Biodegradable filter material for production of tea or coffee bags contains a cellulose derivative plasticized with a plasticizer, e.g. glycerol, or with a biodegradable polymer, e.g. aliphatic polyester

摘要

Filter material containing biodegradable cellulose derivative(s) plasticized with a plasticizer such as triacetin, glycerol, triphenyl phosphate, ethyl lactate, caprolactone etc. (15 compounds listed) and/or with a biodegradable polymer, i.e. aliphatic or partly aromatic polyester-amide, polyester or polyester-urethane, aliphatic or aliphatic-aromatic polyester-carbonate. Filter material containing biodegradable cellulose derivative(s) (I), in which (I) contains 0.05-50 parts by weight of a plasticizing substance (II) to 100 parts (I). Substance (II) comprises (II-a) plasticizers or (II-b) biodegradable polymers such as aliphatic or partly aromatic polyester-amides, polyesters or polyester-urethanes, and aliphatic or aliphatic-aromatic polyester-carbonates.