METHOD OF BLEACHING LINEN FIBRES FOR PRODUCTION OF MEDICAL SUPPLIES,申请号RU20130136894-传众专利搜索

METHOD OF BLEACHING LINEN FIBRES FOR PRODUCTION OF MEDICAL SUPPLIES

申请公布号：RU2525781(C1)

申请号：RU20130136894

申请日期：2013.08.06

申请公布日期：2014.08.20

申请人：

FEDERAL'NOE GOSUDARSTVENNOE BJUDZHETNOE UCHREZHDENIE NAUKI INSTITUT KHIMII RASTVOROV IM. G.A. KRESTOVA ROSSIJSKOJ AKADEMII NAUK (IKHR RAN);OBSHCHESTVO S OGRANICHENNOJ OTVETSTVENNOST'JU " INNOVATSIONNYE TEKHNOLOGII L'NOPERERABOTKI" (OOO "INTEKHLEN")

发明人：GALASHINA VALENTINA NIKOLAEVNA;MORYGANOV ANDREJ PAVLOVICH;BOGACHKOVA TAT'JANA NIKOLAEVNA;GRUSHNIKOVA IRINA EVGEN'EVNA;DYMNIKOVA NATAL'JA SERGEEVNA;EROKHINA EKATERINA VJACHESLAVOVNA

分类号：D06L3/02

主分类号：D06L3/02

摘要：FIELD: textiles, paper.SUBSTANCE: method of bleaching linen fibres for production of medical supplies is proposed, consisting in that the following operations are carried out in sequence: treatment with sulphuric acid solution and subsequent washing at a temperature of 25-30°C for 25-30 minutes, oxidative cooking with the alkaline solution of hydrogen peroxide containing stabiliser, in stages for various values of the silicate-alkali modulus, first at a temperature of 20-25°C at a module of 0.5-0.6 for 10-15 minutes, then at a module of 0.8-0.9 for 10-20 minutes, and then at a module of 1.0-1.1 for 30-60 minutes at a temperature of 70-75°C, after that the temperature is raised to 96-98°C and maintained for 30-60 minutes, then the module is reduced to 0.4-0.5 and cooking is continued for 30-60 minutes, bleaching in the alkaline solution containing the same substance as the solution for the oxidative cooking, washing with water and final oxidation with aqueous solution of acetic acid.EFFECT: invention enables to improve the efficiency, environmental friendliness of the method and to obtain bleached fibres with high properties of bleaching, capillary capacity, normalised content of chloride, calcium and sulphate salts.4 cl, 2 tbl