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Matches 1 - 50 out of 2,013

Document Document Title
WO/2018/163003A1
Disclosed is a method of producing formaldehyde from formic acid. The method includes obtaining a gaseous mixture comprising formic acid and water vapor and contacting the gaseous mixture with a metal catalyst in a reaction chamber under...  
WO/2018/134075A1
A process for making an oxymethylene polymer comprising polymerizing at least one compound capable of forming -CH2O- repeat units (monomer) in the presence of at least one ester of the general formula I (ester): R1-CO-O-R2 (I) wherein R1...  
WO/2018/114843A1
The invention relates to a method for producing a polyoxymethylene bock copolymer, comprising the following steps: providing a polymer starter compound with at least two Zerewitinoff-determined active H atoms and a catalyst component in ...  
WO/2018/084281A1
The present invention addresses the problem of providing a method for producing an oxymethylene copolymer, which is capable of producing an oxymethylene copolymer having a high molecular weight with high yield and high economic efficienc...  
WO/2018/037040A1
The invention relates to a method for producing a polyurethane polymer, comprising the step of reacting a polyol component with a polyisocyanate component, the polyol component comprising an oxymethylene polyol. The ratio of the polyol c...  
WO/2018/021526A1
A quaternary ammonium compound represented by formula (1). [(R1)m(R2)4-mN+]nXn- (1) (In the formula, each R1 independently represents an unsubstituted alkyl group or substituted alkyl group having 1-30 carbon atoms, an aryl group having ...  
WO/2017/216131A1
The present disclosure relates to the use of a resin as grinding aid for an ore or mineral, wherein the resin is a monomer-based condensation product comprising at least one monomer having an aldehyde moiety and/or being an aldehyde sour...  
WO/2017/159602A1
The present invention provides a method for producing an oxymethylene copolymer which is not susceptible to deterioration due to oxidation, and which is reduced in formaldehyde generation amount, especially in formaldehyde generation amo...  
WO/2017/146421A1
The present invention relates to a method for producing a water-based resin, the method eliminating by a chemical means formaldehyde gas generated during production of water-based thermoset resin such as water-based urea resin, water-bas...  
WO/2017/139849A1
A method of treatment of viral infection in a subject comprising administering to the subject a copolymer comprising an acrolein derived segment or a polyacrolein oligomer segment and a polyalkylene glycol oligomer segment, the copolymer...  
WO/2017/051811A1
This polyacetal resin composition has exceptional durability. The polyacetal resin composition includes 100 parts by mass of a (A) polyacetal resin and 10 parts by mass to 100 parts by mass of a (B) glass filler. A (C) polyacetal resin m...  
WO/2016/147998A1
The present invention provides an antimicrobial fiber which has exceptional antimicrobial properties without adding an antimicrobial agent, and in which the antimicrobial properties persist despite repeated washing. Provided is an antimi...  
WO/2016/125358A1
Provided is a polyacetal resin composition which is suppressed low in formaldehyde generation, while having high stiffness and high toughness. A production method according to the present invention comprises a step for blending from 0.1 ...  
WO/2016/104065A1
The invention provides a method for producing an oxymethylene copolymer including a polymerization step for cationically polymerizing trioxane and a comonomer at a polymerization temperature of 135 to 300°C in the presence of at least o...  
WO/2016/098029A1
A water soluble polyoxymethylene copolymer is described. In one embodiment, the polyoxymethylene copolymer is a liquid at 35°C and is water soluble. The polyoxymethylene copolymer may have a comonomer content of greater than about 60% b...  
WO/2016/077879A1
A method of treatment of infection in a subject comprising administering to the subject a copolymer comprising an acrolein derived segment or a polyacrolein oligomer segment and a polyalkylene glycol oligomer segment, the copolymer havin...  
WO/2016/049290A3
Polyimide membranes are provided that provide extremely high permeability. The polyimides do not contain carbonyl or sulfonyl functional groups. These membranes are useful in separating gases including the separation of gas pairs includi...  
WO/2016/040293A1
The present invention provides a gel comprising a physical network formed of polymer chain crystallites interconnected by amorphous chain segments. Functionalization of the chain segments between the crystallites forms a blocky distribut...  
WO/2016/011723A1
Disclosed is a paraformaldehyde production method. A formaldehyde solution is used as the raw material, and is evaporated and concentrated to produce fine, soluble, and fluid paraformaldehyde after spray granulation in a spray granulatio...  
WO/2016/011724A1
Disclosed is a paraformaldehyde production apparatus, comprising a formaldehyde evaporation and concentration apparatus, a spray granulation tower, a fluidized bed dryer, a cyclonic separator, and a tail gas absorption apparatus. The pre...  
WO/2016/010587A1
A method of recycling bis(hydroxyalkyl) terephthalate monomer from a composition comprising a terephthalate-containing polymer includes depolymerizing the terephthalate- containing polymer to provide the bis(hydroxyalkyl) terephthalate; ...  
WO/2015/177208A1
Poly-1,3-dioxepane, poly-1,3-dioxolane, polytetrahydrofurane or mixtures thereof are used in molding materials comprising polyoxymethylene or a copolymer containing a majority of oxymethylene units, for improving the flexural toughness o...  
WO/2015/168809A1
Self-immolative polymers degrade by an end-to-end depolymerisation mechanism in response to the cleavage of a stabilizing end-cap from the polymer terminus. Examples include homopolymers, mixed polymers including block copolymers, suitab...  
WO/2015/155094A1
The invention relates to a process for producing polyoxymethylene block copolymers, comprising the step of activating the DMC catalyst in the presence of an OH-terminated polymeric formaldehyde starter compound by means of a defined amou...  
WO/2015/151342A1
A process for producing a polyacetal copolymer, the process making catalyst deactivation easy and efficient, requiring no cleaning step, merely requiring simple equipment and simple operation techniques, and rendering a high polymerizati...  
WO/2015/151343A1
The purpose of the present invention is to provide a high-quality polyacetal copolymer economically advantageously by a simple process. The present invention comprises: a raw material supply step (S1) of supplying a raw material comprisi...  
WO/2015/135948A1
The invention relates to a method for producing polyacetal-polyesters by reacting cyclic anhydrides with aldehydes, characterised in that the reaction of aldehydes with cyclic anhydrides is carried out in the presence of a catalyst and a...  
WO/2015/086452A1
The invention relates to a method for producing formaldehyde alkylene carbonate copolymers, said method comprising the step of reacting trimer, oligmer and/or polymer formaldehyde with an alkylene carbonate in the presence of a calatyst....  
WO/2015/077023A1
A biodegradable aliphatic polyester which is a reaction product of a functional Michael acceptor and a functional Michael donor, wherein the functional Michael acceptor comprises R1(A)n and the functional Michael donor comprises R2(D)m, ...  
WO/2015/008537A1
Provided is a method for producing an oxymethylene copolymer continuously and with high polymerization yield, whereby it becomes possible to improve heat stability and the formaldehyde generation amount while keeping MD resistance and fo...  
WO/2015/005169A1
 The present invention provides a liquid-state trioxane composition having trioxane as a main component and including an antioxidant and at least one alkaline organic compound selected from the group consisting of an amine compound hav...  
WO/2015/005206A1
The present invention provides a method for producing polydioxolane which includes a step for polymerizing a 1,3-dioxolane compound represented by formula (1) while in the presence of a cationic catalyst, and 10-1500ppm of a sterically h...  
WO/2015/002147A1
Provided is a method of producing an oxymethylene copolymer which involves a polymerization step in which trioxanes and a comonomer are cationically polymerized at a polymerization temperature of 135°C-300°C in the presence of a protic...  
WO/2014/198689A1
The present invention relates to a method for producing polyethercarbonate-polyoxymethylene block copolymers, comprising the step of polymerising formaldehyde, wherein formaldehyde is polymerised in the presence of a polyethercarbonate h...  
WO/2014/196385A1
A method for the continuous production, at high polymerization yield, of an oxymethylene copolymer having improved thermal stability and formaldehyde emission, while maintaining toughness and rigidity, is provided. Provided is a producti...  
WO/2014/191348A1
The invention relates to a method for producing polyoxymethylene by polymerizing a reaction mixture (RG), which contains at least one formaldehyde source and at least one initiator mixture (IG), wherein the initiator mixture (IG) contain...  
WO/2014/189139A1
Provided is a method for producing an oxymethylene copolymer having excellent extrusion moldability and reduced voids in a molded article without lowering the inherent performance of an oxymethylene copolymer. Provided is a method for pr...  
WO/2014/181358A3
The present invention discloses isohexide based compounds and their polymers which are derived from renewable resources and are potentially degradable. Also disclosed herein is the synthesis of isohexide based monomers and their polymers...  
WO/2014/181358A9
The present invention discloses isohexide based compounds and their polymers which are derived from renewable resources and are potentially degradable. Also disclosed herein is the synthesis of isohexide based monomers and their polymers...  
WO/2014/175043A1
The present invention provides a high-quality polyacetal copolymer by means of a simple process in an economical manner. The present invention includes: a starting material supply step for supplying a starting material including trioxane...  
WO/2014/175042A1
The present invention provides a high-quality polyacetal copolymer by means of a simple process and in an economical manner. The present invention includes: a starting material supply step for supplying a starting material including trio...  
WO/2014/170242A1
The invention relates to polyoxymethylene copolymers with medium molecular weight, processes for producing these, and their use. The invention furthermore relates to thermoplastic compositions which comprise mixtures of polyoxymethylene ...  
WO/2014/137126A1
The present invention relates to a method for preparing a polyoxymethylene polymer, and a polyoxymethylene polymer prepared thereby, and more specifically, to: a method for preparing a polyoxymethylene polymer capable of omitting or simp...  
WO/2014/129805A1
The present invention relates to a thermally conductive resin composition comprising: (A) 20-50 wt% of a liquid crystal polymer; and (B) 50-80 wt% of a spherical thermally conductive filler surface-treated with a silane-based oligomer, w...  
WO/2014/119394A1
 Provided is a polyacetal resin composition that can meet the demands for high level and varied mechanical properties that are required in accordance with the expansion of the field of use for polyacetal resin. The polyacetal resin c...  
WO/2014/102695A3
A polyoxymethylene polymer is disclosed that contains long-chain alkyl end groups. The polyoxymethylene polymer may be formed by using a Bis-alkylformal as a chain transfer agent during production of the polymer. In one embodiment, the B...  
WO/2014/102696A3
A polyoxymethylene polymer is disclosed that contains long-chain alkylene glycol end groups. The polyoxymethylene polymer may be formed by using a Bis- oligo-alkylene glycol-formal as a chain transfer agent during production of the polym...  
WO/2014/095679A1
The invention relates to a method for producing NCO-modified polyoxymethylene block copolymers comprising the step of polymerizing formaldehyde in a reaction vessel in the presence of a catalyst, the polymerization of formaldehyde in add...  
WO/2014/095971A3
The invention relates to a method for producing functionalized polyoxymethylene block copolymers comprising the step of polymerizing formaldehyde in a reaction vessel in the presence of a catalyst, the polymerization of formaldehyde in a...  
WO/2014/083983A1
Provided is a production method for a polyacetal copolymer that makes deactivation of a catalyst simple and efficient and that achieves a high polymerization yield and high quality using equipment that does not require a cleaning step an...  

Matches 1 - 50 out of 2,013