Volume 2, no 2
The Behavior Study on CAROM Rubber Mixtures in the Presence of the Different Charges of Light Color
Cornelia CINCU , Livia Maria BUTAC, Marilena BONT
ABSTRACT. Is was studied the possibility to replace the ULTRASIL VN3 active filler from import with indigene fillers, more cheaper, for CAROM rubber mixtures, used to obtain the footwear soles. There were formulated different types of composition and, on the laboratory tests basis, there were established that the optimal variant should contain a modified charge (Tulcea silice chemical treated) in order to the vulcanized product properties be framed in the actual standards requirements.
KEY WORDS: indigene fillers, footwear soles, types of composition laboratory tests.
Product and Technology with Ecological Effect to Leathers Tanning
Luminiţa ALBU, Victoria BRĂTULESCU, M.D. BUCEVSCHI, Veronica BOCU
ABSTRACT. In the last years, the human society is confronting with a very special problem: the environment pollution. The leather industry, having a considerable polluting impact, is always searching for some next technological and economical solution, to slave the environmental issues. The paper present a new type, of product, which could influence the leathers reactivity, comparing with the chrome basic salts. The new type of product has been obtained by chemical changing of the collagen hydrolyzed by grafting with glycoside methacrylate (2/3/ epoxy propylene methacrylate).
KEY WORDS: environment pollution, technological and economical solution
Relation between Chemical Composition of Some Lubricating Hydrophobizing Materials and the Properties Awarded to Natural Leather
Margareta FLORESCU, Gheorghe COARĂ, Olga NICULESCU
ABSTRACT. The paper present an interdependency relation between chemical structure of some synthesized lubricating-hydrophobisation materials and chemical and physical- mechanical properties awarded to processed leather. Chemical and physical-mechanical properties values of leathers fat liquored and hydrophobised with the chemical synthesized materials were ranged in the international standards values.
KEY WORDS: scientific information, water proofed leather, lubricating materials, chemical materials, chemical and physical properties
New Finishing Technologies of Hydrophobic Bovine Leathers Designated to the Footwear Uppers
Olga NICULESCU, Luminiţa ALBU, Gheorghe COARĂ, Lucreţia MIU, Carmen GAIDĂU
ABSTRACT. This work is placed in the actual condition of leather processing which is having in view the improving of the improving of technological process of leathers and auxiliary materials used for the aim to obtain some finished leathers for the hydrophobic footwear. New bovine leather finishing technologies were elaborated using retaining syntans with lubricating / hydrophobisation effect, based on modified acrylic polymers, in the view of getting some finished leathers designated for footwear uppers, having higher water resistance.
KEY WORDS: leathers processing, technologies retaining syntans, modified acrylic polymers.
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