摘要:
The present invention relates to a method for making a sound-insulating load-bearing floor, said method comprising the following steps: - providing a load-bearing floor; - applying a sound-insulating material onto said load-bearing floor so as to form a substantially continuous coating layer; allowing said substantially continuous coating layer to dry; wherein said sound-insulating material includes: from 40% by weight to 95% by weight, preferably from 60% by weight to 90% by weight, with respect to the total weight of the sound-insulating material, of at least one rubber in a subdivided form; from 5% by weight to 60% by weight, preferably from 10% by weight to 40% by weight, with respect to the total weight of the sound-insulating material, of at least one binding agent comprising at least one water-dispersible polymer having a glass transition temperature (Tg) of from -50°C to +50°C, preferably of from -40°C to + 10°C.
摘要:
The present invention relates to a method for making a sound-insulating load-bearing floor, said method comprising the following steps: - providing a load-bearing floor; - applying a sound-insulating material onto said load-bearing floor so as to form a substantially continuous coating layer; allowing said substantially continuous coating layer to dry; wherein said sound-insulating material includes: from 40% by weight to 95% by weight, preferably from 60% by weight to 90% by weight, with respect to the total weight of the sound-insulating material, of at least one rubber in a subdivided form; from 5% by weight to 60% by weight, preferably from 10% by weight to 40% by weight, with respect to the total weight of the sound-insulating material, of at least one binding agent comprising at least one water-dispersible polymer having a glass transition temperature (Tg) of from -50°C to +50°C, preferably of from -40°C to + 10°C.
摘要:
A water-resistant telecommunication cable is disclosed comprising a solid and compact element (7) surrounding at least one optical transmitting element (3), wherein said element comprises a vinyl alcohol/vinyl acetate copolymer having a hydrolysis degree of about 60 % to about 95 % and a polymerisation degree higher than about 2,500; at least a first solid plasticizer, having a melting point between 50° and 110°C, and a second solid plasticizer, having a melting point equal or higher than 140°C, in an amount of about 10-30 and 1-10 parts by weight per hundred parts by weight of the copolymer, respectively; the water-soluble polymer material showing: a complex modulus (G*) equal or higher than 2.5 106 Mpa; a ratio of the viscous modulus to the elastic modulus (tanσ)equal or lower than 2.30; a glass transition temperature (Tg) of about 20° to about 35ºC.
摘要:
Telecommunication cable comprising an elongated element housing at least one transmitting element, said elongated element comprising a water-soluble polymeric composition which comprises: - a vinyl alcohol/vinyl acetate (VA-VAc) copolymer having a saponification degree of from about 60% to about 95%; - a plasticizer; a hydrolysis stabilizer compound comprising a chelant group comprising two hydrogen atoms bonded to two respective heteroatoms selected from nitrogen, oxygen and sulfur, said two hydrogen atoms having a distance between each other of from 4.2 x 10-10 m to 5.8 x 10-10 m, preferably of from 4.5 x 10-10 m to 5.5 x 10-10 m, said stabilizer compound being present in an amount of at least 0.75 mmoles per 100 g of VA-VAc copolymer. Said elongated element is in particular a buffer tube hosing a plurality of optical fibers. The presence of the stabilizer allows to reduce the increase of the hydrolysis degree of the VA-VAc copolymer upon aging, thus maintaining the desired water blocking properties of the VA-VAc copolymer.
摘要:
The present invention relates to a method for making a sound-insulating load-bearing floor, said method comprising the following steps: - providing a load-bearing floor; - applying a sound-insulating material onto said load-bearing floor so as to form a substantially continuous coating layer; allowing said substantially continuous coating layer to dry; wherein said sound-insulating material includes: from 40% by weight to 95% by weight, preferably from 60% by weight to 90% by weight, with respect to the total weight of the sound-insulating material, of at least one rubber in a subdivided form; from 5% by weight to 60% by weight, preferably from 10% by weight to 40% by weight, with respect to the total weight of the sound-insulating material, of at least one binding agent comprising at least one water-dispersible polymer having a glass transition temperature (Tg) of from -50°C to +50°C, preferably of from -40°C to + 10°C.
摘要:
Optical fiber comprising at least one epoxidized polyolefin based polymer coating, characterized in that said coating is formed from a crosslinkable composition comprising: (a) at least one epoxidized polydiene oligomer having a first and a second end, said oligomer comprising at least one hydrocarbon chain that is substantially free of ethylenic double bonds, at least one epoxide group at said first end and at least one reactive functional group at said second end; b) at least one hydrogenated polydiene oligomer comprising at least one reactive functional group capable of reacting with said epoxide groups; (c) at least one photo-initiator. Preferably, said coating is a primary coating, preferably coated with a secondary coating.