초록 ▼

Compositions, including hydrocarbon elastomeric block copolymers, such as styrene-ethylene-butylene-styrene and styrene-butadiene-styrene with mineral oil and essentially linear (i.e. non-cross-linked) polysiloxanes are made transparent by using polysiloxanes which are miscible with mineral oil. A p

Compositions, including hydrocarbon elastomeric block copolymers, such as styrene-ethylene-butylene-styrene and styrene-butadiene-styrene with mineral oil and essentially linear (i.e. non-cross-linked) polysiloxanes are made transparent by using polysiloxanes which are miscible with mineral oil. A preferred polysiloxane is polymethyloctyl siloxane. Transparent films, bags, tubes and other articles, especially useful in medical applications, such as catheters, blood tubes and blood bags, can be processed from the compositions.

대표청구항 ▼

A thermoplastic composition which exhibits improved optical clarity comprising a substantially uniform mixture of (A) an elastomeric thermoplastic hydrocarbon block copolymer in an amount of at least about 30% of the total weight of the composition; (B) mineral oil in an amount of from about 5 to ab

A thermoplastic composition which exhibits improved optical clarity comprising a substantially uniform mixture of (A) an elastomeric thermoplastic hydrocarbon block copolymer in an amount of at least about 30% of the total weight of the composition; (B) mineral oil in an amount of from about 5 to about 60% by weight of the composition; and (C) a polysiloxane which is miscible with mineral oil and which has a viscosity within the range of from about 20 to about 1,000,000 centistokes at room temperature in an amount of from about 0.1 to 12%, by weight, of the composition.