Patent ID: 7456241

Claim:
A process for producing microfine adhesive blend powders comprising: (a) combining a particulate melt blended adhesive blend composition comprised of 40 to 99 weight percent polyolefin base resin selected from the group consisting of ethylene homopolymers, propylene homopolymers, copolymers of ethylene and propylene, copolymers of ethylene and C 4-8 α-olefins and ethylene-vinyl acetate copolymers and 1 to 60 weight percent maleic anhydride grafted polyolefin selected from the group consisting of ethylene homopolymers, copolymers of ethylene and C 3-8 α-olefins, propylene homopolymers and propylene-ethylene copolymers with a nonionic surfactant and polar liquid medium containing at least 50 weight percent water; (b) heating the mixture above the melting points of the blend components; (c) agitating the mixture to disperse the blend in the polar liquid medium; (d) cooling the dispersion below the melting points of the blend components; and (e) recovering the adhesive powder blend.