C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
400/3018
C08K 3/00 (2006.01) B23P 6/04 (2006.01) C09D 5/34 (2006.01) C09J 167/00 (2006.01) C09J 177/00 (2006.01) C09J 177/12 (2006.01)
Patent
CA 1139477
06-12-0546 BLOCK COPOLYMER HOT MELT ADHESIVE COMPOSITION AND METHOD OF FILLING A CAVITY ABSTRACT Hot melt adhesive compositions comprising a block copolymer, a particulate mineral reinforcing agent and glass fiber. The block copolymer is selected from the group con- sisting of copolyesters, copolyamides, copoly(esteramides) and copoly(ether-esters) melting at a temperature above about 150°C. and having from about 30 to about 70 weight percent of hard segments and from about 70 to about 30 weight percent of soft segments. The weight, ratio of block copolymer to particulate mineral reinforcing agent and glass fiber 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, and the weight ratio of particulate mineral reinforcing agent to glass fiber is in the range of about 1:3 to about 9:1. The compositions are parti- cularly useful for filling voids and cavities in substrates, which comprise applying excess adhesive composition as a hot melt into the cavity, spreading the adhesive composition to fill the cavity, cooling said adhesive composition and there- after sanding said composition to provide a surface even with the surrounding substrate.
336891
Donermeyer Donald D.
Martins Joseph G.
Mcfadden Fincham
Monsanto Company
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