Application and Practice of Rubbing Fastness Improver DM-2589N
Lv Xiaolan,
Liao Huan,
Chen Jianfang,
Deng Donghai
Issue:
Volume 4, Issue 1, March 2019
Pages:
1-6
Received:
28 December 2018
Accepted:
1 February 2019
Published:
26 May 2019
Abstract: The purpose of this paper is to introduce the application and Practice of a wet rubbing fastness improver DM-2589N in dark cotton fabrics. Methodology - The influence of DM-2589N mass concentration, baking temperature and time on the rubbing fastness are studied. The effects of DM-2589N on different fabrics, different dyes, and the effects of DM-2589N and other finishing agents in the same bath are studied. Findings - DM-2589N has excellent lifting effect on all kinds of cotton fabrics, and it is suitable for the improvement of rubbing fastness of fabrics dyed with reactive, direct, vulcanized and vat dyes. the optimum process is DM-2589N 40g/L, One dip and one rolling, baking temperature 150°C. Practical implications - The dry and wet rubbing fastness of the finish products can be increased above Grade 3-4, which can meet the first-class quality requirements of customers. Originality/value – The wet-rubbing fastness improver DM-2589N can be used in the same bath with the fixing agent and softener without adjusting the pH value, which can simplify the production process, shorten production time and greatly improve production efficiency.
Abstract: The purpose of this paper is to introduce the application and Practice of a wet rubbing fastness improver DM-2589N in dark cotton fabrics. Methodology - The influence of DM-2589N mass concentration, baking temperature and time on the rubbing fastness are studied. The effects of DM-2589N on different fabrics, different dyes, and the effects of DM-25...
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Research the Extinguish of the Oil and Gas Well’s Fires
Issue:
Volume 4, Issue 1, March 2019
Pages:
7-13
Received:
16 April 2019
Accepted:
13 May 2019
Published:
4 June 2019
Abstract: This research paper concerns the oil and gas well’s fires and the modern extinguishing process. We will introduce the fire thermal, chemical, and physical mechanisms on which our quenching mathematical model will be constructed based on the fire thermal parameters. The new technique involves the whole thermal sphere not only the fire visible core. Then the solution of the program was enhanced with the help of the international MATLAB program and was based on the available international fire data. Later the obtained solution shows very interesting results using the economic quenching matter and the process enhancement in optimum time. Practically we test the technique by building our own system and test it on three type of hydrocarbon fuels these are: 1- Kerosene, 2- Diesel, and 3- Benzene, the obtained results by adding clay to the sea water were very encouraging.
Abstract: This research paper concerns the oil and gas well’s fires and the modern extinguishing process. We will introduce the fire thermal, chemical, and physical mechanisms on which our quenching mathematical model will be constructed based on the fire thermal parameters. The new technique involves the whole thermal sphere not only the fire visible core. ...
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A Highly Selective and Efficient Method for the Preparation of Amides from Carboxylic Acids and Amines Using Sodium Hydrogen Sulfate Adsorbed on Silica Gel †
Rathod Aravind Kumar,
Nayaki Salvanna,
Biswanath Das,
Jajula Kashanna
Issue:
Volume 4, Issue 1, March 2019
Pages:
14-18
Received:
23 February 2019
Accepted:
23 April 2019
Published:
17 June 2019
Abstract: The formation of amides from carboxylic acids and amines has been catalyzed efficiently with sodium hydrogen sulfate adsorbed on silica gel (NaHSO4.SiO2) at room temperature to give the products in high yields. The conversion carried out under reflux requires less reaction times and forms the products in higher yields. The reaction is highly selective as it has been found that either or both of the substrates should be aliphatic but it is failure when the acid as well as the amine is aromatic. The method has been utilized for the preparation of a natural phenethyl amide derivative and its analogues.
Abstract: The formation of amides from carboxylic acids and amines has been catalyzed efficiently with sodium hydrogen sulfate adsorbed on silica gel (NaHSO4.SiO2) at room temperature to give the products in high yields. The conversion carried out under reflux requires less reaction times and forms the products in higher yields. The reaction is highly select...
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