Patents by Inventor Dieter Fischer
Dieter Fischer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 5380797Abstract: This invention relates to high impact strength polymer blends containing at least two two-phase or multiphase polymers P1 and P2, which in turn contain at least one toughening phase A1 or A2 and at least one hardness phase B1 or B2. B1 and B2 differ in chemical structure and are thermodynamically compatible with one another. The polymer blend optionally contains another thermoplastic polymer B'3 and/or another two-phase or multiphase polymer P4 contain at least one toughening phase A4 and at least one hardness phase B4, provided that B'3 and/or B4 are different from B1 and B2 and are thermodynamically compatible with B1 and B2.Type: GrantFiled: December 14, 1992Date of Patent: January 10, 1995Assignee: Rohm GmbH Chemische FabrikInventors: Werner Siol, Jens-Dieter Fischer, Ulrich Terbrack, Klaus Koralewski
-
Patent number: 5374487Abstract: The invention relates to compatible PM polymer blends with polyesters as mix components, which compriseA) 0.1 to 99.9 wt % of a P1 polyester synthesized from units of formula I ##STR1## where R stands for a group --(CH.sub.2).sub.m -- or for a group ##STR2## and where m stands for a number from 2 to 6, andB) 99.9 to 0.1 wt % of a P2 polyester synthesized to 20-100 wt % from halogen-free monomers of formula II ##STR3## where R.sub.1 stands for hydrogen or methylR.sub.2 stands for a spacing group having 1-6 monomers,R.sub.3 stands for an alkyl group, alkoxy group or aminoalkyl- or dialkyl group having 1 to 6 carbon atoms andq stands for zero or one andz stands for zero, one or two.Type: GrantFiled: July 6, 1993Date of Patent: December 20, 1994Assignee: Rohm GmbHInventors: Werner Siol, Jens-Dieter Fischer, Thomas Sufke, Erwin Felger, Klaus Frank
-
Patent number: 5342691Abstract: The invention relates to a coated substrate comprising:A) 0.1-99.9 wt. % of a polyester-polycarbonate mixture comprised of:a.1) 0.1-99.9 parts by weight (pbw) of a polyester, anda.2) 99.9-0.1 pbw of a polycarbonate; andD) 99.9-0.1 wt.% of:a copolymer comprised ofd.1) 99-50 pbw of units of a monomer of formula I ##STR1## where R.sub.1 represents hydrogen or methyl, R.sub.2 represents hydrogen, a C.sub.1-6 alkyl group or a group --(CH.sub.2).sub.n --QR.sub.3,where n represents zero or a number in the range of 2-6, andQ represents oxygen or a group --NR.sub.4, andR.sub.3 and R.sub.4 each independently represent hydrogen or a C.sub.1-4 alkyl; andA represents a C.sub.1-4 alkylidene group or a group --(CH.sub.2).sub.m --O--,where m is a number from 2 to 6, andq is zero or 1;d.2) 1-50 pbw of units of a comonomer with UV-absorbing groups,a mixture comprised of:d.3) a polymer comprising 99-50 pbw of units of a monomer of formula I as described above, andd.Type: GrantFiled: March 18, 1993Date of Patent: August 30, 1994Assignee: Rohm GmbH Chemische FabrikInventors: Jens-Dieter Fischer, Werner Siol
-
Patent number: 5250623Abstract: The invention relates to compatible PM polymer blends with polyesters as mix components, which compriseA) 0.1 to 99.9 wt % of a Pi polyester synthesized from units of formula I ##STR1## where R stands for a group --(CH.sub.2)m-- or for a group ##STR2## and where m stands for a number from 2 to 6, and B) 99.9 to 0.1 wt % of a P2 polyester synthesized to 20-100 wt % from halogen-free monomers of formula II ##STR3## where R.sub.1 stands for hydrogen or methylR.sub.2 stands for a spacing group having 1-6 members,R.sub.3 stands for an alkyl group, alkoxyl group or aminoalkyl- or dialkyl group having 1 to 6 carbon atoms andq stands for zero or one andz stands for zero, one or two.Type: GrantFiled: July 10, 1991Date of Patent: October 5, 1993Assignee: ROHM GmbHInventors: Werner Siol, Jens-Dieter Fischer, Thomas Sufke, Erwin Felger, Klaus Frank
-
Patent number: 5239001Abstract: The invention relates to ternary polymer alloys comprised of thermoplastic polymers which alloys are comprised of the following components:A) 0.1-99.9 wt. % of a polyester-polycarbonate mixture comprised of:a.1) 0.1-99.9 parts by weight (pbw) of a polyester, anda.2) 99.9-0.1 pbw of a polycarbonate; andB) 99.9-0.1 wt. % of a poly(meth)acrylate ester PA containing 20-100 pbw of units of at least one monomer of formula I ##STR1## where R.sub.1 represents hydrogen or methyl, R.sub.2 represents hydrogen a C.sub.1-6 alkyl group or a group --(CH.sub.2).sub.n --QR.sub.3,wheren represents zero or a number in the range 2-6, andQ represents oxygen or a group --NR.sub.4, andR.sub.3 and R.sub.4 mutually independently represent hydrogen or a C.sub.1-4 alkyl group; andA represents a C.sub.1-4 alkylidene group or a group --(CH.sub.2).sub.m --O--,wherem is a number from 2 to 6, andq is zero or 1 wherein the sum of the wt. % of components (A) and (B) is 100% and the sum of the pbw figures of components (a.1) and (a.Type: GrantFiled: August 29, 1991Date of Patent: August 24, 1993Assignee: Rohm GmbH Chemische FabrikInventors: Jens-Dieter Fischer, Werner Siol
-
Patent number: 5236557Abstract: Aqueous solutions which are contaminated by hydrogen sulfide, hydrogen cyanide, and ammonia are brought to a pH of about 3 or less after their formation and treated with an inert gas in a stripping column to remove the sulfide and cyanide. The pH of the solution is then increased to about 10 or more and the solution is again treated with an inert gas in a second stripping column to remove the ammonia.Type: GrantFiled: December 18, 1991Date of Patent: August 17, 1993Assignee: Hoechst AktiengesellschaftInventors: Thomas Muller, Rolf-Dieter Fischer, Ulrich Gerhardus, Norbert Leder, Klaus Poloszyk, Peter Schneller, Wolfgang Brunke
-
Patent number: 5232986Abstract: The invention relates to polymer blends, which can be processed like a thermoplastic, whose bulk A) (50 to 90 wt. %) is polymethylmethacrylate or a polymethacrylate resin; and which also contain 5 to 40 wt. % of, as component B), a tough polymer, in particular an ABS polymerizate; and contain 5 to 40 wt. % of, as component C), a polycarbonate or a polyester carbonate. By adding component C), the heat resistance, impact strength and notched impact strength are improved in the known polymethacrylate/ABS blends. With the addition of an impact modifying component D), contained in quantities of 0 to 20 wt. % in the polymer blend, the impact strength and notched impact strength can be further raised. Preferably, recycled polymers can be added as the polymeric mix components.Type: GrantFiled: November 12, 1992Date of Patent: August 3, 1993Assignee: Rohm GmbH Chemische FabrikInventors: Jens-Dieter Fischer, Rudolf Blass, Uwe Numrich, Werner Siol
-
Patent number: 5219935Abstract: A composition universally usable as an impact modifier for synthetic resins comprising(A) from 10 to 80 percent by weight of a polymer of the formula ##STR1## wherein R.sub.1 is hydrogen or methyl, R.sub.2 is C.sub.5 -C.sub.7 cycloalkyl or such cycloalkyl substituted by C.sub.1 -C.sub.12 alkyl, y has a value such that the corresponding monomer or monomers are from 5 to 50 percent by weight of polymer (A), and x has a value such that the corresponding monomer, together with up to 20 percent by weight of one or more optional comonomers, is the balance by weight, and(B) from 20 to 90 percent by weight of an optionally crosslinked polymer having a glass transition temperature, T.sub.g, below 10.degree. C. and preferably less than -10.degree. C., polymer (B) being at least partially bonded covalently to polymer (A).Type: GrantFiled: December 21, 1989Date of Patent: June 15, 1993Assignee: Rohm GmbHInventors: Werner Siol, Jens-Dieter Fischer, Klaus Koralewski, Ulrich Terbrack
-
Patent number: 5218050Abstract: Compatible polymer blends containing0.5-99.5 wt. %, preferably 50 to 90 wt. % of a polyphenylene ether, synthesized from units of formula (I) ##STR1## where R.sub.1 stands for an optionally substituted cycloalkyl group or alkoxyl group having 1 to 8 carbon atoms or an optionally substituted aryl group having 6 to 10 carbon atoms or for chlorine,where R.sub.2 stands for an optionally substituted cycloalkyl group or alkoxyl group having 1 to 8 carbon atoms or an optionally substituted aryl group having 6 to 10 carbon atoms or for chlorine, andB) 99.5-0.5 wt. %, preferably 50 to 10 wt. % of a polyaryl(meth)acrylate containing 20-100 wt. % of monomers of the formula (II) ##STR2## where R.sub.3 stands for hydrogen or methyl, Q stands for an alkylidene group having 1 to 6 carbon atoms or a group --(CH.sub.2).sub.m --O--, where m denotes a number from 2 to 6,x stands for zero or 1 andR.sub.Type: GrantFiled: June 20, 1991Date of Patent: June 8, 1993Assignee: Rohm GmbH Chemische FabrikInventors: Jens-Dieter Fischer, Werner Siol
-
Patent number: 5209986Abstract: Polymer blends comprising:(A) 99.5-0.5 wt. % of a copolymer comprising:a1) 50-99 wt. % of C.sub.1 -C.sub.10 -alkyl- or C.sub.5 -C.sub.8 -cycloalkylethacrylates or mixtures thereof,a2) 0.5-20 wt. % of maleic acid anhydride or fumaric acid anhydride or maleimide, anda3) 0.5-40 wt. % of vinyl aromatics which may be unsubstituted or substituted on the aromatic ring with 1 or 2 alkyl groups of 1 to 4 carbon atoms; and(B) 0.5-99.5 wt. % of a copolymer comprising:b) 99.5-50 wt. % of styrene and/or .alpha.-methyl styreneb2) 0.5-50 wt. % of acrylonitrile and/or methacrylonitrile;provide thermoplastic transparent molding compositions.Type: GrantFiled: April 16, 1992Date of Patent: May 11, 1993Assignee: Rohm GmbH Chemische FabrikInventors: Jers-Dieter Fischer, Thomas Rhein, Manfred Stickler
-
Patent number: 5189100Abstract: Polymer blends comprising:(A) 99.5-0.5 wt. % of a copolymer comprising:a1) 50-99 wt. % of C.sub.1 -C.sub.10 -alkyl- or C.sub.5 -C.sub.8 -cycloalkylmethacrylates or mixtures thereof,a2) 0.5-20 wt. % of maleic acid anhydride or fumaric acid anhydride or maleimide, anda3) 0.5-40 wt. % of vinyl aromatics which may be unsubstituted or substituted on the aromatic ring with 1 or 2 alkyl groups of 1 to 4 carbon atoms; and(B) 0.5-99.5 wt. % of a copolymer comprising:b1) 99.5-50 wt. % of styrene and/or .alpha.-methyl styreneb2) 0.5-50 wt. % of acrylonitrile and/or methacrylonitrile;provide thermoplastic transparent molding compositions.Type: GrantFiled: April 30, 1991Date of Patent: February 23, 1993Assignee: Rohm GmbH Chemische FabrikInventors: Jens-Dieter Fischer, Thomas Rhein, Manfred Stickler
-
Patent number: 5135985Abstract: Homogeneous polymer mixtures of polymethacrylimides consist of a component (A), composed of from 30 to 90 percent by weight of methacrylalkylimide units and from 3.5 to 10 percent by weight of methacrylic acid units, and of a component (B1) or (B2) having from 10 to 50 percent by weight more methacrylalkylimide units than component (A), component (B1) having a degree of imidization of less than 95 percent and containing from 3.5 to 10 percent by weight of methacrylic acid units, and component (B2) having a degree of imidization greater than 95 percent and containing less than 3.5 percent by weight of methacrylic acid units.Type: GrantFiled: May 10, 1991Date of Patent: August 4, 1992Assignee: Rohm GmbHInventors: Werner Hoess, Heinz Vetter, Jens-Dieter Fischer, Hartmut Schikowsky
-
Patent number: 5132910Abstract: A method and arrangement for aligning a space vehicle with respect to a reference object is disclosed. A measuring direction is obtained by determining the angular orientation direction of the space vehicle with respect to the reference object and subsequently the space vehicle is aligned by means of actuators such that the measuring direction corresponds to a reference direction on the space vehicle. The actuators are driven by control signals which are derived from the measuring direction to cause control torques on the space vehicle. The orientation of the space vehicle and reference object is determined only with respect to a single measuring direction along a main axis of a direction sensor.Type: GrantFiled: July 11, 1990Date of Patent: July 21, 1992Assignee: Messerschmitt-Bolkow-Blohm GmbHInventors: Arnold Scheit, Horst-Dieter Fischer
-
Patent number: 5063112Abstract: Multi-layer plastic elements containing a polycarbonate core, with a polymethacrylate layer containing a UV absorber, and modified to be impact-resistant, applied to the core, where the polymethacrylate plastic layer is composed of methacrylate copolymers, which form compatible mixtures with polycarbonate, especially the polycarbonate of bisphenol A, exhibit good adhesion between the polycarbonate and the polymethacrylate. The methacrylate copolymers are methyl methacrylate copolymers with (meth)acrylic monomers which contain carbocyclic substituents in the ester group. The protective layer containing UV absorber is applied to the polycarbonate plastic in thickness from 1 to 500 .mu.m by coextrusion or by lacquering.Type: GrantFiled: November 6, 1989Date of Patent: November 5, 1991Assignee: Rohm GmbH Chemische FabrikInventors: Heinz Gross, Jens-Dieter Fischer, Werner Siol, Thomas Sufke, Thomas Rhein
-
Patent number: 5061558Abstract: Multilayered plastic objects are prepared having a core layer of an aromatic polycarbonate in contact with a polymethacrylate film containing a UV absorber. The polymethacrylate film comprises a copolymer of methylmethacrylate and an acrylic or methacrylic ester, (meth)acrylamide, maleimide or mixtures thereof and is compatible with said aromatic polycarbonate at all mixing ratios.Type: GrantFiled: November 6, 1989Date of Patent: October 29, 1991Assignee: Rohm GmbH Chemische FabrikInventors: Jens-Dieter Fischer, Manfred Munzer, Ursula Golchert, Felix Schinzel
-
Patent number: 4997883Abstract: An impact resistance modifier for polycarbonate, which is a copolymer, comprising an elastomer and a methyl methacrylate copolymer, which are bonded covalently. The methyl methacrylate copolymer is one that is compatible by itself with polycarbonate resin due to specific comonomers. Such comonomers are aromatic (meth)acrylic esters and (meth)acrylamides, cycloalkyl(meth)acrylamides and cycloalkylmaleimides. Thermoplastic molding compounds comprising polycarbonate and the new impact resistance modifier exhibit excellent impact resistance.Type: GrantFiled: February 3, 1989Date of Patent: March 5, 1991Assignee: Rohm GmbH Chemische FabrikInventors: Jens-Dieter Fischer, Werner Siol, Manfred Munzer, Thomas Rhein
-
Patent number: 4950716Abstract: This invention concerns transparent polymer mixtures that can be processed thermoplastically consisting of (A) polycarbonates, particularly Bisphenol A polycarbonates, and (B) copolymers of methyl methacrylate and 5 to 40 wt. % of N-substituted maleimides, with the substituent on the imide nitrogen being an optionally substituted cyclohexyl group, in which the copolymer (B) can also be made up of other .alpha.,.beta.-unsaturated monomer units in amounts of 0 to 40 wt. %.Type: GrantFiled: April 10, 1989Date of Patent: August 21, 1990Assignee: Rohm GmbH Chemische FabrikInventors: Jens-Dieter Fischer, Winfried Wunderlich, Werner Siol
-
Patent number: 4906699Abstract: A composition universally usable as an impact modifier for synthetic resins comprising(A) from 10 to 80 percent by weight of a polymer of the formula ##STR1## wherein R.sub.1 is hydrogen or methyl, R.sub.2 is C.sub.5 -C.sub.7 cycloalkyl or such cycloalkyl substituted by C.sub.1 -C.sub.12 alkyl, y has a value such that the corresponding monomer or monomers are from 5 to 50 percent by weight of polymer (A), and x has a value such that the corresponding monomer, together with up to 20 percent by weight of one or more optional comonomers, is the balance by weight, and(B) from 20 to 90 percent by weight of an optionally crosslinked polymer having a glass transition temperature, T.sub.g, below 10.degree. C. and preferably less than -10.degree. C., polymer (B) being at least partially bonded covalently to polymer (A).Type: GrantFiled: December 13, 1988Date of Patent: March 6, 1990Assignee: Rohm GmbHInventors: Werner Siol, Jens-Dieter Fischer, Klaus Koralewski, Ulrich Terbrack
-
Patent number: 4906696Abstract: Transparent, thermoplastically processable polymer blends of (A) polycarbonates, especially Bisphenol A polycarbonates, and (B) methyacrylate copolymers are disclosed. They are prepared from 95 to 5 wt. % methyl methacrylate and 5 to 95 wt. % methacrylic esters and optionally 0 to 30 wt. % especially 1 to 25 wt. % of an acrylic ester with carbocyclic groups in the ester group, and which can also contain other polymer building blocks in amounts of 0 to 40 wt. % formed from .alpha.,.beta.-unsaturated monomers.Type: GrantFiled: June 6, 1988Date of Patent: March 6, 1990Assignee: Rohm GmbH Chemische FabrikInventors: Jens-Dieter Fischer, Werner Siol
-
Patent number: 4783651Abstract: A linear D.C. gas discharge display is provided wherein light emissions resulting from the application of video pulse trains to a linear array of preionized illuminable gas discharge cells comprising the display are used for selective point to point exposure and discharge of a uniformly electrostatically charged photoconductive insulator to thereby produce a latent electrostatic charge image for development. Various embodiments are disclosed for conditioning and addressing the array of illuminable gas discharge cells.Type: GrantFiled: May 5, 1987Date of Patent: November 8, 1988Assignee: Ta Triumph-Alder AktiengesellschaftInventors: Dieter Fischer, Karl-Heinz Vatterott