Patents
Patents for C08G 2 - Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances (1,915)
06/2001
06/14/2001WO2001042357A1 Branched polyacetal resin composition
06/14/2001WO2001042326A1 Polyacetal copolymer
06/07/2001WO2001040376A1 Branched polyacetal resin composition
06/07/2001WO2001040375A1 Branched polyacetal resin composition
05/2001
05/30/2001CN1066463C Process for producing stabilized oxymethylene copolymer
05/16/2001CN1295585A Polyoxymethylene moulding material with improved processing stability and reduced emissions tendency
05/15/2001US6232507 Preparing formaldehyde from methanol by dehydrogenation in reactor at specified temperature in presence of catalyst introduced into reactor with carbon-free carrier gas, separating formaldehyde, recirculating remaining gas mixture
05/08/2001US6229053 Via scrubbing with cyclohexanol in absorption unit forming the hemiformal, converting impurities to gaseous state, then thermally cleaving in a pyrolysis unit; preparing oligomers, dyestuffs, fertilizers, and seed treatments
04/2001
04/25/2001CN1064982C Polyacetal resin composition with good ageing-resistant characteristics
04/11/2001EP1090051A1 Polyoxymethylene moulding material with improved processing stability and a reduced emissions tendency
03/2001
03/29/2001WO2001021326A1 Water-soluble coating agents bearing initiator groups and coating process
02/2001
02/15/2001WO2001010952A1 Low-emission coloured polyoxymethylene moulding material
02/15/2001WO2001010934A1 Block copolymer having polymer segment derived from oxazoline
02/15/2001DE19936715A1 Emissionsarme eingefärbte Polyoxymethylen-Formmassen Low-emission colored polyoxymethylene molding compositions
02/15/2001CA2381042A1 Block copolymers having a polymer segment derived from oxazoline
02/08/2001WO2001009213A1 Polyacetal block copolymer
02/07/2001CN1061664C Thermally stable polyoxymethylene copolymer
02/07/2001CN1061641C Process for preparing paraformaldehyde
01/2001
01/31/2001CN1281867A Production method of keto-aldehyde resin
01/24/2001EP1070755A1 Liquid mixture consisting of diesel gas oils and oxygenated compounds
01/18/2001WO2001004171A1 Method of terminating oxymethylene polymerization
01/11/2001WO2001002453A1 Low-molecular oxymethylene polymer and composition thereof
01/03/2001EP0865454B1 Addition of amine to improve paraformaldehyde
01/02/2001US6169164 Directly upstream of grinding assembly, feeding back portion of deactivation suspension which comprises both deactivation medium and crude polymer which has already been ground
12/2000
12/28/2000WO2000078866A1 Polyacetal resin composition__________________________________
12/28/2000CA2346465A1 Polyacetal resin composition__________________________________
12/27/2000EP1062195A1 Method for non-oxidative production of formaldehyde from methanol
12/13/2000CN1276803A Copolymerization of formaldehyde and cyclic ethers using initiators based upon tetraphenyl borates
12/13/2000CN1276372A Trioxane storage method, polyformaldehyde resin obtained by polymerization thereof and producing process thereof
11/2000
11/15/2000EP1052260A1 Trimerisation of formaldehyde in the gas phase
11/09/2000DE19920830A1 Trimerisierung von Formaldehyd in der Gasphase Trimerization of formaldehyde in the gas phase
11/07/2000US6143930 Employing a multiple distillation process coupled with an optional extraction of acetaldehyde in manufacture of high purity acetic acid
10/2000
10/31/2000US6139804 Process for production of polyoxymethylene
10/10/2000US6130280 High-rigidity oxymethylene polymer resin molding
09/2000
09/21/2000WO2000055227A1 Polyacetal copolymer and method for producing the same
09/21/2000WO2000012471A8 Method for the non-oxidative production of formaldehyde from methanol
09/13/2000EP1034202A1 Co-polymeric compounds comprising one or more active aldehyde monomeric unit
09/05/2000US6114434 Water-dilutable resins, process for preparing them, and their use
08/2000
08/17/2000WO2000047646A1 Process for continuously producing polyacetal resin
08/16/2000EP1027318A1 Method for purification of formaldehyde, use thereof and plastics produced therewith
08/09/2000EP1025139A1 Copolymerization of formaldehyde and cyclic ethers using initiators based upon tetraphenyl borates
08/03/2000WO2000009578A9 Method and materials for fabrication of alumoxane polymers
07/2000
07/27/2000WO2000029548A3 Coupled peptides
07/19/2000EP1019444A1 Glyoxylic compound comprising one or more active ingredient
06/2000
06/28/2000EP0925316B1 New polymer acetals from hydroxycarboxylic acids and the derivatives thereof and process for the production thereof
06/21/2000CN1053679C Process for producing acetal copolymer
06/08/2000WO2000032709A1 Substance for bonding, coating and sealing, consisting of cyanoacrylates and aldehyde or ketone condensation products
06/08/2000DE19957677A1 Cyanoacrylate adhesive, coating or sealing material, especially for porous substrates such as paper, contains cyanoacrylate and condensation product of aldehyde or ketone with polyol
06/08/2000CA2353605A1 Substance for bonding, coating and sealing, consisting of cyanoacrylates and aldehyde or ketone condensation products
06/06/2000US6072021 Copolymerization of formaldehyde and cyclic ethers using initiators based upon tetraphenyl borates
05/2000
05/31/2000EP1003799A1 Process for copolymerization of formaldehyde with cyclic ethers in the presence of organic nitro compounds
05/25/2000WO2000029548A2 Coupled peptides
05/25/2000CA2345934A1 Coupled peptides
05/10/2000EP0999224A1 Process for the preparation of polyacetal copolymers
05/09/2000US6060571 Time-release agents comprising a polyether copolymer of acrolein and a dihydric alcohol for use in aqueous systems to obtain a prolonged microbiocidal effect on microorganisms; algicides; paints; coatings; adhesives; leather; wood textiles
05/03/2000CN1251799A Materials for production of stable polyoxymethylene copolymer and method for producing the same copolymer from the same materials
04/2000
04/19/2000EP0994135A1 Process for the preparation of thermally stable polyoxymethylene copolymers
03/2000
03/30/2000WO2000017247A1 Polyoxymethylene copolymer and composition thereof
03/29/2000EP0988270A1 Method for producing formaldehyde from methanol in a non-oxidating manner
03/29/2000EP0988269A1 Method for producing formaldehyde from methanol
03/29/2000CN1248990A Process for stabilizying oxymethylene copolymer
03/22/2000EP0986528A1 Method for producing formaldehyde from methanol in a non-oxidating manner
03/22/2000CN1050614C Method of stabilizing molecular ends of oxymethylene copolymer
03/14/2000US6037439 Process for continuous production of polyacetal resin
03/09/2000WO2000012471A1 Method for the non-oxidative production of formaldehyde from methanol
03/08/2000CA2274380A1 Process for the preparation of thermally stable polyoxymethylene copolymers
03/08/2000CA2274377A1 Process for the preparation of polyacetal copolymers
03/02/2000DE19839740A1 Verfahren zur nicht-oxidativen Herstellung von Formaldehyd aus Methanol A process for the nonoxidative preparing formaldehyde from methanol
02/2000
02/29/2000US6031132 Amide-group-containing polyacetal and its production process and use
02/24/2000WO2000009578A1 Method and materials for fabrication of alumoxane polymers
02/24/2000DE19838182A1 Cationically initiated preparation of oxymethylene copolymer molding materials useful in automobile construction and in the electronics industry
02/22/2000CA2007741C Diphosphine type catalyst compositions
02/15/2000US6025309 Polymeric acetals of hydroxycarboxylic acids and their derivatives, and a process for their preparation
02/03/2000WO2000005285A1 Copolyacetal
01/2000
01/11/2000US6012349 Compatible polymeric means for communicating power and motion
12/1999
12/29/1999EP0967194A1 Preparation of di-tert-peroxides
12/08/1999EP0962475A1 Amidated polyacetals, process for producing the same, and use thereof
12/08/1999EP0682661B1 Resinous binder compositions
12/01/1999CN1046951C Resinous binder compositions
11/1999
11/30/1999US5994455 Process for the preparation of thermally stable polyoxymethylene copolymers
11/25/1999DE19815663A1 Polyoxymethylen-Formmasse mit verbesserter Verarbeitungsstabilität und verminderter Emissionsneigung Polyoxymethylene molding composition having improved processing stability and reduced emission tendency
11/03/1999CN1234019A Removal of permanganate reducing compounds and alkyl iodides from a carbonylation process stream
10/1999
10/26/1999US5973081 Modified polyacetal and method of producing the same
10/21/1999WO1999052959A1 Polyoxymethylene moulding material with improved processing stability and a reduced emissions tendency
10/21/1999CA2327827A1 Polyoxymethylene moulding material with improved processing stability and a reduced emissions tendency
10/13/1999CN1045612C Process for producing stabilized oxymethylene copolymer
10/05/1999US5962623 Process for the preparation of polyacetal copolymers
10/05/1999US5962582 Hydrophilic synthetic resins, esterified for stability to hydrolysis, which are particularly suitable for aqueous systems
09/1999
09/22/1999EP0789040B1 Process for producing polyoxymethylene
09/16/1999WO1999046228A1 Method for non-oxidative production of formaldehyde from methanol
09/16/1999DE19810087A1 Catalyst exhaustion in non-oxidative catalytic preparation of formaldehyde by methanol dehydration using carbon-free carrier gas
09/08/1999CN1227852A Process for preparing polyformol copolymer composition
09/07/1999US5948841 Process for production of stabilized oxymethylene copolymer
08/1999
08/24/1999US5942595 Copolymerizing formaldehye with a slurry comprising particles of polyoxymethylene polymer or copolymer suspended in a hydrocarbon solvent having dissolved within it one or more cyclic ethers and organonitrogen compound as catalyst
08/11/1999EP0934243A2 Removal of permanganate reducing compounds and alkyl iodides from a carbonylation process stream
07/1999
07/27/1999US5929195 Process for producing branched or crosslinked polyacetal resin
06/1999
06/30/1999EP0925316A1 New polymer acetals from hydroxycarboxylic acids and the derivatives thereof and process for the production thereof
06/29/1999US5917094 Acrolein-releasing emulsion homopolymers
06/24/1999WO1999031156A1 Amidated polyacetals, process for producing the same, and use thereof
05/1999
05/14/1999WO1999023054A1 Method for purification of formaldehyde, use thereof and plastics produced therewith
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