Patent name Adhesive composition patent applicant Kraton Polymer Research Ltd. Principal applicant address Amsterdam inventor N.R.M. Dekker; J.G. Soswick; M. Van Dyke Application (Patent) No..8 Application date 2002.01.17 Certification date Approval announcement number 1706875 Audit announcement date 2005.12.14 Instruction CD-ROM number D0550 Main classification number C08F297/04 classification number C08F297/04; C09J153/02 Division Original application number.4 Priority Item 2001.1.18 US 60/262,554 Abstract The present invention relates to an adhesive composition comprising (i) one or more styrene block copolymers, (ii) a tackifier resin, and (iii) a Or a plurality of plasticizers, wherein the styrenic block copolymer or one of them has the general formula ACA(1), or (AC)subn/sub-X(2) wherein each A is independently aromatic Polymer block of vinyl compound, C is a mixed polymer block (B/I) of butadiene (B) and isoprene (I) in a weight ratio B: 1 of 30:70 to 70:30. The polymer block C has a glass transition temperature (Tg) up to -50[deg.] C. (determined according to ASTM E-1356-98), and n is In or integer greater than 2, X is a coupling agent residue, and wherein the tackifier resin has an aromaticity of 3-18% (relative percentage of aromatic protons using the measured H-NMR). Sovereignty Claims 1. Use of one or more styrene block copolymers of the following formula in printed board applications, ACA(1), or (AC)nX(2), where each A is independently aromatic vinyl The polymer block of the base compound, C, is a mixed polymer block (B/I) of butadiene (B) and isoprene (I) in a weight ratio B:I of 30:70 to 70:30. The polymer block C has a glass transition temperature (Tg) up to -50°C (as measured according to ASTM E-1356-98), n is an integer equal to or greater than 2, and X is the residue of the coupler.