Patent ID: 7902288
Filing Date: 2011-03-08
Classification: C08L,C09J,C09K

Abstract:
1. A method of making a sealant material, the method comprising: providing a diblock copolymer, wherein the diblock copolymer comprises a plurality of styrene zones and a plurality of rubber zones, wherein the rubber chains are physically crosslinked between the styrene zones and wherein the styrene zones have a glass transition temperature; and combining the diblock copolymer with mineral oil without the addition of water or volatile solvents at a processing temperature of less than about the glass transition temperature of the styrene zones, wherein the mineral oil absorbs into the rubber zones of the diblock copolymer and comprises an amount of at least 50% by weight of the sealant material, wherein the processing temperature is maintained at about 80° C. or less such that the physical crosslinking of the diblock copolymer is retained, and wherein the resulting sealant material is substantially free of petroleum wax, water, and volatile solvents.