| 摘要 |
<p>The invention relates to a double component polymer composition used for surface coating and as binder and adhesive in the paper, cardboard industry, in the construction field, in the food, textile, leather industries and in medicine, and to a process for preparing the same. According to the invention, the double component polymer composition with interpenetrated lattices comprises a first component consisting of caseine and/or collagen as such or as a polymer composition comprising casein and/or collagen, prepared from 20 ... 30 parts, by weight, of chloric casein and/or collagen, 1.5 ... 25 parts by weight of urea, 0.5 ... 5 parts by weight of non-ionic emulsifier, 1 ... 4 parts by weight of starch, 0.1 ... 5 parts by weight of zinc, aluminium, nickel and/or zirconium oxide and/or acetate, 0.5 ... 5 parts by weight of preservative, 1 ... 1.5 parts by weight of foam killer, preferably silicone oil, 40 .... 50 parts by weight of 25% ammonia solution, and a second core-shell-type acrylic copolymer obtained by polymerization in emulsion, in two stages, a monomer mixture with low water solubility, emulsified with surfactants and a reduction-oxidation initiator, at a temperature of 15 .... 90 C for 0.5 ... 1 hour. There is carried out a heat treatment for 10 .... 60 minutes, there being obtained a core structure, thereafter, in a second polymerization stage there is dosed for 3 ... 4 hours a monomer mixture having low water solubility and hydrophilic monomers emulsified as in the first stage, at a temperature ranging from 60 ... 90 C, the reaction continuing for one more hour, at a temperature of 90 C, followed by cooling at 30 ... 40 C, the first component representing 0.1 ... 99.9% of the resulting composition and being in the form of a yellowish paste with a dry substance content ranging from 20 to 55%, a pH from 5.5 to 8 and a viscosity at 20 C of 200 ... 50,000 cP.</p> |
