| abstract |
The invention relates to the technical field of production of medicinal rubber stoppers, and discloses a film-coated composition for a silicone-free rubber stopper. The composition contains two or more of the following components which are stored in combination or independently: Siloxane, a catalyst and a coupling agent, and optionally an organic solvent; wherein, the catalyst is a beta molecular sieve catalyst; relative to 100 parts by weight of the end-capped polydimethylsiloxane, the content of the catalyst is 0.01-3 parts by weight, the content of the coupling agent is 20-250 parts by weight, and the content of the organic solvent is 0-2000 parts by weight. The preparation process of the silicone-free rubber stopper provided by the invention is simple, does not affect the quality of the rubber stopper, does not require repeated processing, is easy to implement, and has obvious effects. |