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Rohm GmbH Chemische Fabrik Patents
Assignee:
Rohm GmbH Chemische Fabrik
Address:
Darmstadt, DE
No. of patents:
104
Patents:


1 2 3


Patent Number Title Of Patent Date Issued
RE36294 Scratch-resistant coating agent based on arcylates September 7, 1999
The invention relates to a coating composition, a method of coating molded articles with the coating composition, and the molded articles so coated, particularly molded articles comprised of thermoplastic or thermoelastic plastics. The coating, in the form of a cured thin layer, is parti
6469203 Method for depolymerizing polymethylmethacrylate October 22, 2002
The present invention relates to a process of recovering monomeric esters of substituted or unsubstituted acrylic acid from polymer material having corresponding structural units by depolymerization by means of a fine-grained heat-transfer medium which is maintained above the depolym
5565130 Comb polymers based on olefin copolymer macromonomers October 15, 1996
The invention relates to comb polymers based on olefin copolymer macromonomers. Preferred comb polymers are copolymers of optionally hydrogenated olefin copolymer macromonomers of formula I ##STR1## wherein R' is hydrogen or methylR.sub.1 is the organic residue of a lithium-organic c
5558781 Process for enzymatically degumming vegetable oil September 24, 1996
A process is disclosed for enzymatically degumming vegetable oil where the vegetable oil to be degummed is adjusted to a pH from 3 to 6 and is mixed with an aqueous enzyme solution, which contains one of the enzymes phospholipase A1, A2 or B. In a degumming reactor the enzymes are pe
5523168 Transparent composite plate system June 4, 1996
The invention relates to transparent composite plate systems of a) at least two acrylic glass exterior plates S, S' with a thickness of at least 2 mm and parallel surfaces, and b) an intermediate layer Z containing a thermoplastically processable elastomer E, whereby the elastomer E
5446095 Compatible polymer blends August 29, 1995
Compatible polymer blends PM, exhibiting a single glass transition temperature Tg comprise(A) 0.1-99.9 wt. % of a polymer P1 comprising at least 95 wt. % styrene; and(B) 99.9-0.1 wt % of a polymer P2 comprising(a) more than 90 wt. % and up to 100 wt. % of ethyl methacrylate, and(b) 0 wt. % u
5395882 Light-scattering polystyrene molding compounds, and molded articles produced therefrom March 7, 1995
The invention relates to light-scattering polystyrene molding compounds comprising40-99.9 weight % of a (optionally impact-strength-modified) polymeric matrix phase comprised of at least 50 weight % styrene and or substituted styrenes, or a mixture thereof; and0.1-60 weight % of scatteri
5380801 Miscible blends of polyphenylene ether and polyaryl (meth)acrylate copolymers January 10, 1995
Compatible polymer blends containingA) 0.5-99.5 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 (cyclo)alkyl group or alkoxyl group having 1 to 8 carbon atoms or an optionally
5380797 High impact strength polymer blends January 10, 1995
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 ther
5349025 Heat sealable plastic film September 20, 1994
This invention relates to heat-sealable plastic films PF with at least two-phased structure in the thickness range up to 400 .mu.m that are suitable for tightly sealing plastic comprisinga) a high molecular weight or crosslinked polymer P with a molecular weight Mw greater than 50,000 an
5344889 Polystyrene adhering heat-sealable plastic film September 6, 1994
The invention relates to a heat-sealable plastic film PF with an at least two-stage construction ranging in thickness up to 400 micrometer, that is suitable for tightly sealing plastic containers, comprising:a) a high molecular weight or crosslinked polymer P with a molecular weight in e
5342691 Polyester-polycarbonate substrate coated with UV protecting layer August 30, 1994
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
5322900 Compatible polymer blends June 21, 1994
Compatible polymer blends PM, exhibiting a single glass transition temperature Tg comprise(A) 0.1-99.9 wt. % of a polymer P1 comprising at least 95 wt. % styrene; and(B) 99.9-0.1 wt % of a polymer P2 comprising(a) more than 90 wt. % and up to 100 wt. % of ethyl methacrylate, and(b) 0 wt. % u
5306633 Bacterial xylanase, method for its production, bacteria producing a xylanase, DNA fragment encod April 26, 1994
A novel xylanase, obtained from Bacillus subtilis strains, is provided which improves the consistency and increases the volume of bread and baked goods containing it. B. subtilis DSM 7147 containing the plasmid pIK 91 produces the xylanase. Genetic engineering insertion of the gene encod
5296512 Water-soluble pressure-sensitive skin adhesive, its use, and agents provided with it March 22, 1994
A salt of an uncrosslinked copolymer of a monoethylenically unsaturated mono- or dicarboxylic acid and an alkyl ester of acrylic or methacrylic acid is suitable as a pressure-sensitive skin adhesive for plasters, for transdermal pharmaceutical forms, or for fastening bandages, which is
5286436 Producing extruded solid plastic sheet and film February 15, 1994
Extruded, smooth finished solid sheet or film, which may have a thickness<1 mm, of a thermoplastic plastic (such as polycarbonate) with a glass transition temperature >50.degree. C., which under conditions of orientation displays optical birefringence, may be manufactured into a
5280073 Elastomeric arcylic resins January 18, 1994
Elastomers based on acrylates, which are comprised, in the amount of at least 40 wt. % and as much as 100 wt. %, of one or more copolymers having a molecular weight >50,000 daltons and comprised of units of:i) acrylate monomers in the amount of 50-95 wt. %, andii) macromonomers comprised
5254632 Method of manufacturing polyalkyl methacrylate macromonomers, and use of same in the manufacture October 19, 1993
A macronomer of Formula I: ##STR1## wherein R.sub.1 is hydrogen or methyl, X is a biradical, R.sub.2 is an alkyl group of 1-40 carbon atoms and n is such that the molecular weight of the macromonomer ranges from 500-100,000 Dalton is prepared by transesterifying a monomeric ester
5247377 Process for producing anisotropic liquid crystal layers on a substrate September 21, 1993
A process for producing thin, anisotropic layers composed of liquid crystalline substances, the liquid crystalline substances being applied in a thin layer to one side of a support having a surface prestructured in such a way that the structure is given a preferred direction which de
5239001 Ternary polymer mixtures August 24, 1993
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 polycarbona
5237011 Compatible polymer mixtures of polystyrene and polycyclopentyl (meth)acrylate August 17, 1993
Compatible polymer mixtures (polymer blends) comprised of polymers of a cyclopentyl (meth)acrylate and a styrene.
5232986 Thermoplastic moulding composition comprising a polymer blend based on poly(meth)acrylate(s), ab August 3, 1993
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
5230955 Plastic sheet or plate with flameproofing means July 27, 1993
Thermoplastically re-formable plastic sheets with flameproofing means, characterized by a core layer 1-10 mm thick comprised of polyether sulfone or a similar thermoplastic, which core material has a content of at least 0.5 wt. %, preferably at least 2 wt. %, of a flame-protective additi
5225456 Aqueous polyacrylate dispersion for coatings July 6, 1993
Polyvinyl chloride surfaces receive a well-adhering, water and ethanol resistant coating with good plasticizer sealing effect by varnishing with an aqueous dispersion of (meth)acrylate polymers that are synthesized from 10 to 90% by weight acrylic and/or methacrylic acid alkyl or cycloal
5218050 Compatible polymer blends June 8, 1993
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 subs
5209986 Polymer composites May 11, 1993
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 a
5189100 Polymer blends February 23, 1993
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
5185404 Flow improvement in the processing of PVC blends to be modified for impact strength February 9, 1993
This invention relates to the flow improvement of compositions containing PVC to be modified for impact resistance, such as PVC-ABS polymer blends, during their processing, for example during injection molding, in processing machines by polymers based on alkyl methacrylate that are made
5175285 Polymers derived from polysuccinimide, used as surface coatings for medicinals and foods December 29, 1992
A conversion product of polysuccinimide useful as coating material for medicinal preparations and foodstuffs having the structure: ##STR1## wherein A is hydrogen or a straight or branched alkyl or alkylene group of 1 to 8 carbon atoms, optionally substituted by cycloaliphatic or arom
5155172 Elastomeric acrylic resins October 13, 1992
Elastomers based on acrylates, which are comprised, in the amount of at least 40 wt. % and as much as 100 wt. %, of one or more copolymers having a molecular weight>50,000 daltons and comprised of units of:i) acrylate monomers in the amount of 50-95 wt. %, andii) macromonomers comprised o
5149481 Method of manufacturing thermoplastic sheet or film September 22, 1992
An extruded, smooth finished solid sheet or film of thickness <1 mm is prepared from a thermoplastic plastic having a glass transition temperature >50.degree. C., by extruding the plastic in the thermoplastic state through a slot nozzle to form a flat extruded strip, which is i
5142062 Method of increasing the molecular weight in the manufacture of polysuccinimide August 25, 1992
A method of manufacturing polysuccinimides with molecular weights in the range 100,000 to about 200,000 by polycondensation of aspartic acid, with phosphoric acids as condensation agents, in at least two process stages, at temperatures of 100.degree.-250.degree. C. and under reduced pres
5141993 Compatible blends of polyoxymethylene and polyalkyl acrylates August 25, 1992
A compatible polymer blend consisting essentially of:a) 0.5-99.5 wt. % of homopolymer or copolymer polyoxymethylene component, andb) 99.5-0.5 wt. % of a polymer component which comprises 40-100% of at least one monomer of formula ##STR1## in which R.sub.1 is methyl or ethyl. The ble
5139882 Aqueous polyacrylate systems for varnishing plastic surfaces August 18, 1992
Varnishing plastic surfaces with a clear or pigmented aqueous dispersion of a (meth)acrylate copolymer of (a) 20 to 90% by weight of acrylic and/or methacrylic acid alkyl or cycloalkyl esters with 1 to 10 carbon atoms in the ester group; (b) 80 to 10% by weight of acrylic and/or methacry
5133970 Water-soluble pressure-sensitive skin-adhesive and use thereof July 28, 1992
A water-soluble salt of a copolymer containing a monoethylenically unsaturated monomer containing amino groups that can be radically polymerized and at least one alkyl ester of acrylic and/or methacrylic acid, is used as a flexible pressure-sensitive adhesive for application to the s
5126383 Metal compound containing polymer modified bitumen June 30, 1992
Polymer-modified bituminous compositions containing 0.5 to 20% by weight of polymer components, where 20 to 100% by weight of the polymer added is polyalkyl(meth)acrylate, which in synthesized from 50 to 99.8% by weight from C.sub.6 to C.sub.28 alkyl(meth)acrylates, 0.2 to 20% by weight
5109072 Compatible polymer mixtures April 28, 1992
A compatible polymer mixture of two polymers, consisting essentially of:A) 1-99 wt. % of a copolymer having formula I, and ##STR1## B) 99-1 wt. % of a polyalkyl methacrylate prepared from at least one monmer having formula II ##STR2## wherein R.sub.1 is C.sub.1-4 aliphatic hydro
5104931 Process for the production of immobilized antibodies April 14, 1992
A single-step procedure for the immobilization of antibodies, comprising reacting a purified antibody with buffered periodate in an amount sufficient to produce aldehyde groups in the presence of a polymer carrier material which has been modified with adipic acid dihydrazide is discl
5098975 Anisotropic liquid crystalline polymer films March 24, 1992
An anisotropic liquid crystalline polymer film comprised of a photocrosslinked liquid crystalline poly(meth)acrylate ester.
5091008 Elastically restoring polymer-modified bitumen (PmB) February 25, 1992
A polymer-modified bitumen (PmB) having improved elastic restoration and having a content of 0.5-20 wt. % of polymer components which polymer components are comprised to the extent of at least 20 wt. % of polyalkyl (meth)acrylates having molecular weights greater than 30,000, said po
5085701 Polymer-modified bitumen (PMB) February 4, 1992
A polymer-modified bitumen (PmB) having improved elastic restoration prepared by blending from 0.5-20 wt. % of a polymer material in bitumen, said polymer additive, which may be comprised of various polymers, being comprised of from 20-100 wt. % of a polyalkyl (meth)acrylate comprising
5066718 Compatible polymer mixtures November 19, 1991
A compatible polymer mixture of two disparate polymers consisting essentially of:A) 0.1-99.9 wt. % of a copolymer comprised of the following monomer unitsa) 90-10 wt. % methyl acrylate;b) 10-90 wt. % styrene; andc) 0 to <10 wt. % of one or more other monomeric vinyl compounds, other than
5066435 Process and system for producing multi-layer extrudate November 19, 1991
For producing a multi-extrudate of thermoplastically processable plastic, a coextrusion adapter block has a multi-part slide having a plurality of side-by-side slide sections mutually spaced in a direction transverse to the flow direction and slidably fitted in the adapter block for move
5063112 Impact-resistant methacrylate protective layer for polycarbonate, containing UV absorber November 5, 1991
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 mixtu
5061558 Methacrylate protective coating containing a UV-absorber for polycarbonate October 29, 1991
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, ma
5057370 Electrically conducting solid plastics October 15, 1991
The invention relates to electrically conducting solid plastics, the conductivity of which is attributable to their containing finely divided particulate, conducting substances. The electrically conducting solid plastics are comprised of or contain a polymer such as polymethyl methac
5053276 Compatible polymer blends October 1, 1991
Polymer blends composed of two different polymers P1 and P2, which form compatible polymer mixtures where polymer P1 is composed of at least 20 and up to 100% by weight of styrene and polymer P2 is composed of at least 20 and up to 100% by weight of monomers with Formula I ##STR1##
5047481 Compatible polymer blends September 10, 1991
The invention relates to compatible polymer blends comprised of a polymer component containing cyclohexyl (meth)acrylate as a monomer, and further comprised of a polymer component containing styrene as a monomer.
5023859 Optical data storage apparatus and method utilizing an amorphous polymer which exhibits photochr June 11, 1991
A device for reversible optical data storage, comprising polymer film, the film comprising an amorphous polymer capable of photochromic isomerization, whereby data is reversibly stored in said polymer film and may be read by illuminating the isomerized polymer film with a light sourc
4997883 Impact resistance modifier for polycarbonate March 5, 1991
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.
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