Patent ID: 7906581

Claim:
A method for manufacturing a hot melt adhesive containing an adhesion promoter in a continuous mode comprising: supplying a hot melt adhesive to at least one mixing device at a first predetermined rate; supplying an adhesion promoter at a second predetermined rate to form a homogeneous admixture containing the hot melt adhesive and the adhesion promoter, the adhesion promoter comprising a hydrolytic silane compound admixed with an aqueous buffer solution; subsequently reacting the admixture in at least one tubular reactor that is separate from the at least one mixing device at from about 160° C. to 200° C. for a predetermined residence time to allow the adhesion promoter to chemically bond with the hot melt adhesive and form an adhesion-promoter-treated hot melt adhesive; and collecting the adhesion-promoter-treated hot melt adhesive in a product receiver adapted for supplying the adhesion-promoter-treated hot melt adhesive to at least one finishing device.