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Edgar Leitz Patents
Inventor:
Leitz; Edgar
Address:
Dormagen, DE
No. of patents:
39
Patents:




Patent Number Title Of Patent Date Issued
7384576 Lead-free mixture as a radiation protection additive June 10, 2008
The present invention provides a mixture containing a) at least 26 wt. % of gadolinium and b) one or more elements, alloys and/or compounds from the group consisting of barium, indium, tin, lanthanum, molybdenum, niobium, tantalum, zirconium and tungsten, a process for the preparation
6806318 ABS molding materials with enhanced working properties October 19, 2004
Thermoplastic molding composition characterized in that the polymer proportion soluble in dichloromethane has a c.sub.50 value of acrylonitrile of .gtoreq.28 wt. % and a chemical distribution (c.sub.90 -c.sub.10 value) of the acrylonitrile of .gtoreq.5 wt. % is disclosed. The composi
6774166 Thermoplastic molding compounds August 10, 2004
A thermoplastic molding composition that features a combination of good notched impact strength and thermoplastic processability is disclosed. The composition contains one or more thermoplastic (co)polymers, a graft polymer and a combination of at least 3 components chosen from a compoun
6639000 ABS molding compositions having improved processability October 28, 2003
An additive mixture containing a dibenzoate and either or both of a compound containing at least one structural unit ##STR1##and a compound containing at least one structural unit ##STR2##is disclosed. The additive combination enhances the processability of a thermoplastic molding co
6140426 Graft polymer moulding compositions with reduced deposit formation October 31, 2000
The present invention relates to thermoplastic graft polymer moulding compositions for high-gloss applications, which exhibit a reduced tendency of the additives to exude out of the thermoplastic composition during processing, and which exhibit reduced deposit build-up in the mould.
5994463 Polycarbonate/graft polymer moulding compositions with reduced deposit formation November 30, 1999
Thermoplastic polycarbonate/graft polymer moulding compositions containingA) 5 to 95 parts by weight of an aromatic polycarbonate,B) 1 to 50 parts by weight of at least one thermoplastic homopolymer, copolymer or terpolymer of styrene, .alpha.-methylstyrene, acrylonitrile, N-substituted male
5883189 Thermoplastic high-gloss moulding compositions of the abs type March 16, 1999
Thermoplastic moulding compositions of the ABS type, containingI) at least one graft polymer, obtainable by emulsion polymerisation of resin-forming monomers in the presence of a mixture comprising a butadiene polymer latex (A) having a particle diameter d.sub.50 of .ltoreq.320 nm, a par
5804656 Compositions of the ABS type for processing by extrusion and deep drawing September 8, 1998
Compositions of the ABS type containingA) one or more graft rubbers ofA.1) from 10 to 60 parts by weight of one or more monomers onA.2) from 40 to 90 parts by weight of one or more rubber backbones having glass transition temperatures <0.degree.C. andB) at least one rubber-free thermoplastic
5741853 ABS moulding compositions with improved properties April 21, 1998
Thermoplastic moulding compositions of the ABS type ofI) at least one graft copolymer which is obtainable by emulsion polymerization of styrene and acrylonitrile in the weight ratio 90:10 to 50:50, wherein styrene and/or acrylonitrile can be completely or partly replaced by .alpha.-methy
5708079 Thermoplastic ABS moulding compositions January 13, 1998
Thermoplastic moulding compositions containingA) 5 to 95 parts by wt of at least one particle-shaped graft rubber polymer of the ABS type manufactured by emulsion polymerization, in which the graft rubber particles have such a structure detectable by transmission electron microscope phot
5696204 Thermoplastic moulding compositions of the ABS type December 9, 1997
Thermoplastic moulding compositions comprisingA) 1 to 60 parts by weight of at least one particulate graft rubber polymer of the ABS type which is produced by emulsion polymerisation, in which at least 50% of the graft rubber particles (number) have a structure detectable via transmissio
5674939 ABS moulding compounds with novel morphology October 7, 1997
Moulding compounds the ABS type consisting of at least one resin matrix and a particulate graft-rubber polymer distributed therein and produced by emulsion polymerisation, wherein at least 70% of the graft-rubber particles (number) exhibit a structure of the rubber phase which can be
5605963 ABS polymer compositions having a uniform matt surface February 25, 1997
ABS polymer compositions consisting ofA) 5 to 80 parts by weight of at least one ABS polymer prepared by mass polymerization or solution polymerization, having rubber particles with an average particle diameter of from 800 to 15,000 nm and a rubber content of from 1 to 20% by weight,B) 1
5420181 Composition of polycarbonate, ABS, a basic additive and a carboxylic and compound May 30, 1995
Thermoplastic molding compositions containingA) ABS-type resin,B) aromatic polycarbonate resins,C) a compound bearing several carboxyl groups or mixtures thereof and optionallyD) further polymer resins,characterized in that an ABS resin with at least one basically acting additive is used as
5162411 Carbonates, their production and their use as flow aids November 10, 1992
A carbonate corresponding to formula (I) ##STR1## in which R is aromatically bound polystyrene moiety and --O--D--O-- is a diphenolate moiety in which --D-- is a divalent group containing 6 to 30 carbon atoms and r is 0 or 1 is disclosed. The carbonate is useful as a flow aid for
5153291 Trialkylsilyloxy-1,1-diphenyl ethylenes and polymers produced therewith October 6, 1992
Trialkylsilyloxy-1,1-diphenyl ethylenes corresponding to general formula I, new polymers produced therewith terminated by aryl trialkylsilyl ether groups or by phenolic hydroxyl groups and a process for the production of these polymers by anionic polymerization ##STR1## in which
5116918 Crosslinked copolymers based on cyclic esters and carbonates May 26, 1992
Crosslinked copolymers ofA) cyclic aliphatic esters andB) cyclic aliphatic carbonatesin which part of B contains crosslinking-active side groups,their production and their use for the production of films.
5104935 Polymer mixture April 14, 1992
Polymer mixtures ofa. 10 to 60 parts by weight of a graft polymer,b. 10 to 50 parts by weight of a partially cross-linked, rubber like copolymer of from 5 to 40% by weight of acrylonitrile, styrene, alkyl methacrylate or mixtures thereof and from 95 to 60% by weight of alkyl acrylate hav
5084524 Block copolymers based on cyclic aliphatic carbonates and/or esters on the one hand and cyclic a January 28, 1992
Copolymers of blocks of polymers of cyclic aliphatic carbonates, cyclic aliphatic esters or cyclic aliphatic carbonates and cyclic aliphatic esters on the one hand and blocks of polymers of cyclic aromatic carbonates on the other hand and a process for their production by multistage
5071921 Thermoplastic block copolymers based on cyclic carbonates or esters December 10, 1991
Thermoplastic block copolymers of the idealized formulae (I)in whichand whereinA is the radical of a homopolymer of styrene, vinylnaphthalene, butadiene and isoprene, andB the radical of a homopolymer of a cyclic polycarbonate or lactone,the average molecular weight of blocks A and B being great
5064885 Stabilized aliphatic polycarbonates November 12, 1991
This invention relates to aliphatic polycarbonates including sequential copolymers based on cyclic aliphatic carbonates and esters and block copolymers of blocks of polymerised cyclic aliphatic carbonates and blocks of polymerised vinyl compounds stabilized against thermal degradation
5047480 Thermoplastic molding compositions September 10, 1991
Thermoplastic molding compositions containinga. from 1 to 99 parts by weight of a thermoplastic copolymer offrom 40 to 70 parts by weight methyl methacrylate, from 20 to 50 parts by weight .alpha.-methyl styrene and from 5 to 15 parts by weight acrylonitrile,b. from 1 to 99 parts by weight o
5010135 Moulding compounds of aromatic polyesters, vinyl copolymers and grafted silicone rubber April 23, 1991
Moulding compounds of fully aromatic polyesters, vinyl copolymers and grafted silicone rubber of a specified composition may be worked up into moulded products with excellent low temperature toughness and surface quality and very high resistance to stress cracking.
4999420 Polymerization of cyclic aromatic oligomers with low temperature aprotic organic solvent March 12, 1991
This invention relates to a process for the production of aromatic polycarbonates from cyclic aromatic carbonate oligomers in the presence of aprotic organic solvents at low temperatures.
4985493 Thermoplastic moulding compounds with low temperature toughness obtained from aromatic polyester January 15, 1991
The thermoplastic moulding compounds according to the invention obtained from aromatic polyester carbonates and special graft polymers have a very high weld-line strength as well as a high notched impact strength at room temperature and especially at low temperatures and may be used for
4965300 Sequential copolymers based on cyclic carbonates and esters October 23, 1990
Polymers having a sequential structure of the following formulawith r=1 to 20, in which --A-- is a polymer of a cyclic carbonate, --B-- is a polymer of a lactone and --X-- is a link, with a decreasing concentration of residues of the cyclic carbonate in the --B-- direction and a decreasi
4960822 Thermoplastic moulding compounds with good processing properties and great toughness October 2, 1990
Thermoplastic moulding compounds containing(A) from 5 to 90 parts by weight of one or more thermoplastic polymers,(B) from 5 to 90 parts by weight of one or more graft polymers and(C) from 0.25 to 40 parts by weight of a copolymer having a sequential structure corresponding to the idealized form
4959410 Polymer mixtures having high tensile strength and good tear propagation resistance September 25, 1990
Polymer mixtures having high tensile strength and good tear propagation resistance, consisting of(A) from 10 to 95 parts by weight of a graft polymer,(B) from 0 to 75 parts by weight of a thermoplastic resin component and(C) from 5 to 60 parts by weight of a copolymer having a sequence type of
4956485 Trialkylsilyloxy-1,1-diphenyl ethylenes and polymers produced therewith September 11, 1990
Trialkylsilyloxy-1,1-diphenyl ethylenes corresponding to general formula I, new polymers produced therewith terminated by aryl trialkylsilyl ether groups or by phenolic hydroxyl groups and a process for the production of these polymers by anionic polymerization ##STR1## in which
4912168 Thermoplastic molding compounds based on mixtures of vinyl chloride polymers and block copolymer March 27, 1990
Transparent vinyl chloride polymer molding compounds containing a sequential copolymer having the following idealized formulain whichA=a polymer of a cyclic carbonate,B=a polymer of another cyclic ester andX=a middle segment containing both partial structures of A and B.
4912161 Thermoplastic moulding compounds of great toughness and good processability in the molten state March 27, 1990
Thermoplastic moulding compounds containing(A) from 5-90 parts by weight of one or more thermoplastic polymers,(B) from 5-90 parts by weight of one or more graft polymers and(C) from 0.25-40 parts by weight of a blocked copolymer corresponding to the idealized formula (I) whereinA denotes the re
4908422 Thermoplastic molding compounds containing aliphatic polycarbonates March 13, 1990
The invention relates to thermoplastic molding compounds containing(1.) thermoplastic aromatic polycarbonates and/or thermoplastic aromatic polyesters,(2.) graft polymers and, optionally,(2.a) thermoplastic copolymers,which are characterized in that they additionally contain aliphatic polyca
4908416 Mixtures of aromatic polycarbonates and/or aromatic polyesters with special copolymers March 13, 1990
The invention relates to mixtures containing1. thermoplastic, aromatic polycarbonates and/or thermoplastic, aromatic polyesters and2. copolymers corresponding to formula (Ia)
4906688 Thermoplastic moulding compositions of the ABS type of improved toughness and processability March 6, 1990
Thermoplastic moulding compounds containing(A) from 5-90 parts by weight of one or more thermoplastic polymers,(B) from 5-90 parts by weight of one or more graft polymers and(C) from 0.25-40 parts by weight of a linear aliphatic polycarbonate.
4900797 Thermoplastic polycarbonate mixtures containing aliphatic February 13, 1990
The invention relates to thermoplastic polycarbonate mixtures containing aromatic polycarbonates and aliphatic polycarbonates and, optionally, stabilizers, pigments, mold release agents, flameproofing agents and/or antistatic agents. The invention also relates to a process for the pr
4900785 Thermoplastic molding compounds containing special copolymers February 13, 1990
The invention relates to thermoplastic molding compounds containing1. thermoplastic aromatic polycarbonates and/or thermoplastic aromatic polyesters,2. graft polymers,3. special copolymers corresponding to formula (Ia)and, optionally,2a. thermoplastic copolymers, stabilizers, pigments, mold rele
4882381 Moulding compounds of aromatic polyesters and grafted silicone rubber November 21, 1989
Moulding compounds prepared from fully aromatic polyesters and grafted silicone rubber of a specified composition can be worked up into moulded bodies with excellent low temperature toughness and uniform surface.
4774289 Thermoplastic moulding compositions of polycarbonate and terpolymers September 27, 1988
Thermoplastic moulding compositions containing:A. 1-99 parts by weight of an aromatic thermoplastic polycarbonate or several aromatic thermoplastic polycarbonates andB. 1-99 parts by weight of a thermoplastic compolymer of 30-40 parts by weight of .alpha.-methylstyrene, 50-60 parts by weight
4754017 Process for the preparation of linear aliphatic polycarbonate from cyclic aliphatic carbonate June 28, 1988
Process for the polymerization of cyclic aliphatic carbonates in the presence of aprotic organic solvents with exclusion of atmospheric oxygen and atmospheric moisture, wherein organometallic compounds of elements of main group 1 of the periodic table are used as initiators, the mono


 
 
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