline which may include a reactive additive such as a polyisocyanate to provide solid polymers by interpolymerization of the oxazoline and...
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4761441 |
Acid-curable compositions comprising mixtures of furan and epoxy resins and use in preparing formed, shaped, filled bodies
Acid-curable resin compositions are described which comprise a mixture of a furan resin and a minor amount of an acid-curable epoxy resin. The acid-curable resin compositions may contain other...
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4758608 |
UV curable non-crystalline acetal terpolymers
Ultraviolet curable terpolymers of trioxane, from at least 65 weight percent to about 75 weight percent of 1,3-dioxolane and from about 2 weight percent to about 20 weight percent of a...
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4741337 |
Surgical fastener made from glycolide-rich polymer blends
A surgical fastener is made from a glycolide-rich blend of polymers.
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4707525 |
Oxymethylene polymer molding compositions having enhanced impact resistance and article molded therefrom
Articles molded from oxymethylene polymer molding compositions of the present invention exhibit enhanced impact strength properties, especially at low temperatures such as -20° F. It has now been...
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4707527 |
Multicomponent systems based on polypyrrole
Compositions based on polypyrrole are described having incorporated therein a polymer component having one or more segments wherein at least one segment is elastomeric. The polymer component is...
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4694064 |
Rod-shaped dendrimer
Rod-shaped dendrimers having a plurality of dendritic branches emanating from an essentially linear core are prepared by first reacting a linear polyfunctional core compound such as a...
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4678833 |
Miscible polymer blends containing poly(2-alkyl-2-oxazoline)
Miscible blends of poly-2-oxazolines and thermoplastic polymers are disclosed herein. These blends exhibit a single glass transition point indicative of a miscible blend. The blends of this...
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4657953 |
Coating composition of polyol resin, isocyanate hardener and diluent
A coating composition comprises (A) a polyol resin obtained by the reaction of a prepolymer of epoxy resin and phosphorus compound having at least one P--OH bond, such as acids of phosphorus,...
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4657985 |
Multicomponent systems based on polythiophene
Compositions based on polythiophene are described having incorporated therein a polyether, such as polytetrahydrofuran. The polyether is present in an amount of at least about 10 weight percent of...
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4657947 |
Anticorrosive coating composition containing polyol resin, isocyanate hardener and diluent
A coating composition which comprises (A) a polyol resin obtained by the reaction of a prepolymer of epoxy resin and polyhydroxy penolic compound such as (i) poly-nuclear polyhydroxy phenols...
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4636552 |
Novel silicone/polylactone graft copolymer
Novel silicone/polylactone graft copolymers, well suited as polymer composition additives, especially those destined for biomedical applications, have the average general formula: ##STR1## in which...
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4617143 |
Oxidizing polymerization with AsF.sub.5
The invention relates to a process for the production of doped heterocyclic polymers, wherein sulphur-free heteroaromatic compounds are reacted with arsenic pentafluoride, optionally in the gas...
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4611032 |
Oxidizing polymerization with NO.sup.♁ and NO.sub.2.sup..crclbar.
Process for the production of doped polymers containing heteroaromatic 5-membered rings in which polymers of aromatic 5-ring membered heterocyclic compounds or low molecular weight compounds...
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4609691 |
Water-dispersible binders for cationic electrodepositable paints, and method for their production
The invention relates to water-dispersible binders for cationic electro-dip paints with a base of modified epoxy resins. The binders are produced by reaction of (A) epoxy resins having a...
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4608422 |
Preparation of hydroxyl-containing polymers
Hydroxyl-containing polymers are prepared by catalytic hydrogenation of acyloxy-containing polymers by a process in which a strong base is added to the acyloxy-containing polymers before or during...
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4605707 |
Quaternary polyalkylene imine containing 2-hydroxypropyltrimethyl ammonium salt pendent side chain groups
Polyalkylene imines containing 2-hydroxypropyltrimethylammonium salt side chains are obtained by reaction between alkylene imine polymers and copolymers and a glycidyltrimethylammonium salt. These...
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4595732 |
Siloxane imide diols and siloxane imide organic block polymers obtained therefrom
Siloxane norbornane imide bisphenols are provided and method for making such materials. The siloxane-imide norbornane bisphenols can be used to make a variety of siloxane-imide organic block...
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4587329 |
Dense star polymers having two dimensional molecular diameter
Dense star polymers having terminal group densities greater than conventional extended star polymers exhibit greater and more uniform reactivity than their corresponding conventional star polymers....
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4584352 |
Process for polymerizing poly-oxazoline in an ethylbenzene diluent
Process for the polymerization of poly-2-alkyl-2-oxazoline characterized by employing ethylbenzene as the diluent. The ethylbenzene comprises from zero to about 40 percent by weight total polymer...
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4563493 |
Omega-perfluoroalkyl-1,2-epoxyalkane copolymer and use thereof
A novel copolymer comprising (a) repeating units of the formula: --OCH[(CH 2 ) p R f ]CH 2 -- (Ia) or --OCH 2 CH[(CH 2 ) p R f ]-- (Ib) wherein R f ...
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4540747 |
Block copolymer
Block copolymers of poly(N-formylethyleneimine) or poly(N-acetylethyleneimine) with poly(N-acylethyleneimine or poly(N-acylpropyleneimine) having a molecular weight of 500 to 50,000 and a method...
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4518766 |
Polyoxyalkylenediol-α,ω-bisallyl polycarbonate useful as a base for sealants and process for its preparation
For preparing polyoxyalkylenediol-α,ω-bisallyl policarbonates, diallyl carbonate is reacted in a first reaction stage with a polyoxyalkylenediol having a mol wt between 400 and 4500 in the...
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4493752 |
Process for recovering trioxane by plural distillation
A process for recovering trioxane from an aqueous solution containing trioxane and triethylamine by the distillation separation process which comprises feeding an aqueous solution containing...
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4492788 |
Partially deacylated ultra-high molecular weight poly(N-propionylethylenimines)
Ultra-high molecular weight poly(N-propionylethylenimines) are disclosed that are useful as water purification agents. The polymers of this invention include partially deacylated...
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4491653 |
Controlled surface-fluorination process
Disclosed is a method for fluorinating the surface of a polymeric solid for improving a surface property of such solid while substantially maintaining the bulk physical properties of said solid....
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4486351 |
Use of polymeric ethylene oxides in the preparation of glycidyl azide polymer
An improved process of preparing hydroxy-terminated aliphatic polyethers having pendant alkyl azide groups is disclosed. The process entails reacting metal azide and hydroxy-terminated aliphatic...
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4481167 |
Sanitizing complexes of polyoxazolines or polyoxazines and polyhalide anions
The title complexes comprise (a) a poly-2-oxazoline or poly-2-oxazine, such as the homopolymers of polymerized 2-ethyl-2-oxazoline or 2-ethyl-2-oxazine, and (b) IBrCl - or polyhalide anion of the...
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4451618 |
Block copolymers and process for their preparation
Under particular conditions, a cationic ring-opening polymerization of an (single) oxirane monomer selected from the group consisting of an acyclic glycidyl ether, a cyclic glycidyl ether, and a...
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4409370 |
Thermoplastic blend of oxymethylene copolymers exhibiting improved impact resistance
A polymer blend comprising a first copolymer and a second copolymer and having improved impact resistance is provided. The first copolymer has recurring units which consist essentially of...
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4405762 |
Preparation of hydroxy-terminated poly(3,3-bisazidomethyloxetanes)
Polymerizing 3,3-bischloromethyloxetane to yield halomethyl polymer products having hydroxy functionality and a molecular weight between about 500-15,000 followed by reacting such products with...
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4387187 |
Compatible polymer blend compositions
A polymer composition in the form of a film which composition comprises a compatible blend of an alkylene oxide polymer such as polyethylene oxide and an aromatic polyethersulphone.
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4387217 |
High foaming iodophors
An iodophor containing a polyoxybutylene-polyoxy-ethylene nonionic block copolymer has unexpectedly high foam.
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4268450 |
Energetic hydroxy-terminated azido polymer
An energetic binder comprises a hydroxy-terminated aliphatic polymer having pendant alkyl azide groups and method for producing same.
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