Hot melt adhesives of improved melt viscosity stability

C - Chemistry – Metallurgy – 08 – L

Patent

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400/1709, 400/18

C08L 23/16 (2006.01) C08K 3/38 (2006.01) C08K 5/55 (2006.01) C08L 91/08 (2006.01) C08L 93/04 (2006.01) C09J 123/16 (2006.01) C09J 157/02 (2006.01) C09J 191/08 (2006.01)

Patent

CA 1050675

ABSTRACT OF THE DISCLOSURE The viscosity stability of hot melt adhesives containing an elastomeric linear EPDM, branched ethylene/ propylene copolymer, or propylene/hexene-1 dipolymer is markedly improved by inclusion in the adhesive comp- sition of boric acid, boric anhydride, or oric acid ester, in combination with a phenolic antioxidant.

196504

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