| 摘要 |
Diolefines and their aryl and halogen derivatives and polymers thereof including rubber, guttapercha and balata are combined with liquid hydrochloric acid without a solvent. The product is suitable for the formation of thin transparent sheets which are relatively stable at 100 DEG C. Any unvulcanized rubber may be used as initial material, whether milled or not. Milled rubber produces more flexible sheets having greater solubility. The products may contain 28 per cent or more of chlorine. The Specification as open to inspection under Sect. 91 includes the treatment of the initial materials with liquid hydrogen halides. This subject-matter does not appear in the Specification as accepted.ALSO:Polymers of diolefines and their aryl and halogen derivatives, including rubber, guttapercha and balata are combined with liquid hydrochloric acid without a solvent. The product is suitable for the formation of thin transparent sheets which are relatively stable at 100 DEG C. Any unvulcanized rubber can be used as initial material, whether milled or not. Milled rubber produces more flexible sheets having greater solubility. The products may contain 28 per cent or more of chlorine. The Specification as open to inspection under Sect. 91 includes the treatment of the initial materials with liquid hydrogen halides. This subject-matter does not appear in the Specification as accepted.
|
