216 results about "Styrene-isoprene-styrene block copolymer" patented technology

A composite material which has excellent ballistic performance and has improved flexibility. Surprisingly, it has been found that a combination of poly(alpha-olefin) fiber and matrix resin provides these desirable product features. The resin matrix is a block copolymer of a conjugated diene and a vinyl aromatic monomer, preferably a styrene-isoprene-styrene block copolymer, that is applied as an aqueous composition. The fiber has a tenacity of at least about 35 g / d and a tensile modulus of at least about 1200 g / d. The composite has a total density equal to or less than about 100 g / m2 and a stiffness of less than about 2.5 pounds (1.14 kg) for a two layer structure of the composite, and a total areal density equal to or less than about 190 g / m2 and a stiffness of less than about 3.0 pounds (1.36 kg) for a four layer structure of the composite. The Peel Strength for a two layer structure of less than about 1.0 pounds (0.45 kg) for a two layer structure of the composite, and less than about 0.7 pounds (0.32 kg) for a four layer structure of the composite. The process of this invention permits fabrication of these desirable products in a cost-effective manner. Body armor made from the composite has improved flexibility and excellent ballistic characteristics.

This invention provides a patch with less skin stimulation, excellent in long time store stability and heat stability and having favorable tack during use. The patch comprising a styrene-isoprene-styrene block copolymer, polyisobutylene, tackifier, plasticizer and pharmaceutically effective ingredient, in which two or more kinds of polyisobutylene of different average molecular weight are used in combination and the viscosity of the adhesive of the patch is between 1500 and 30,000 poise (at 60° C.) and the tack of the patch is from 5 to 200 g / 10 mm.

The present invention provides a transdermal external patch, which is an external patch in which an adhesive layer is laminated on a support, wherein the adhesive layer contains styrene-isoprene-benzene as an essential component. An ethylene block copolymer (SIS), a tackifying resin, and a softener, and flurbiprofen as an active ingredient are mixed therein. The external patch containing flurbiprofen makes possible the long-term stable release of the flurbiprofen contained, and the preparation has high stability and very high drug release.

A two-part adhesive composition exhibiting improved elasticity wherein its composition includes one or more acrylate or methacrylate ester monomers, a sulfur bearing compound, preferably a sulfonyl chloride, an amine promoter, preferably, an amine aldehyde reaction product, and a thermoplastic block copolymer component selected from the group consisting ofa. a linear styrene-butadiene-styrene copolymerb. a radial styrene-butadiene-styrene block copolymer with a plasticizer,c. a linear or radial styrene-isoprene-styrene block copolymer, andd. a linear or radial styrene-butadiene-isoprene-styrene block copolymer,and mixtures thereof.