Patents by Inventor Rainer B. Frings
Rainer B. Frings 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).
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Patent number: 8703898Abstract: A hyperbranched polyether polyol obtained by a ring-opening reaction between a hydroxyalkyloxetane (a1) and a monofunctional epoxy compound (a2), wherein the polyether polyol includes a primary hydroxyl group (H1) and a secondary hydroxyl group (H2) in the molecular structure thereof, and has a number average molecular weight (Mn) of 1,000 to 4,000 and a hydroxyl value of 150 to 350 mg·KOH/g.Type: GrantFiled: June 20, 2006Date of Patent: April 22, 2014Assignee: DIC CorporationInventors: Rainer B. Frings, Toshihiro Ooki, Yasuhiro Takada, Hitoshi Hayakawa
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Patent number: 8409715Abstract: The present invention provides a cation-polymerizable resin composition comprising (A) a multi-branched polyether polyol obtained from a ring-opening reaction of (a1) a hydroxyalkyloxetane and (a2) an epoxy compound having one epoxy group, (B) an alicyclic epoxy compound having at least two alicyclic epoxy groups, and (C) an acid generator, which may be used in various uses including, for example, an adhesive agent or tackiness agent for optical elements, various kinds of coating agents and the like.Type: GrantFiled: July 31, 2007Date of Patent: April 2, 2013Assignee: DIC CorporationInventors: Kouichi Yokota, Koujirou Tanaka, Toshihiro Ooki, Rainer B. Frings
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Publication number: 20090286940Abstract: A hyperbranched polyether polyol obtained by a ring-opening reaction between a hydroxyalkyloxetane (a1) and a monofunctional epoxy compound (a2), wherein the polyether polyol includes a primary hydroxyl group (H1) and a secondary hydroxyl group (H2) in the molecular structure thereof, and has a number average molecular weight (Mn) of 1,000 to 4,000 and a hydroxyl value of 150 to 350 mg·KOH/g.Type: ApplicationFiled: June 20, 2006Publication date: November 19, 2009Applicant: DIC CorporationInventors: Rainer B. Frings, Toshihiro Ooki, Yasuhiro Takada, Hitoshi Hayakawa
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Publication number: 20090181263Abstract: The present invention provides a cation-polymerizable resin composition comprising (A) a multi-branched polyether polyol obtained from a ring-opening reaction of (a1) a hydroxyalkyloxetane and (a2) an epoxy compound having one epoxy group, (B) an alicyclic epoxy compound having at least two alicyclic epoxy groups, and (C) an acid generator, which may be used in various uses including, for example, an adhesive agent or tackiness agent for optical elements, various kinds of coating agents and the like.Type: ApplicationFiled: July 31, 2007Publication date: July 16, 2009Applicant: DIC CorporationInventors: Kouichi Yokota, Koujirou Tanaka, Toshihiro Ooki, Rainer B. Frings
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Patent number: 6844375Abstract: The invention relates to: 4-methylene-1,3-dioxolanes of the general formula (I) wherein R1 denotes hydrogen, C5-C6-cycloalkyl or C1-C4-alkyl; m and n, which may be the same or different, denote 0 or 1, whereby m?n, o denotes 2, 3 or 4 depending on the valency of the group X; and X denotes a C—C single bond, straight-chain or branched C1-C18-alkylene, C5-C6-cycloalkylene, C8-C18-arylalkylene, —CH2(OCH2CH2)pOCH2—, —CH2(OCH(CH3)CH2)pOCH2—, wherein p is an integer from 0 to 100; a process for their production; and intermediate products used. Moreover, compositions capable of emission-free, photocationic cross-linking, which comprise 4-methylene-1,3-dioxolanes of the general formula (I) and their use for the production of solvent-resistant and transparent films.Type: GrantFiled: August 23, 2001Date of Patent: January 18, 2005Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Helmut Hartl, Rainer B. Frings, Gerwald F. Grahe
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Patent number: 6770686Abstract: New photocationic photoinitiator combinations are described that consist of 2,4,6-triarylpyrylium salts with non-nucleophilic anions and electron donors, that are able rapidly to crosslink unpigmented as well as pigmented mixtures based on cycloaliphatic epoxides to form colourless layers such as lacquers and printing inks without generating interfering and toxic emissions.Type: GrantFiled: May 28, 2002Date of Patent: August 3, 2004Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Rainer B. Frings, Gerwald F. Grahe
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Publication number: 20030027882Abstract: New photocationic photoinitiator combinations are described that consist of 2,4,6-triarylpyrylium salts with non-nucleophilic anions and electron donors, that are able rapidly to crosslink unpigmented as well as pigmented mixtures based on cycloaliphatic epoxides to form colourless layers such as lacquers and printing inks without generating interfering and toxic emissions.Type: ApplicationFiled: May 28, 2002Publication date: February 6, 2003Inventors: Rainer B. Frings, Gerwald F. Grahe
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Patent number: 6388104Abstract: Novel 4-methylene-1,3-dioxolanes of the general formula I in which R1 denotes hydrogen or alkyl, X denotes a single bond, C1-C18 alkylene, cycloalkylene, arylalkylene, —CH2(OCH2CH2)n— or —CH2(OCH(CH3)CH2)n—, in which n is an integer from 1 to 100, and Z means a functional group selected from among —OH, —COOR′ or —OCOR′, in which R′ denotes hydrogen or C1-C8 alkyl, are described, as are a process for the production thereof and the intermediates used in this process.Type: GrantFiled: October 5, 2000Date of Patent: May 14, 2002Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Helmut Hartl, Rainer B. Frings, Gerwald F. Grahe
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Publication number: 20020045674Abstract: The invention relates to: 4-methylene-1,3-dioxolanes of the general formula (I) 1Type: ApplicationFiled: August 23, 2001Publication date: April 18, 2002Applicant: Dainippon Ink and Chemicals, IncInventors: Helmut Hartl, Rainer B. Frings, Gerwald F. Grahe
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Patent number: 6350849Abstract: The production is described of unsaturated polyesters, which exclusively contain maleate groups in their main chain, by the ring-opening polymerization of epoxides, such as glycidyl ethers, glycidyl esters and olefine epoxides, with &agr;,&bgr;-unsaturated anhydrides, preferably such as maleic anhydride, both on their own and in admixture with other cyclic anydrides, in the presence of a Zn2+ carboxylate. The polyesters which are thus produced are characterized by high molecular weights and a narrow molecular weight distribution. Polymerization can be effected between 50 and 120° C., but is preferably effected between 60 and 90° C., either in the melt or in a solvent. Unsaturated reactive thinners, which after the addition of suitable radical initiators react thermally or photochemically with the polyesters to form lacquers, cast parts or fiber-reinforced composite materials, can also be employed as solvents.Type: GrantFiled: August 3, 2000Date of Patent: February 26, 2002Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Rainer B. Frings, Gerwald F. Grahe, Shinichi Nonaka
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Patent number: 6169186Abstract: The invention relates to bismaleimides comprising mesogenic groups which consist, corresponding to (I), of two reactive terminal maleimide groups which are linked via linear or singly alkyl-substituted alkylene chains A, which are linked to an aromatic mesogen M via ester, amide or ether groups, wherein A, X, M and R are as defined in the specification. The invention, moreover, relates to oligomeric liquid crystalline bismaleimides of general formula (II) wherein A, X, M and R are as defined above, n represents and integer from 1 to 100 and B represents piperazinyl or a divalent radical which is derived from a primary or secondary para-substituted cyclic diamine, wherein B is bonded via the amino groups of the diamine. The invention also relates to methods of producing said bismaleimides.Type: GrantFiled: December 27, 1999Date of Patent: January 2, 2001Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Masaru Imai, Rainer B. Frings, Gerwald F. Grahe, Joji Kawamura, Naoki Obi
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Patent number: 6087458Abstract: An initiator composition for polymerizing unsaturated monomers, comprising a component (A) which is a mixture ofi) at least one salt of a metal in the second sub-group of the periodic table, optionally in solution in an aromatic solvent or in an .alpha.,.beta.-unsaturated ester, andii) at least one salt of a metal in the seventh and eighth sub-group of the periodic table, optionally in solution in an aromatic solvent or in an .alpha.,.beta.-unsaturated ester; anda component (B) which is at least one organic peroxy ester,wherein the components (A) and (B) are kept separate from one another until they are brought together to initiate polymerization of the unsaturated monomers.Also, polymerizable compositions containing the initiator composition together with polymerizable unsaturated monomers. The initiator composition can be used to homopolymerize and copolymerize various unsaturated monomers, such as methacrylic and acrylic acid esters, at lower temperatures.Type: GrantFiled: January 30, 1998Date of Patent: July 11, 2000Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Shin-ichi Nonaka, Rainer B. Frings, Carola Jaroszewski, Gerwald F. Grahe
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Patent number: 5741845Abstract: The invention concerns a process for the production of block copolymers or aqueous dispersions and emulsions thereof, whereby azo macroinitiators are reacted with radical-polymerizable monomers or a mixture of several radical-polymerizable monomers. The azo macroinitiators are obtained by reacting simple reactive azo compounds with prepolymers with a molecular weight between 400 and 20000, which possess at least 2 functional groups, e.g. polyurethanes or polyesters.The aqueous block copolymer dispersions and emulsions produced according to the invention are suitable for use for the production of paints, adhesives etc.Type: GrantFiled: June 7, 1995Date of Patent: April 21, 1998Assignee: Dainippon Ink & Chemicals Inc.Inventors: Rainer B. Frings, Shigeru Komazaki, Gerwald F. Grahe
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Patent number: 5612406Abstract: The invention concerns a process for the production of block copolymers or aqueous dispersions and emulsions thereof, whereby azo macroinitiators are reacted with radical-polymerizable monomers or a mixture of several radical-polymerizable monomers. The azo macroinitiators are obtained by reacting simple reactive azo compounds with prepolymers with a molecular weight between 400 and 20000, which possess at least 2 functional groups, e.g. polyurethanes or polyesters.The aqueous block copolymer dispersions and emulsions produced according to the invention are suitable for use for the production of paints, adhesives etc.Type: GrantFiled: April 3, 1996Date of Patent: March 18, 1997Assignee: Dainippon Ink & Chemicals Inc.Inventors: Rainer B. Frings, Shigeru Komazaki, Gerwald F. Grahe
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Patent number: 5395911Abstract: A thermally curable mixture contains 10-70% by weight of reactive compounds, 0.05-2% by weight of at least one basic catalyst, and at least one solvent. The reactive compounds are consisting essentially of a first reactive compound and a second reactive compound at a molar ratio between 1:1 and 1:10. The first reactive compound is a formamide selected from the group consisting of hydroxyformamides, di-formamides and polyformamides, and the second reactive compound is at least one compound having an epoxy equivalent between 100 and 800 g KOH per mole epoxy group, selected from a group of aromatic di-glycidylethers and aromatic poly-glycidylethers. The basic catalyst is at least one chemical agent selected from the group consisting of tertiary ammonium salts, tertiary aromatic amines, and tertiary heterocyclic amines. The solvent is at least one chemical compound selected from the group consisting of aliphatic alcohols, ether alcohols, diether, and tertiary amides.Type: GrantFiled: July 19, 1993Date of Patent: March 7, 1995Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Rainer B. Frings, Gerwald F. Grahe