| 摘要 |
<p>A non-adhesive paste sealant comprises an acrylonitrile-butadiene copolymer containing from 5 to 55% acrylonitrile, an organic solvent and 0,5 to 5% of an antioxidant, the solid content of the composition being from 5 to 35%. Specified solvents are acetone, methyl-ethylketone and mixtures of aromatic solvents. Specified antioxidants are phenyl-beta-naphthylamine, diphenyl-p-phenylene-diamine, aldol-alpha-naphthylamine, hydroquinone, mono-benzyl ether and certain petroleum waxes. In examples a red pigment (croma red) is also present.</p> |
