发明名称 |
Low viscosity hot melt pressure sensitive ashesive compositions |
摘要 |
A low melt viscosity hot melt pressure sensitive adhesive composition having enhanced tack properties is provided. The composition is based on an S-I-S block copolymer having polystyrene and polyisoprene block segments blended with a petroleum tackier resin which is the Friedel Crafts polymerization product of (i) a cracked petroleum feed containing C5 olefins and diolefins or a mixture of C5 and C6 olefins and dioelefins copolymerized with (ii) from about 5 to 15% by weight of a monovinyl aromatic monomer having 8 or 9 carbon atoms, e.g., styrene. The composition optionally also includes a polystyrene-polyisoprene diblock copolymer and a processing oil. The composition may be readily applied as solvent-free melt to various substrates using coating die technology because of its low melt viscosity at coating temperatures.
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申请公布号 |
US5853874(A) |
申请公布日期 |
1998.12.29 |
申请号 |
US19970898018 |
申请日期 |
1997.07.22 |
申请人 |
EXXON CHEMICAL PATENTS, INC. |
发明人 |
JACOB, LUTZ ERICH |
分类号 |
C09J153/02;(IPC1-7):C08L9/06;C09J7/02 |
主分类号 |
C09J153/02 |
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