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US 9,309,400 B2Granted
Composition for flexible membranes
AssigneeSika Technology AG
InventorsElyes Jendoubi, Ramin Djamshidian
Life of this patent
Estimating the term…
Abstract
A composition including a styrene block copolymer, a polar-modified styrene block copolymer, plant fibers and a polyolefin solid at 25° C., and to molded bodies, especially membranes, produced from such compositions.
Claims19
A composition comprising
- a) 20-90% by weight styrene block copolymer, selected from the group consisting of styrene/isoprene block copolymer (SIS), styrene/ethylene-butylene/styrene block copolymer (SEBS), styrene/ethylene-propylene/styrene block copolymer (SEPS) and styrene/ethylene-propylene block copolymer (SEP);
- b) 0.08-10% by weight maleic anhydride-grafted styrene block copolymer;
- c) 1-50% by weight plant fibers;
- and
- d) 0.05-20% by weight polyolefin that is solid at 25° C.;
- wherein the plant fibers have a ratio of the length of the plant fibers to the diameter of the plant fibers of 5:1-10:1.
3 more elements
A composition comprising:
- a) 20-90% by weight styrene block copolymer, selected from the group consisting of styrene/isoprene block copolymer (SIS), styrene/ethylene-butylene/styrene block copolymer (SEBS), styrene/ethylene-propylene/styrene block copolymer (SEPS) and styrene/ethylene-propylene block copolymer (SEP);
- b) 0.08-10% by weight maleic anhydride-grafted styrene block copolymer;
- c) 1-50% by weight plant fibers;
- and
- d) 0.05-20% by weight polyolefin that is solid at 25° C.;
- wherein:
- the ratio of the % by weight of the maleic anhydride-grafted styrene block copolymer:
- plant fibers is 0.08-0.2, based on the composition;
- and
- the plant fibers have a ratio of the length of the plant fibers to the diameter of the plant fibers of 5:1-10:1.
7 more elements
Dependencies are inferred from the claim text.