| 摘要 |
The tubular casing, especially sausage casing, based on cellulose, possesses a chlorine-free barrier layer against atmospheric oxygen and water vapour. This layer contains a statistical copolymer based on copolymerised vinyl monomers. The vinyl monomers have the general formula CH2 = CR<1>-X, in which R<1> is a methyl group or hydrogen and X is a (-OCOR<2>) group or is a (-CO2R<2>) group, where R<2> is an alkyl group having 1 to 20, preferably 1 to 10, in particular 1 to 5 C atoms. <??>In a further embodiment, the copolymer contains, in addition, copolymerised vinyl monomers of the formula mentioned, in which X is a (CO2H) group or a (CO2CN) group. |
