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)
09/1988
09/21/1988CN87104972A Process for preparing oxymethylene polymers using boron trifluoride in admixture with an inert gas
09/20/1988US4772662 Disubstituted cellulose ether
08/1988
08/24/1988EP0279289A2 Continuous process for eliminating unstable components from raw oxymethylene copolymers
07/1988
07/19/1988US4758608 UV curable non-crystalline acetal terpolymers
07/14/1988DE3700052A1 Multi-piston internal combustion engine with common combustion chamber
06/1988
06/14/1988US4751272 Polymerizing trioxane and cyclic ether; boron trifluoride catalyst
05/1988
05/17/1988US4744934 Process for devolatilizing molten oxymethylene polymer
04/1988
04/06/1988EP0262260A1 Process for preparing thermally stable oxymethylene copolymers
04/05/1988CA1234947A1 Oxymethylene polymer molding compositions having enhanced impact resistance and articles molded therefrom
03/1988
03/29/1988US4734481 Polyphthaldehydes; photoresists
03/09/1988CN87104398A Improved polyacetal lighter body resin
02/1988
02/23/1988US4727132 Method of continuous manufacturing of polymers or copolymers of trioxane
01/1988
01/27/1988EP0254535A2 Process for preparing oxymethylene polymers using boron trifluoride in admixture with nitrogen
01/07/1988EP0251706A2 Improved polyacetal lighter body resin
12/1987
12/09/1987EP0248487A1 Process for the preparation of polyacetals
11/1987
11/17/1987US4707525 Oxymethylene polymer molding compositions having enhanced impact resistance and article molded therefrom
11/04/1987EP0244245A2 Process for producing oxymethylene copolymer and resinous composition
10/1987
10/13/1987CA1228191A1 Method of producing an improved polyacetal polymer
09/1987
09/15/1987CA1226989A1 Method for manufacturing polymer or copolymer of trioxane
09/09/1987EP0236261A2 Polymers containing organometallic derivatives
09/08/1987US4692505 Process for preparing oxymethylene polymers using boron trifluoride in admixture with an inert gas
09/08/1987US4692290 Process for devolatilizing molten oxymethylene polymer
09/08/1987CA1226698A1 Method of producing polyacetal polymer showing improved heat resistance and moldability
09/01/1987US4691000 Oxymethylene copolymers and process for their preparation
09/01/1987CA1226394A1 Method for manufacturing trioxane copolymer
08/1987
08/19/1987EP0232329A1 Perfluorinated polyether fluids.
07/1987
07/22/1987EP0229745A2 Substituted o-phthalaldehydes
07/21/1987US4681927 Trioxane, cyclic ether or formal, catalyst, multistage
07/08/1987CN86107755A Process for devolatilizing molten oxymethylene polymer
06/1987
06/23/1987US4675452 Lubricants
05/1987
05/27/1987EP0223537A2 Process for devolatilizing molten oxymethylene polymer
04/1987
04/28/1987US4661570 Method of continuous polymerization
04/08/1987EP0217560A1 Process for preparing polymer of formaldehyde
04/01/1987EP0216741A2 Process for preparing polymeric acetal carboxylates
03/1987
03/25/1987EP0215543A1 A new process for making polyesters, polyamides and polyketones
03/24/1987US4652613 Novel elastomer/oxymethylene polymer blends containing polymeric compatibilizing agents
01/1987
01/29/1987WO1987000538A1 Perfluorinated polyether fluids
11/1986
11/26/1986EP0202826A2 Continuous manufacturing of polymers or copolymers of trioxane
11/20/1986EP0201948A1 Oxymethylene copolymers and method for their preparation
11/11/1986US4622385 Method of producing polyacetal polymer showing improved heat resistance and moldability
10/1986
10/22/1986EP0198719A2 Method of continuous polymerization and apparatus therefor
07/1986
07/15/1986US4600750 Process for preparing polymeric acetal carboxylates
06/1986
06/03/1986US4593086 Preparation of aromatic ketone-sulfone copolymers
05/1986
05/06/1986US4587033 Polymeric acetal carboxylate compositions
04/1986
04/16/1986EP0178183A2 Preparation of aromatic ketone-sulfone copolymers
04/01/1986US4579935 Stereo-hindering phenols to monomer mixture; lewis acid catalysts or complexes
04/01/1986US4579720 Chelation
03/1986
03/04/1986US4574158 Acetal purification using phase transfer catalysts
02/1986
02/11/1986US4569983 High modulus
01/1986
01/29/1986EP0169826A1 Polymeric acetal carboxylate compositions
01/15/1986EP0167834A2 Metal-containing polyaldehyde microspheres
01/08/1986EP0167369A1 Oxymethylene polymer molding compositions having enhanced impact resistance and articles molded therefrom
12/1985
12/17/1985CA1198246A1 Process and apparatus for continual melt hydrolysis of acetal copolymers
10/1985
10/29/1985US4550213 Method of manufacture for paraformaldehyde prills
10/15/1985US4547565 Method for manufacturing trioxane copolymer
09/1985
09/17/1985US4542206 Process for preparing polymeric acetal carboxylate compositions
09/10/1985US4540773 Contercurrent flow with nonsoluble liquid
09/03/1985US4539387 Process for polymerizing formaldehyde
08/1985
08/13/1985US4535127 Polyacetal copolymers and process for production thereof
05/1985
05/08/1985EP0140099A2 Process for the production of heat-resistant, mouldable acetal polymer
04/1985
04/17/1985EP0137305A2 Method of producing an improved polyacetal polymer
03/1985
03/19/1985CA1184342A1 Method of continuous polymerization
03/12/1985US4504646 Positive type, radiation-sensitive organic polymer materials
03/12/1985US4504636 Process for preparation of formaldehyde copolymers
01/1985
01/29/1985CA1181889A1 Method for preparing polyacetals and polyketals by emulsion polymerization
01/15/1985US4493752 Separation of triethylamine and tioxane
01/15/1985US4493751 Reduced viscosity
12/1984
12/27/1984EP0129369A1 Method of manufacturing a copolymer of trioxane
12/19/1984EP0128739A1 Method of manufacturing a homopolymer or copolymer of trioxane
10/1984
10/16/1984CA1176395A1 Polyoxymethylene fibrids, a process for their production and their use
07/1984
07/03/1984US4458064 Process and apparatus for continual melt hydrolysis of acetal copolymers
05/1984
05/30/1984EP0109617A1 Positive type, radiation-sensitive organic polymer materials
05/16/1984EP0108324A1 Process for preparing polyoxymethylenes from formaldehyde
04/1984
04/03/1984US4440646 Hydroxy or haloalkanephosphonates
03/1984
03/13/1984US4436900 Process for deactivating polymerization catalyst
02/1984
02/14/1984US4431794 Continuous preparation of oxymethylene polymers
01/1984
01/24/1984US4427807 Glass reinforced poly(oxymethylene) composition having improved property retention
12/1983
12/20/1983CA1159192A1 Process for the production of high molecular weight oxymethylene copolymer in the presence of impurity
10/1983
10/26/1983EP0092319A1 Method for preparing polyacetals and polyketals by emulsion polymerization
10/25/1983US4412067 Process for the continuous polymerization or copolymerization of trioxane
10/11/1983US4409370 Thermoplastic blend of oxymethylene copolymers exhibiting improved impact resistance
09/1983
09/14/1983EP0088541A2 Process and apparatus for continual melt hydrolysis of acetal copolymers
08/1983
08/16/1983US4399272 Process for producing polyacetal copolymers
07/1983
07/20/1983EP0083698A1 Process for the continuous (co)polymerisation of trioxane
06/1983
06/08/1983EP0080656A1 Continuous process for producing oxymethylene polymers
04/1983
04/19/1983US4380620 Process for preparing polyoxymethylenes
04/19/1983US4380610 Polyacetal comb polymers
03/1983
03/22/1983US4377667 Encapping with an alkylene oxide adduct of an alcohol or carboxylic acid
03/15/1983CA1142968A1 Stabilization of liquid paraformaldehyde
02/1983
02/22/1983US4374953 Method for preparing polyacetals and polyketals by emulsion polymerization
01/1983
01/25/1983CA1140297A1 Process for continuously polymerizing trioxane
12/1982
12/28/1982US4366305 Process for heat stabilizing oxymethylene copolymers
11/1982
11/03/1982EP0063782A1 Process for recovering trioxane
10/1982
10/26/1982US4356071 Thermally stable polyoxymethylene containing polymers
10/19/1982US4355153 Quaternary ammonium lactamate catalyst
10/05/1982US4352923 Metal chelate adsorbed on polyoxymethylene glycol as catalyst
08/1982
08/10/1982US4343929 Process for continuously polymerizing trioxane
08/03/1982US4342680 Stabilized oxymethylene copolymer composition
07/1982
07/20/1982US4340720 Process for producing high-molecular polyacetals
07/13/1982US4339569 Bulk polymerization, boron trifluoride catalysts
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