| 摘要 |
FIELD: organic chemistry, polymers, chemical technology. ^ SUBSTANCE: invention relates to a composition used for cross-linking and stabilizing a polymer containing hydrolysable silane groups wherein this composition comprises sulfonic acid as a catalyst for condensation of silanols. Invention describes using the composition comprising sulfonic acid as a catalyst for condensation of silanols wherein sulfonic acid represents a compound of the formula (III): ArSO3H (III) or its precursor wherein Ar means hydrocarbyl-substituted aryl group, and compound comprises in total from 14 to 28 carbon atoms and wherein a compound used as a stabilizing agent represents neutral or acidic compound, it doesn't comprise ester groups and represents compound described by the formula (I): ^ wherein R means unsubstituted or substituted aliphatic or aromatic hydrocarbyl radical that can comprise heteroatoms; R' means hydrocarbyl radical; R'' means hydrocarbyl radical, and R' and/or R'' mean a bulky radical; X1, X2 and X3 are similar or different and represent hydrogen atom (H) of hydroxyl group (-OH) wherein at least X1, X2 or X3 mean -OH; n is in the range from 1 to 4. The composition is used for cross-linking and stabilizing a polymer comprising hydrolysable silane groups. Invention provides enhancing resistance of polymer against aging, absence of mercaptan or other odor and formation of cracks in material. ^ EFFECT: valuable properties of composition. ^ 24 cl, 4 tbl |
