专利号:US-9023626-B2 优先权日:2007-09-20 标 题:Methods for the synthesis of fatty diacids by the metathesis of unsaturated diacids obtained by fermentation of natural fatty acids 发明人:DUBOIS JEAN-LUC 权利人:DUBOIS JEAN-LUC; ARKEMA FRANCE 摘要:The invention relates to a method for the synthesis of diacids of general formula ROOC—(CH 2 ) n —(CHâ•?CH) a —(CH 2 ) m COOR 1 in which n and m are identical or different and each represent an integer such that their sum is between 6 and 15, a is an index of 0 or 1, and R and R 1 are H or an alkyl radical with 1 to 4 carbon atoms, from long-chain mono-unsaturated natural fatty acids or esters having at least 10 adjacent carbon atoms per molecule of the general formula CH 3 —(CH 2 ) p —CHâ•?CH—(CH 2 ) q —COOR, p and q, being identical or different and representing indices between 2 and 11, wherein said method comprises the first step of oxidizing by fermentation said natural fatty acid or ester, using a microorganism, such as a bacterium, a yeast, or a fungus, into at least one unsaturated dicarboxylic acid or dicarboxylate, the second step of submitting the product from the first step to a metathesis crossed with a compound of formula R 2 OOC—(CH 2 ) x —CHâ•?CH—R 3 , in which R 2 is H or an alkyl radical with 1 to 4 carbon atoms, x is 0 or 1 or 2, and R 3 is H, CH 3 or COOR 2 , in order to obtain the unsaturated compound of formula ROOC—(CH 2 ) q —CHâ•?CH—(CH 2 ) x —COOR 2 , and the third optional step of converting the usaturated compound into a saturated compound by hydrogenation of the double bond.
专利号:US-6171614-B1 优先权日:1996-10-15 标 题 :Synthesis of glycophospholipid and peptide-phospholipid conjugates and uses thereof 发明人:CHAIKOF ELLIOT L; SUN LIJUN 权利人:UNIV EMORY 摘要:The present invention provides glycophospholipid and peptide-phospholipid conjugates comprising a phospholipid moiety and a saccharide or peptide moiety joined by an ether linkage comprising a secondary or tertiary amine. The conjugate structure of the invention comprises a flexible spacer arm between the phospholipid and saccharide or peptide moieties which, being variable in length, serves to optimize saccharide or peptide bioactivity. This invention further provides a method for the synthesis of such conjugates comprising the step of reductive amination. The method is efficient, economical and provides a high yield of product. Glycophospholipid and peptide-phospholipid conjugates of the invention can be incorporated and, optionally, chemically polymerized in self-assembling systems such as membranes, bilayers, films, liposomes and the like, and find utility diagnostically and therapeutically in medical and immuno-biological applications.
专利号:US-8940923-B2 优先权日:2007-06-13 标题:Method for the synthesis of diacids or diesters from natural fatty acids and/or esters 发明人:DUBOIS JEAN-LUC 权利人:ARKEMA FRANCE 摘要:Disclosed herein a process for the synthesis of diacids or diesters of general formula ROOC—(CH 2 )x-COOR, in which n represents an integer between 5 and 14 and R is either H or an alkyl radical of 1 to 4 carbon atoms, starting from long-chain natural monounsaturated fatty acids or esters comprising at least 10 adjacent carbon atoms per molecule, of formula CH 3 —(CH 2 )n-CHR 1 —CH 2 —CHâ•?CH—(CH 2 )p-COOR, in which R represents H or an alkyl radical comprising from 1 to 4 carbon atoms, R 1 is either H or OH, and n and p, which are identical or different, are indices between 2 and 11.
专利号:US-7754646-B2 优先权日:2001-06-29 标 题 :Synthesis and use of organosilica particles 发明人:TRAU MATHIAS; JOHNSTON ANGUS 权利人:NANOMICS BIOSYSTEMS PTY LTD 摘要:Highly functionalized, porous organosilica particles and methods of their synthesis are described that employ high amounts of functional silane such as 3-mercaptopropyl trimethoxysilane. Silane particle diameters are controlled from less than 1 μm to over 100 μm. The particles have a high surface area due to their advantageous internal structures, which consist of large pores, typically up to 10 μm that are linked by small channels of typically about 20 nm diameter. Isothiocyanate modified fluorescent dyes can enter and react with thiol groups inside the pores. The invention also provides clear silica shells of controlled thicknesses to protect fluorescent signals and provide an independent parameter for distinguishing particle types based on light scattering off different sized particles. The particles are stable and useful for many purposes, particularly for optical bar coding in combinatorial synthesis of polymers such as nucleic acid, polypeptide, and other synthesized molecules.
专利号:US-2024254395-A1 优先权日:2021-06-02 标题 :Pyrolysis of polyurethane compound-containing material in order to recover raw materials 发明人:EIDEN STEFANIE; BELLINGHAUSEN RAINER; WOLF AUREL; HAHN CHRISTIAN; LODDENKEMPER TIM; JENDRZOK CAROLA 权利人:COVESTRO DEUTSCHLAND AG 摘要:The invention relates to a process according to claim 1 and pyrolysis devices used therein for the pyrolysis of pyrolysis stock comprising polyurethane-containing material, allowing carrying out pyrolysis on an industrial scale. According to the invention, even with higher amounts of pyrolysis stock an amount of pyrolysis product is obtained that contains cleavage products which can be reused for the synthesis of polyurethane-containing material.
专利号:US-2024352216-A1 优先权日:2021-08-20 标 题:Pyrolysis of a polymeric polyurethane compound in order to recover raw materials 发明人:EIDEN STEFANIE; BELLINGHAUSEN RAINER; WOLF AUREL; ALBACH ROLF 权利人:COVESTRO DEUTSCHLAND AG 摘要:The invention relates to a method according to claim 1 for the commercial implementation of a pyrolysis, and to pyrolysis devices for the pyrolysis of pyrolysis stock used in this method. The pyrolysis stock contains a polymeric compound having at least one structural polyurethane unit of the formula (I), wherein Q is a hydrocarbon group with 2 to 8 carbon atoms, preferably 3 to 8 carbon atoms, and n represents a number from 2 to 4, most preferably 2, and -* represents a covalent bond to the polymer backbone. The method and the pyrolysis device according to the invention allow, even with higher compounds of pyrolysis stock an amount of pyrolysis product to be obtained that contains cleavage products which can be reused for the synthesis of polyurethane-containing material.
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