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Patent Agency Ranking
公开(公告)号：DE3222912A1
公开(公告)日：1983-12-22
申请号：DE3222912
申请日：1982-06-18
Applicant: BASF AG
Inventor： GOERTZ HANS-HELMUT DIPL CHEM D , MARCINOWSKI STEFAN DIPL CHEM D , SANNER AXEL DIPL CHEM DR
Abstract: An insoluble biocatalyst is prepared by forming a mixture consisting essentially of the biocatalyst, one or more water-soluble compounds having two or more acrylamide or meth-acrylamido groups and one or more water soluble amines possessing two or more hydrogen atoms bonded to an amine nitrogen, and forming a gel from the mixture. The water-soluble amine is selected from ammonia, lower diamines, lower polyamines, primary monoamines, polyethyleneimine and polyvinylamine. Beads containing the biocatalyst may be formed by suspending the mixture in a water-immiscible solvent to form droplets prior to gelling. The biocatalyst may be an enzyme, cells or cell fragments.
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公开(公告)号：DE2911776A1
公开(公告)日：1980-10-09
申请号：DE2911776
申请日：1979-03-26
Applicant: BASF AG
Inventor： TSCHANG CHUNG-JI DIPL CHEM DR , KLEFENZ HEINRICH DIPL CHEM DR , SANNER AXEL DIPL CHEM DR , ZAHN WOLFGANG DIPL CHEM DR
Abstract: A process for the preparation of an enzymatically active formulation embedded in silica gel, wherein an aqueous mixture of an enzymatically active formulation and a dissolved alkali metal silicate and/or ammonium silicate is suspended in an organic, water-immiscible fluid and then converted to a water-insoluble gel.
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公开(公告)号：DE2834539A1
公开(公告)日：1980-02-21
申请号：DE2834539
申请日：1978-08-07
Applicant: BASF AG
IPC: C08F8/00 , C08F8/18 , C08F8/28 , C08F8/30 , C08F8/32 , C08F8/34 , C08F212/08 , C08H1/00 , C12N11/08
Abstract: A macroporous crosslinked styrene resin, used as a carrier for covalently binding proteins, which resin contains isocyanate, thioisocyanate or aldehyde groups as protein-binding groups and may or may not contain sulfonic acid groups-which may also be in the form of the sodium salt or of sulfonic acid amide groups-as hydrophilic groups. The carrier according to the invention is prepared from a sulfochlorinated macroporous crosslinked styrene resin by reacting the sulfonic acid chloride groups with an alpha , omega -diamino compound, with hydrazine or with an alpha , omega -diamino-diether, converting any sulfonic acid chloride groups which may still be present to free sulfonic acid groups, their sodium salt or a sulfonamide group, and then reacting the terminal amino groups with phosgene, thiophosgene or a diisocyanate in order to produce the binding groups, which in turn fix a biologically active protein by covalent bonds.
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公开(公告)号：DE2327249A1
公开(公告)日：1974-12-19
申请号：DE2327249
申请日：1973-05-29
Applicant: BASF AG
Abstract: Textiles are washed with phosphate-free or -deficient detergent compsns. contng. water-insoluble, solid, powdery cation exchangers having a Ca-bonding power >=80 (>=120) mg. CaO/g. through COOH gps. in alkali salt form, and prepd. by (a) polymerising a monomer mixt. contng. (i) acrylic and/or methacrylic acid or alkali salts and (ii) acrylamide and/or methacrylamide and HCHO (condensates) opt. with NH3 and/or (iii) (meth)acrylamide and cpds. contg. >=2 N-methylol gps. in molecule and/or (iv) N-methylol-(meth)acrylamide or its ethers with 1-6C alkanols, in an aq. medium contng. a radical former, at 180 (100-160) degrees C., with cross-linking and removal of water from polymer obtd.; and (b) communiting polymer to particle size 0.8 mm. Conversion of COOH gps. to alkali salt form takes place, if necessary, before or after (b). Environmental pollution and drinking water contamination are prevented.
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公开(公告)号：DE2327248A1
公开(公告)日：1974-12-19
申请号：DE2327248
申请日：1973-05-29
Applicant: BASF AG
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