Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2004-08-05
2011-10-18
Eashoo, Mark (Department: 1767)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C524S505000
Reexamination Certificate
active
08039553
ABSTRACT:
The present invention relates to an adhesive composition comprising (A) a block copolymer composition comprising a block copolymer (a) formed from at least two polymer blocks composed mainly of a monoalkenyl aromatic compound and at least one polymer block composed mainly of a conjugated diene compound and a block copolymer (b) formed from a polymer block composed mainly of a monoalkenyl aromatic compound and a polymer block composed mainly of a conjugated diene compound, wherein the block copolymer (a) has a GPC peak molecular weight of 60,000 to 110,000 in terms of standard polystyrene, the polymer block composed mainly of a monoalkenyl aromatic compound has a peak molecular weight of 10,000 to 30,000 and a molecular weight distribution Mw/Mn of 1.0 to 1.6, the block copolymer composition (A) has a content of the block copolymer (b) of 50 to 90% by weight, the block copolymer composition (A) has a total monoalkenyl aromatic compound content of more than 40% by weight and 50% by weight or less, the conjugated diene unit has a vinyl bond content of less than 20%, and the block copolymer composition (A) has a viscosity in a 15% toluene solution of 10 to 40 cP at 25° C.
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English Language Abstract of JP 3-026747.
English Language Abstract of JP 5-263056.
English Language Abstract of JP 6-107745.
English Language Abstract of JP 52-140544.
English Language Abstract of JP 60-226580.
English Language Abstract of JP 5-093176.
English Language Abstract of JP 7-506747.
English Language Abstract of JP 6-228522.
English Language Abstract of JP 2004-238548.
English Language Abstract of JP 61-278578.
English Language Abstract of JP 63-248817.
English Language Abstract of JP 2001-271049.
English Language Abstract of JP 3-285978.
English Language Abstract of JP 2000-309767.
Fujiwara Masahiro
Nakamichi Yukinori
Eashoo Mark
Greenblum & Bernstein PLC
Japan Elastomer Co., Ltd.
Scott Angela C
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