| 摘要 |
The invention relates to a process for obtaining a binder used for impregnating the mineral fibers, particularly glass and basalt fibers, used as insulating materials. Further, the invention relates to a curable binder, to the use thereof, and to bonded. The process for obtaining a polymeric binder for impregnating the fibers, according to the invention may comprise the steps of {a} obtaining a partly acetalized polyvinyl alcohol, with an acetalization degree of 18-22%, {b} obtaining a the styrene - maleic aldehyde - butyl acrylate ter-copolymer, {c} obtaining a acrylic acid - acrylonitrile copolymer by the radical copolymerization. The resulting curable resin may be a reddish -yellowish up to reddish-brown aqueous solution with a pH ranging from 5 to 7 and a viscosity of between 8 and 144 sec with the 8 mm diameter cup according to ISO 2431 / ASTM D5125. |
