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WO/2002/044298A1 |
A photoreaction-curable sealing material composition which is reduced in odor emission during the production, application, and curing of the product and which after curing is highly flexible at low temperatures. It comprises a (meth)acry...
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WO/2002/020663A2 |
Degradable polyacetal polymers and functionalized degradable polyacetal polymers have properties favorable for use in pharmaceutical and biomedical applications. The degradable polyacetal polymers are relatively stable at physiological p...
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WO/2002/008346A1 |
The invention relates to a method for coating substrates, comprising the following steps: a. applying a flowable coating agent to the substrate to be coated; and b. hardening the resulting wet coating using the effect of high-energy radi...
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WO/2001/058974A1 |
The invention relates to a continuous method for production of polyoxymethylene homo- or co-polymer by mass polymerisation of the monomers in the presence of cationic-effect initiators and, optionally, in the presence of regulators. Duri...
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WO/2001/042357A1 |
A polyacetal resin material which has excellent sliding properties imparted thereto and gives a molding improved in appearance, dimensional accuracy, mechanical properties, etc. The branched polyacetal composition comprises (A) 100 parts...
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WO/2001/042326A1 |
A resin material which has improved rigidity while retaining excellent properties inherent in a polyacetal resin, such as appearance, sliding properties, and thermal stability. The polyacetal copolymer is obtained by copolymerizing (A) 1...
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WO/2001/040376A1 |
A resin material which has improved weathering (light) stability while retaining excellent properties inherent in a polyacetal resin, such as appearance and rigidity. The branched polyacetal resin composition comprises 100 parts by weigh...
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WO/2001/040375A1 |
A resin material which has antistatic properties imparted thereto while retaining excellent properties inherent in a polyacetal resin, such as appearance and rigidity. The branched polyacetal resin composition comprises 100 parts by weig...
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WO/2001/021326A1 |
A method of forming a polymer layer on a support surface by the use of a coating agent and polymerizable compounds. The coating agent provides photoreactive groups adapted to attach the agent to the surface, as well as photoreactive grou...
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WO/2001/010952A1 |
The invention relates to moulding materials made of a polyacetal-copolymer. Said polyacetal-copolymer is essentially composed of oxymethylene and oxyethylene units and a strong protonic acid is used as an initiator during production. Sai...
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WO/2001/010934A1 |
A block copolymer represented by general formula (I). In the formula, AI represents hydroxy or an organic residue derived from an anionic polymerization initiator; R represents hydrogen or acyl; NP represents a residue derived from a nuc...
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WO/2001/009213A1 |
A polyacetal block copolymer of the ABA type which has in the backbone a liquid hydrogenated polybutadiene block in which both ends having a specific monomer structure have been hydroxyalkylated; and a polyacetal resin composition compri...
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WO/2001/004171A1 |
A polyoxymethylene having enhanced thermal stability and resistance to depolymerization is obtained by using an alkylated melamine compound of formula (1) as a polymerization terminating agent in a polymerization of formaldehyde or a cyc...
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WO/2001/002453A1 |
A low-molecular oxymethylene polymer which is linear and has a number-average molecular weight of 1,000 to 8,000, a molecular weight distribution (Mw/Mn) of 1.0 to 3.0, and a comonomer unit content of 0 to 30 mol%.
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WO/2000/078866A1 |
A polyacetal resin composition which has high rigidity and is excellent in surface hardness, sliding properties, etc. The composition comprises 100 parts by weight of a polyacetal resin (A) and 0.01 to 100 parts by weight of a branched p...
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WO/2000/055227A1 |
A polyacetal copolymer which is obtained by a method which comprises copolymerizing (a) 100 parts by weight of trioxan, (b) 0.05 to 20 parts by weight of a cyclic ether compound copolymerizable with trioxan and (c) 0.001 to 10 parts by w...
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WO/2000/047646A1 |
A process for continuously producing a polyacetal resin which comprises adding a comonomer to trioxane to conduct cationic polymerization in the presence of a specific silane compound. By the process, a high-quality polyacetal resin can ...
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WO2000009578A9 |
A composition of matter, comprising: a chemically functionalized carboxylate-alumoxane that is functionalized with a chemically reactive substituent, and a reactive compound, wherein the chemically reactive substituent reacts with the re...
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WO/2000/032709A1 |
Gel-forming condensation products of aldehydes or ketones can be used with polyols in cyanoacrylates to obtain dimensionally stable adhesives, coating and sealing substances. These are stable in storage and are especially suitable for bo...
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WO/2000/029548A2 |
The present invention is directed to a process for coupling an adhesive glycoprotein to a surface of a bulk material comprising the following steps: a) a layer of a volatile aldehyde is deposited to the surface of the bulk material from ...
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WO/2000/017247A1 |
A polyoxymethylene copolymer which has a melting point of 167 to 173 °C and a content of low-molecular polyoxymethylene copolymers of 5,000 ppm or lower; and a composition of the polyoxymethylene copolymer. The copolymer is obtained by ...
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WO/2000/012471A1 |
The invention relates to a method for producing formaldehyde by non-oxidative dehydrogenation of methanol in a reactor while using a fluid catalyst. After the reactor, the product gases are brought into contact with a melt in a cooler. S...
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WO/2000/005285A1 |
A copolyacetal which is obtained by copolymerizing (A) 100 parts by weight of trioxane with (B) 0.01 to 10 parts by weight of at least one compound selected among glycidyl ether compounds represented by general formulae (I), (II), and (I...
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WO/1999/052959A1 |
Moulding materials made of linear polyoxymethylene copolymers with essentially oxymethylene units and oxyethylene units as structural units in the polymer chain, whereby the proportion of oxyethylene units in the structural units of the ...
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WO/1999/046228A1 |
The invention concerns a method for producing formaldehyde from methanol by dehydrogenation in a reactor, in the presence of a catalyst which is input in the reactor by means of a carrier gas, at temperatures ranging between 300 to 1000 ...
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WO/1999/031156A1 |
Amidated polyacetals having acetal structural units (1) represented by general formula (1) in the molecule. These acetals are usable as detergent builders in detergent compositions. These polyacetals are produced via transamidation react...
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WO/1999/023054A1 |
The invention relates to a method for purifying formaldehyde, whereby the formaldehyde is rinsed with alcohol in an absorption unit and almost entirely converted to hemiformal while gaseous impurities are separated in a first purificatio...
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WO/1999/021903A1 |
This invention concerns a process for the copolymerization of formaldehyde with cyclic ethers, the process comprising combining in a hydrocarbon solvent a cyclic ether, a cationic initiator comprising an anion formed from tetraphenyl bor...
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WO/1999/016803A1 |
The present invention relates to co-polymeric compound comprising one or more active ingredient. By the present invention, a delayed release of the active ingredient is provided upon contact of the compound with an aqueous medium.
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WO/1999/016802A1 |
The present invention relates to copolymeric compound comprising one or more active ingredient. By the present invention, a delayed release of the active ingredient is provided upon contact of the compound with an aqueous medium.
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WO/1999/016804A1 |
The present invention relates to glyoxylic compound comprising one or more active ingredient. By the present invention, a delayed release of the active ingredient is provided upon contact of the compound with an aqueous medium.
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WO/1999/016801A1 |
The present invention relates to glyoxylic compound comprising one or more active ingredient. By the present invention, a delayed release of the active ingredient is provided upon contact of the compound with an aqueous medium.
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WO/1999/009082A1 |
Disclosed is a process for copolymerization of formaldehyde with cyclic ethers in the presence of organic nitro compounds. The process enhances the selectivity for the cyclic copolymer.
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WO/1998/055436A1 |
The invention relates to a method for producing formaldehyde from methanol by dehydration in a reactor in the presence of a catalyst at a temperature of between 300 and 1000 �C. Said method is characterized in that a circular gas curre...
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WO/1998/055434A1 |
The invention relates to a method for producing formaldehyde from methanol by dehydration in a reactor in the presence of a catalyst and at a temperature of between 300 and 1000 �C. Said method is characterized in that a current of car...
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WO/1998/055433A1 |
The invention relates to a method for producing formaldehyde from methanol by dehydrogenating methanol at a temperature of between 300 and 1000 �C in the presence of a catalytically active species released from a sodium compound. Said ...
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WO/1998/055435A1 |
The invention relates to a method for producing formaldehyde from methanol by dehydration in a reactor in the presence of a catalyst at a temperature of between 300 and 1000 �C. Said method is characterized in that the generation of th...
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WO/1998/042781A1 |
A process for stabilizing an oxymethylene copolymer, wherein an oxymethylene copolymer having a thermally unstable terminal is heat-treated in the presence of at least one quaternary ammonium compound represented by the following general...
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WO/1998/029483A1 |
A high-rigidity oxymethylene polymer resin molding prepared by molding an oxymethylene polymer resin selected from the group consisting of oxymethylene homopolymer resin, an oxymethylene copolymer resin which is a copolymer of oxymethyle...
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WO/1998/017619A2 |
Disclosed is a method to manufacture high purity acetic acid. Although described in relation to that produced by a low water carbonylation process the present invention is applicable to other mechanisms for production of acetic acid whic...
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WO/1998/011147A1 |
New polymer acetals from hydroxycarboxylic acids with the recurrent structural unit (I), wherein the substitutes and numbers in the description present the defined meaning. These polymer acetals are suited as base components for water so...
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WO/1997/039042A1 |
A polyacetal copolymer excellent in qualities such as heat stability is economically produced by a simple procedure through copolymerization wherein trioxane is used as the main monomer. In producing a polyacetal copolymer by copolymeriz...
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WO/1997/034941A1 |
Disclosed is a process to produce paraformaldehyde prills having a low dissolution time and low concentration of insoluble formation. The insolubles are believed to lead to stickiness, tackiness, and loss of flowability of the product, l...
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WO/1997/024384A1 |
A stable polyacetal resin is prepared by adding 0.001 to 1 part by weight of (B) a boric acid compound to 100 parts by weight of (A) a crude polyacetal copolymer having unstable terminal moieties, and melt-kneading the resulting mixture ...
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WO/1997/003100A1 |
A process for producing a polyacetal copolymer by copolymerizing trioxane as the principal monomer with a cyclic ether or cyclic formal having at least one carbon-carbon bond as the comonomer, wherein a heteropoly acid or an acidic salt ...
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WO/1996/034053A1 |
A resin composition comprising a thermoplastic resin and a modified polyacetal prepared by introducing a residue of a polymerizable compound having a functional group such as an epoxy, carboxyl or acid anhydride group in an amount of 0.1...
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WO/1996/023825A1 |
A process for producing a stabilized oxymethylene copolymer which comprises treating a crude oxymethylene copolymer in an extruder (A) equipped with an end-stabilizing zone and a vacuum devolatilizing zone to prepare an end-stabilized ox...
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WO/1996/013534A1 |
A process for producing polyoxymethylene by using a reactor wherein trioxane alone or a mixture thereof with a compound which can react with trioxane is fed through a feed port and the formed powdery polyoxymethylene is continuously reco...
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WO/1996/013535A1 |
A modified polyacetal obtained by heating 100 pts.wt. of a polyacetal component (A) together with 0.1 - 30 pts.wt. of a polymerizable compound (B) having a modifying group such as an epoxy, carboxyl or acid anhydride group to thereby int...
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WO/1996/006118A1 |
The present invention provides a method of carrying out the cationic polymerization of a monomer in carbon dioxide. The method includes the steps of (a) providing a reaction mixture comprising carbon dioxide, a monomer, a catalyst and a ...
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