| 摘要 |
A dye receptive article comprises a shaped mixture of a major proportion of a high molecular weight hydrocarbon polymer and a minor proportion of a highly polar basic nitrogen containing polymer, which article has been treated with a mineral acid, capable of diffusing into the shaped mixture and reacting at least partially with the highly polar basic polymer, said treatment being effected at a temperature above 60 DEG C. and said acid having a partial pressure, above the liquid, at the temperature of treatment, not exceeding 1 mm. Hg. The mineral acid is preferably sulphuric acid, perchloric acid or phosphoric acid. The highly polar basic nitrogen containing polymer may be any of those specified in Specifications 1,033,088, 1,060,101 or 1,104,632. The hydrocarbon polymer is preferably polypropylene. The articles may be in the form of fibres, fabrics or filaments and may be dyed.ALSO:A dye receptive article comprises a shaped mixture of a major proportion of a high molecular weight hydrocarbon polymer e.g. polypropylene and a minor proportion of a highly polar basic nitrogen containing polymer, which article has been treated with a mineral acid, capable of diffusing into the shaped mixture and reacting at least partially with the highly polar basic polymer, said treatment being effected at a temperature above 60 DEG C and said acid having a partial pressure, above the liquid, at the temperature of treatment, not exceeding 1 m.m. Hg. The articles in the form of fibres, filaments and fabrics may be dyed with acid dyes. An example describes dyeing a yarn made from a mixture of polypropylene and poly (2-vinyl-pyridine) with Capracyl Orange R. |
