摘要:
Disclosed is a method for producing polyaspartic acid by means of condensation polymerization of finely divided aspartic acid at temperatures above 150 DEG C in the presence of acid catalysts, the acid catalysts being first brought into contact with the finely divided aspartic acid in the reaction zone in which the condensation polymerization takes place.
摘要:
Disclosed is a method for producing polyaspartic acid by means of condensation polymerization of finely divided aspartic acid at temperatures above 150 °C in the presence of acid catalysts, the acid catalysts being first brought into contact with the finely divided aspartic acid in the reaction zone in which the condensation polymerization takes place.
摘要:
Described is a protein which dissolves blood clots, prepared fromthe leech Hirudo Medicinalis, containing the sequences 1-13 listed in the sequence protocoland capable of splitting ε-(α-glutamyl)-lysine compounds, plus its muteins and natural variants with a comparable action.
摘要:
Protéine dissolvant les caillots sanguins, préparée à partir de la sangsue Hirudo medicinalis, contenant les séquences 1 à 13 indiquées dans le protocole de séquences et dissociant les liaisons epsilon-(gamma-glutamyl)-lysine, ainsi que les mutéines et les variantes naturelles de cette protéine ayant un effet comparable.
摘要:
A process is disclosed for preparing polyaspartic acid salts by treating polycondensates in an aqueous medium with bases. At least 0.7 equivalents of an alkaline metal and/or alkaline earth metal base per mole of the aspartic acid, aspartic acid imide and/or amide units contained in the polycondensates are used. The bases are added during 30 minutes to 20 hours to an aqueous suspension of the polycondensates of aspartic acid heated up to 40 to 140 °C, and the reaction mixture is optionally allowed to continue to react. These alkaline metal and/or alkaline earth metal salts of polyaspartic acids obtained by treating aspartic acid polycondensates in an aqueous medium with more than 1 equivalent of an alkaline metal and/or alkaline earth metal base for reducing the molar mass of polycondensates are used as additives for washing and cleaning agents.
摘要:
The invention relates to endothelin-converting enzymes containing the polypeptide sequence described in SEQ. ID. NO. 30 or SEQ. ID. NO. 36 or functional fragments thereof, genes which code for such enzymes, and processes for producing the said enzymes and the use thereof.
摘要:
A process is disclosed for preparing polyaspartic acid salts by treating polycondensates in an aqueous medium with bases. At least 0.7 equivalents of an alkaline metal and/or alkaline earth metal base per mole of the aspartic acid, aspartic acid imide and/or amide units contained in the polycondensates are used. The bases are added during 30 minutes to 20 hours to an aqueous suspension of the polycondensates of aspartic acid heated up to 40 to 140 DEG C, and the reaction mixture is optionally allowed to continue to react. These alkaline metal and/or alkaline earth metal salts of polyaspartic acids obtained by treating aspartic acid polycondensates in an aqueous medium with more than 1 equivalent of an alkaline metal and/or alkaline earth metal base for reducing the molar mass of polycondensates are used as additives for washing and cleaning agents.