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7405265 |
Method of preparing catalyst for polymerization of aliphatic polycarbonate and method of polymerizing aliphatic polycarbonate
Disclosed is a method of preparing a catalyst for polymerization of aliphatic polycarbonates and a method of polymerizing an aliphatic polycarbonate. This method includes reacting a zinc precursor...
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7160962 |
Elastomer-modified epoxy siloxane compositions
Elastomer-modified Epoxy-polysiloxane compositions of this invention are prepared by combining a silicone intermediate, with an epoxy resin, an elastomeric resinous intermediate, a polyfunctional...
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7053250 |
Method of preparing a polyether polyol
An improved method for synthesizing a double metal cyanide (DMC) catalyst combines and sonicates aqueous and non-aqueous solutions of a first metal salt, such as Zn(OAc) 2 , of a second metal salt,...
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7034103 |
Process for production of polyols with hydroxide containing double metal cyanide (DMC) catalysts
The present invention provides process for producing polyols using a crystalline, hydroxide containing double metal cyanide (DMC) catalyst of the formulae (I) or (II),
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6979722 |
Process for production of alkyllene oxide polymers
According to a process for production of alkylene oxide polymers offered by the present invention, an alkylene oxide is subjected to a polymerization reaction under presence of a catalyst in a...
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6977236 |
Preparation of a double metal cyanide catalyst
The present invention relates to a process for the preparation of a double metal cyanide (DMC) catalyst, which process involves:
(a) combining an aqueous solution of metal salt with an...
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6835801 |
Activated starter mixtures and the processes related thereto
The present invention is directed to an activated starter mixture which can be used to prepare polyoxyalkylene polyols. The present invention is also directed to a process for preparing an...
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6833431 |
Double-metal cyanide catalysts for preparing polyether polyols
The invention is directed to a double-metal cyanide catalyst for the preparation of a polyether polyol by the polyaddition of an alkylene oxide on to a starter compound containing active hydrogen...
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6830704 |
Composition of 2-cyanoacrylate, lewis acid metal salt and clathrate
A 2-cyanoacrylate composition useful as an adhesive contains a Lewis acid metal salt comprising a metal such as aluminum, gallium, indium or thalium, and the conjugate base of an acid such as a...
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6815529 |
Catalyst for producing aliphatic polycarbonate and the preparation thereof
This invention relates to a catalyst for producing aliphatic polycarbonate, which is composed of a rare-earth coordination compound; an alkyl metal compound; a polyol; and a carbonate. The...
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6713599 |
Formation of polymer polyols with a narrow polydispersity using double metal cyanide (DMC) catalysts
A method of forming a polyol includes the steps of reacting an initiator with an alkylene oxide, and optionally carbon dioxide, in the presence of a double metal cyanide catalyst and a sterically...
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6699961 |
DMC complex catalyst and process for its preparation
A process for the preparation of a DMC catalyst useful in the polymerization of alkylene oxides into polyether polyols, which process having the steps of (a combining an aqueous solution of a metal...
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6632897 |
Use of nano-scaled metal oxide particles as polymerization catalysts
Described is the use of nanoscale metal oxide particles as catalysts for the thermal and/or photochemical polymerization of species having at least one polymerizable carbon-carbon multiple bond...
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6624286 |
Double-metal cyanide catalysts containing polyester for preparing polyether polyols
The invention relates to new improved double-metal cyanide (DMC) catalysts for the preparation of polyether-polyols by polyaddition of alkylene oxides on to starter compounds containing active...
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6569981 |
Crystallizing polyether polyols, a method for producing them and use of the same
This invention relates to crystallizing polyether polyols which can be produced firstly by the reaction of propylene oxide and polyhydroxy compounds in the presence of an alkoxy compound which...
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6552163 |
Method for fractioning poly (ethylene oxide) formed using a metallic cyanide catalyst
A poly(ethylene oxide) polymer having low and high molecular weight fractions is fractionated by dissolving the polymer in a solvent for the low molecular weight fraction. A good separation of the...
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6547985 |
Composition of 2-cyanoacrylate, Lewis acid metal salt and clathrate
A 2-cyanoacrylate composition useful as an adhesive contains a Lewis acid metal salt which comprises a specific metal such as aluminum, gallium, indium or thallium, and the conjugate base of an...
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6541593 |
Process for the preparation of polyether oligomer containing reactive silicon group
A process for producing a reactive silicon group-containing polyether oligomer, which comprises reacting (a) a polyether oligomer the backbone chain of which comprises a polyether and which...
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6528616 |
Double metal cyanide catalysts for the production of polyther polyols
The invention relates to new double metal cyanide (DMC) catalysts for the production of polyether polyols by polyaddition of alkylene oxides to starter compounds containing active hydrogen atoms,...
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6503995 |
Method of producing crosslinkable silyl group-containing polyoxyalkylene polymers
A method of producing a polyoxyalkylene polymer having at least one crosslinkable silyl group and at least one hydroxyl group in each molecule which comprises treating a polyoxyalkylene polymer...
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6458918 |
Method for producing partially crystalline polyether polyols
The present invention relates to a process for the preparation of novel, partially crystalline polyether polyols with a functionality of ≧2, an average molecular weight M n of 500 to 100,000 and...
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6388048 |
Complexing agent-modified trimetal cyanide catalyst
Metal [hexacyanocobaltate, cobalthexanitrite nitroferricyanide] complexes are useful alkylene oxide polymerization catalysts. The metal is any that forms a precipitate with the hexacyanocobaltate,...
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6376645 |
Complexing agent-modified hexacyanometallate hexanitrometallate catalysts
Metal [hexacyanometallate hexanitrometallate] complexes are useful alkylene oxide polymerization catalysts. The metal is any that forms a precipitate with hexacyanometallate and hexanitrometallate...
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6245880 |
Organophosphorous composition, method of producing organophosphorous compound, polyester composition and method of producing the same
A polyester having a good color tone can be obtained by using, as an ester-forming component, a compound derived from an organophosphorous composition comprising an organophosphorous compound...
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6235808 |
Radiation-curable cycloaliphatic epoxy compounds, uses thereof, and compositions containing them
Disclosed are compounds of the formulas ##STR1## which are useful as monomers in photopolymerizable compositions. Also disclosed are methods of polymerizing these monomers, and polymers produced...
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6084059 |
Production process for organometallic fine particle and catalyst for polymerization
The present invention provides: a production process for a polyalkylene oxide with fast polymerization reaction rate and good production efficiency; a catalyst for polymerization and a dispersion...
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6051680 |
Silylated double metal cyanide complex catalysts
The amount of high molecular weight impurity present in a polyether polyol produced by alkoxylation of an active hydrogen-containing initiator using a double metal cyanide complex catalyst may be...
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6015914 |
Compound having oxetanyl group, process for producing same, and curing composition
Provided is a compound having an oxetanyl group and represented by the following formula: ##STR1## wherein R 1 represents a methyl group or an ethyl group and R 2 represents a hydrogen atom, a...
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5844070 |
Process for rapid activation of double metal cyanide catalysts
A process for activating double metal cyanide catalysts is disclosed. A polyol starter or starter/catalyst mixture is heated under vacuum under conditions effective to achieve improved stripping...
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5770678 |
Polymerization of, and depolymerization to, cyclic ethers using selected metal compound catalysts
A process for polymerizing oxiranes, oxetanes, oxepanes, dioxolanes, trioxanes, and tetrahydrofurans to their respective polymers by contacting them with a selected metal compound is disclosed; and...
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5731407 |
Double metal cyanide complex catalysts
Improved double metal cyanide catalysts are disclosed. The substantially amorphous catalysts of the invention are more active for polymerizing epoxides than conventional DMC catalysts, which have a...
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5663289 |
Preparation and polymerization of initiators containing multiple oxetane rings: new routes to star polymers
This invention relates to novel multifunctional oxetanes, i.e., compounds having multiple oxetane groups, which are useful as initiators in the preparation of star polymers and polymer cascades...
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5641853 |
Polymerization of cyclic ethers using selected metal compound catalysts
A process for polymerizing oxepanes, dioxolanes, trioxanes, and tetrahydrofurans to their respective polymers by contacting them with a selected metal compound and an accelerator which is a...
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5614126 |
Solventless curable resin composition, in particular for the fabrication of prepregs
The invention relates to a substantially solventless curable resin composition, in particular for the fabrication of prepregs, which contains more than 45% by weight of substances which are solid...
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5478920 |
Cyclic ether polymerization using silicon compound accelerators
When selected silicon compounds are added to cationic polymerizations of cyclic ethers such as oxiranes and tetrahydrofurans, the rate of polymerization is often increased, and novel polyethers are...
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5470896 |
Storage-stable solutions of accelerator systems
Solutions of accelerator systems comprising a binary system comprising a) 10 to 90% by weight of a salt of formula I [Me] m x ♁ [R] n y .crclbar. (I), wherein x and y are the...
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5357038 |
Process and composition for providing double metal cyanide catalyzed polyols having enhanced reactivity
The present invention relates to a process for improving the polyurethane-forming reactivity of a propylene oxide-based ethylene oxide-free polyol produced using a double metal cyanide complex...
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5326852 |
Method for production of alkylene oxide polymers
The present invention is directed to a method for production of alkylene oxide polymers comprising reacting an alkylene oxide in an inert hydrocarbon solvent in the presence of a catalyst. The...
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5290912 |
Process for producing a polyoxyalkylene compound
The present invention has an object of producing a polyoxyalkylene compound by ring-opening polymerization of an alkylene oxide to a certain specific highly hydrophobic initiator. The present...
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5051492 |
Polyether resins and process for preparing the same
A process for the preparation of a polyether resin having an epoxy group content of less than 0.2 meq/g and containing or average n/3-0.5 to n/3+2.5 primary hydroxyl groups, the process comprising...
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4988797 |
Cationic polymerization of cyclic ethers
Cyclic ethers having 4 and 5 member rings are polymerized with a alcohol initiator and an acid catalyst. The acid catalyst is used at a molar ratio relative to hydroxyl groups of the alcohol...
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4716185 |
Curable mixtures based on diglycidyl compounds and metal complex compounds
Curable mixtures, containing, (a) at least one bisphenol diglycidyl ether based on bisphenol A, hydrogenated bisphenol A or bisphenol F, (b) as a curing catalyst, a colorless or slightly...
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4667013 |
Process for alkylene oxide polymerization
The molecular weight of polyalkylene oxides produced by the polymerization of a cyclic oxide in contact with a catalyst comprising the reaction product of a dihydrocarbyl zinc compound and a linear...
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4654416 |
Homopolymerization of bicyclic amide acetal
Novel polyamide containing polymers are obtained by the homopolymerization of a bicyclic amide acetal with a cationic catalyst such as lithium fluoborate.
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4487914 |
Curing agents for epoxy resins
A curable composition comprising an epoxy resin or a monoepoxide and a curing agent comprising a metal salt complex of an adduct of an imidazole and a monofunctional epoxy compound.
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4482679 |
Heat-curable epoxy compositions containing diaryliodosyl salts
Compositions that cure when heated comprise (A) an epoxide resin and (B) an effective amount of (i) a diaryliodosyl salt of formula ##STR1## where R 1 and R 2 , which may be the same or...
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4439594 |
Curable epoxy resin compositions
Curable compositions of matter comprising an epoxy resin and a curing agent selected from the group consisting of polyvalent metal salts of a phosphorodithioic acid, the acid being derived from the...
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4302573 |
Metal salt/amine complexes as epoxy resin catalytic curing agents
Novel carboxylic acid metal salt/amine complexes are prepared by reacting 1 mol of a carboxylic acid metal salt of the formula (A .crclbar .) 2 ME 2 + in which A .crclbar . is the anion of a...
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4115296 |
Polyhalocarboxylic acid salts as accelerators for curing epoxide resins
To accelerate the curing of epoxide resins by particular curing agents, i.e., polyamines, polyaminoamides, polycarboxylic acids, or polycarboxylic acid anhydrides, there is employed an aliphatic or...
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4072804 |
Cross-linkable epoxy resin casting compounds
The invention provides epoxy resin casting compounds based on polyepoxides, polycarboxylic acids and/or polycarboxylic acid anhydrides with directly or latently present carboxyl functions, which...
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