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Matches 1 - 50 out of 2,136

Document Document Title
WO/2021/204789A2
The present invention relates to a process for recycling polyacetal having from 8 to 100 000 carbon atoms for obtaining a produced polyoxymethylene dialkyl ether of formula R-(OCH2)n-OR', in which R and R' independently represent a methy...  
WO/2021/163025A1
This invention relates to a method for synthesizing polyoxymethylene on a substrate. The method includes depositing a monomer capable of forming polyoxymethylene by an initiated polymerization reaction and an initiator, via initiated che...  
WO/2021/151160A1
A process for preparation of a biologically active polymer comprising an acrolein derived segment and a polyalkylene glycol oligomer, the process comprising reacting polyalkylene glycol with acrolein in aqueous solution to form a copolym...  
WO/2021/122402A1
The present invention relates to a method for producing a polyoxymethylene polyoxyalkylene copolymer, comprising reacting a polymer formaldehyde compound with an alkylene oxide in the presence of a double metal cyanide (DMC) catalyst, wh...  
WO/2021/039003A1
The purpose of the present invention is to improve the mechanical strength of a polyacetal resin, in particular, the tensile strength and the bending strength. The purpose of the present invention is achieved by a polyacetal resin comp...  
WO/2020/261712A1
The purpose of the present invention is to provide a polyacetal resin composition having improved levels of mechanical properties. The polyacetal resin composition is obtained by mixing, with respect to 100 parts by mass of a polyaceta...  
WO/2020/261693A1
The purpose of the present invention is to provide: a polyacetal resin composition that has excellent weather resistance, that can be used to form a molded article inhibiting the occurrence of formaldehyde to a very low level, and that h...  
WO/2020/255543A1
The purpose of the present invention is to provide a novel polyacetal copolymer excellent in terms of producibility and mechanical property due to the introduction of a group having a new structure and to provide a method for producing t...  
WO/2020/250945A1
A method for producing an oxymethylene polymer, said method being capable of highly efficiently producing an oxymethylene polymer with high polymerization degree, while suppressing the amount of generated odor, has been waited for. An ox...  
WO/2020/137414A1
The purpose of the present invention is to provide a polyacetal resin composition having an improved level of mechanical properties. The purpose of the present invention is achieved by a polyacetal resin composition that can be obtained ...  
WO/2020/137413A1
The objective of the present invention is to provide: a novel polyacetal copolymer having excellent productivity and mechanical properties by introducing a group having a new structure; and a method for producing the same. The objective ...  
WO/2020/114751A1
In a process for producing polyoxymethylene-polyalkylene oxide block copolymers comprising the step of polymerizing an alkylene oxide in the presence of an OH-terminated polyoxymethylene polymer and a catalyst, the polyoxymethylene polym...  
WO/2020/110641A1
The purpose of the present invention is to provide a polyacetal resin composition which has improved mechanical properties. The present invention has been achieved by a polyacetal resin composition which is obtained by mixing 0.1-100 p...  
WO/2020/104512A1
A process for producing polyoxymethylene polymers comprises the reaction of aqueous formaldehyde solution with an aqueous solution of a base, wherein A) a starter solution comprising formaldehyde is initially charged and B) an aqueous fo...  
WO/2020/099601A1
The invention relates to a process for preparing prepolymers that comprise a polyoxymethylene block. The invention also relates to prepolymers that can be obtained by said process and to mixtures of the prepolymers with OH-reactive compo...  
WO/2020/083814A1
The invention relates to a method for producing a polyoxymethylene polyoxyalkylene block copolymer, said method including the process of reacting a polymer formaldehyde compound with alkylene oxide in the presence of a double metal cyani...  
WO/2020/068390A1
A process for forming stabilizing paraformaldehyde can include heating a formaldehyde solution comprising 30 wt% or more formaldehyde to a temperature ranging from about 70C to about 130C; aging the formaldehyde solution for a sufficient...  
WO/2020/054374A1
The purpose of the present invention is to provide a polyacetal resin composition which exhibits improved strength and long term heat resistance without compromising heat resistance quality such as the amount of formaldehyde generated up...  
WO/2020/054730A1
A polyoxymethylene which is characterized in that the ratio of low-molecular-weight components having a molecular weight of 10,000 or less is 7.0% or less of the entirety in the molecular weight distribution thereof as determined by gel ...  
WO/2020/050082A1
The purpose of the present invention is to provide: a novel polyacetal copolymer which is excellent in terms of production efficiency and mechanical property due to introduction of a group having a new structure; and a production method ...  
WO/2020/026781A1
The present invention, in one aspect, provides a method for producing an oxymethylene copolymer which gives molded articles that are inhibited from emitting formaldehyde and can be reduced in yellowness. In producing an oxymethylene copo...  
WO/2020/011993A1
An oligomeric resin adduct, compositions comprising the oligomeric resinadduct, and process for making oligomeric resin adduct, wherein the the process includes charging into a reactor a mixture including a vinylic monomer that includes ...  
WO/2020/011873A1
The present invention relates to a method for the deactivation of an acid catalyst during the production process of a polyoxymethylene copolymer (cPOM) by adding triisopropanolamine (tris(2-hydroxypropyl)amine) to a mixture which compris...  
WO/2019/244477A1
Provided is a polyacetal resin composition capable of minimizing degradation when a molded body thereof comes into contact with an acidic detergent. The present invention provides a polyacetal resin composition containing, with respect t...  
WO/2019/187984A1
The purpose of the present invention is to provide a method for producing a polyacetal copolymer, in which any disturbances in mass production less affect the polymerization. The method is for producing a polyacetal copolymer from trioxa...  
WO/2019/173753A1
A method of producing dimethoxymethane oligomers (DMMn), the method comprising: reacting a formaldehyde source and dimethoxymethane monomer (DMM1) in the presence of an acidic catalyst to produce a reaction effluent comprising DMMn and u...  
WO/2019/167464A1
The purpose of the present invention is to provide a polyacetal copolymer and a polymerization method having excellent production stability and heat stability such as the amount of formaldehyde generated while maintaining the level of ri...  
WO/2019/149597A1
Process for the removal of volatile compounds from a tackifier comprising a resin with repeating units of formula I wherein R1 is a linear or branched alkylen group with 1 to 10 carbon atoms and R2 is a linear or branched, saturated or u...  
WO/2019/092619A1
Long chain branched polyoxymethylene-polydimethylsiloxane copolymers are described. The copolymers have excellent impact properties, shear thinning and slip wear properties in comparison to a polyoxymethylene polymer not containing polyd...  
WO/2019/092617A1
Polyoxymethylene-polydimethylsiloxane block copolymers are disclosed. In one embodiment, the siloxane monomer used to make the polymer is soluble in the polyoxymethylene monomers, namely trioxane. The polymer can be formed having relativ...  
WO/2019/053976A1
The present invention addresses the problem of providing a method for manufacturing an oxymethylene copolymer in which the amount of formaldehyde generated from a product thereof is reduced; in particular, the amount of formaldehyde gene...  
WO/2019/012876A1
The present invention provides a method for producing a polyacetal fiber that presents an improved whiteness unevenness. According to one embodiment, there is provided a polyacetal fiber production method that yields a polyacetal fiber u...  
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/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/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/2016/040293A1
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...  

Matches 1 - 50 out of 2,136