ORGANOMETHOXYSILANE-CONTAINING POLYURETHANE COMPOSITION WITH ANISOTROPIC PROPERTIES OF MATERIAL Russian patent published in 2014 - IPC C08G18/12 C08G18/24 C08G18/32 C09J175/00 C09K3/10 C09J5/00 C09J201/10 

FIELD: chemistry.

SUBSTANCE: claimed invention relates to single-component moisture-cured composition for obtaining adhesives, sealants and coatings. Composition contains: (a) at least one polyisocyanate P; (b) at least one aldimine A of formula (I), where n stands for 2 or 3 or 4, E stands for organic residue of n-valent amine B after removal of n primary aminogroups, and Y stands for monovalent hydrocarbon residue with 1-35 carbon atoms, optionally containing, at least, one heteroatom; (c) at least, one organomethoxysilane OS, which has, at least, one fragment of formula (VI): where a stands for 0 or 1 or 2, preferably 0 or 1, and R⁷ stands for alkyl residue with 1-8 carbon atoms, especially methyl residue; (d) at least, one catalyst, based on tin Z in form of compound dialkyl tin-(IV); (e) at least, one acid S; on condition that in composition (i) ratio V1 of the number of aldiminogroups and the number of isocyanate groups is in the range from 0.2 to 0.8 and that (ii) ratio V2 of the number of methoxygroups of organomethoxysilane OS and the number of isocyanate groups is in the range from 0.2 to 0.7, and that (iii) ratio V3 of the number of tin atoms from tin-based catalyst Z and the number of isocyanate groups is in the range from 0.002 to 0.006. Also described are method of gluing substrate S1 with substrate S2 and method of sealing, realised with application of claimed composition, as well as anisotropic and isotropic compositions, obtained by hardening of composition described above.

EFFECT: obtaining polyurethane composition, which is hardened without formation of bubbles and after hardening has to a large extent surface without detachment; as well as has low values of tension at 100% stretching and good capability of deformation recovery.

15 cl, 3 tbl, 27 ex