| 摘要 |
<p>A mixture of an olefinically unsaturated compound and sulphur dioxide is grafted on to a preformed solid substrate of an organic polymer having a molecular weight of at least 5,000 by activation with irradiation with at least 100 rads of ionizing radiation having a minimum energy of 100 ev. The preformed polymer may be, inter alia, polyethylene, polypropylene, polyvinyl fluoride, cellulose, polyoxymethylene, polyethylene terephthalate, a phenol-formaldehyde condensation product, or a polyamide. The olefinically unsaturated monomer may be, inter alia, ethylene, styrene, butadiene, p-bromoallylbenzene, or allyl alcohol. Radiation may be by electrons, protons, neutrons, alpha-particles or deuterons. The reaction medium may be any inert material and the reaction may take place at any temperature. Radiation may be carried out in the presence of the monomer mixture.</p> |
