NANOSIZED ABSORBERS OF IR-RADIATION IN MOULDED ARTICLES Russian patent published in 2014 - IPC B32B27/00 B32B27/06 B32B27/18 B82B1/00 B82B3/00 C08K3/22 C08K3/38 G02B5/22 

FIELD: process engineering.

SUBSTANCE: invention relates to sandwiched moulded articles to be used as boards, films for hothouses or as window elements. Moulded article 1 consists of outer layer 2 and inner layer 3 located below outer layer 1 and made of thermoplastic polymer. Said outer layer 2 is made of at least one thermoplastic polymer and at least one nano-sized absorber of IR-radiation 8 selected from tin oxide alloyed with antimony or indium or rare earth metals borides in the form of nanoparticles. Additional additives to mould article 1 can be UV-absorbers, organic IR-radiation absorbers not in the form of particles, stabilisers, antioxidants, dyes, inorganic salts, pearl pigments, radiation reflectors in IR-spectrum near band, anti-sweat means or fillers. Besides, this invention discloses the process of making said article 1 by coextrusion of outer layer 2 and inner layer 3.

EFFECT: efficient protection of surfaces of, for example, buildings, automobiles or hothouses, efficient control over internal heat.

12 cl, 1 dwg