C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
117/183, 400/301
C08K 3/00 (2006.01) B23P 6/04 (2006.01) C08K 7/26 (2006.01) C09D 5/34 (2006.01) C09J 167/00 (2006.01) C09J 177/00 (2006.01) C09J 177/12 (2006.01)
Patent
CA 1139476
06-12-0548 BLOCK COPOLYMER HOT MELT ADHESIVE COMPOSITIONS AND METHOD OF USE ABSTRACT Hot melt adhesive compositions comprising a block copolymer, particulate mineral reinforcing agent, glass fiber and hollow inorganic silicate microspheres. The block co- polymer is selected from the group consisting of copolyesters, copolyamides, copoly(esteramides) and copoly(ether-esters) melting at a temperature above about 150°C. and having from about 30 to about 10 weight percent of hard segments and from about 70 to about 30 weight percent of soft segments. The weight ratio of block copolymer to partiçulate inorganic re- inforcing agent, glass fiber and silicate microspheres is in the range of about 3:7 to about 3:2, the weight ratio of block copolymer to glass fiber is at least about 3:4, the weight ratio of particulate mineral to glass fiber is in the range of about 1:3 to about 9:1 and the volume percentage of hollow inorganic silicate microspheres is less than about 12. The compositions are particularly useful for filling voids and cavities in substrates.
336890
Donermeyer Donald D.
Martins Joseph G.
Mcfadden Fincham
Monsanto Company
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