Novel wax for hot melt adhesive applications

A hot-melt adhesive composition, the adhesive composition comprising:

• (a) about 25% to about 35% by weight of a thermoplastic polymer resinselected from the group consisting of a rosin ester, a hydrogenated rosin, a high acid number rosin, a maleic modified rosin, a polymeric resin such as ethylene or ethylene vinyl acetate (“EVA”), ethylene acrylic acid copolymers, ethylene ethyl acrylate copolymers;
• ethylene methacrylic acid copolymers;
• ethylene/vinyl acetate/acid terpolymers, polymers derived from ethylene, polyamides, polyethylene, polyester, and polypropylene;
• (b) about 15% to about 40% by weight of a tackifier resin, the tackifier resin being characterized by having an acid number of about 3 to about 100;
• (c) about 15-35% by weight of a vegetable derived wax, the wax being characterized by having a melt viscosity of about 50 to about 70 SUS at 210 degrees F., and a Mettler drop point of about 130 degrees to about 170 degrees F.;
• and
• (d) the adhesive composition being characterized by having a DSC melt point of approximately 50 degrees C. to approximately 80 degrees C., the adhesive composition being capable of binding a fibrous cellulosic article to an article selected from the group consisting of a fibrous cellulosic article, wood, metal, glass and plastic.

A cellulosic article formed using a hot melt adhesive composition, the adhesive composition comprising:

• (a) about 25% to about 35% by weight of a thermoplastic polymer resin selected from ethylene or ethylene vinyl acetate, and copolymers and terpolymers thereof, the polymer having a vinyl acetate content of greater than approximately 18%, the polymer having a melt viscosity of about 100,000-about 600,000 cP at 302 degrees F.;
• (b) about 15% to about 40% by weight of a tackifier resin, the tackifier resin being characterized by having an acid number of about 3 to about 100;
• (c) about 15-35% by weight of a vegetable derived wax, the wax being characterized by having a melt viscosity of about 50 to about 70 SUS at 210 degrees F., and a Mettler drop point of about 130 degrees to about 170 degrees F.;
• and
• (e) the adhesive composition being characterized by having a DSC melt point of approximately 50 degrees C. to approximately 80 degrees C.

A composition for application to an article indented to be bonded to another article, the composition consisting essentially of a polymer resin, tackifier and a vegetable-derived wax,

• a. the polymer resin comprising about 30% to about 35% by weight of the composition, the polymer being a thermoplastic polymer selected from ethylene and ethylene vinyl acetate, and copolymers and terpolymers thereof, the polymer having a vinyl acetate content of approximately 18%, the polymer having a melt viscosity of about 105,000 cp at 302 degrees F.;
• b. the tackifier comprising about 30% to about 35% by weight of the composition, the tackifier being characterized by having an acid number of about 3 to about 10;
• and
• c. the wax comprising about 30% to about 35% by weight of the composition, the wax comprising a triglyceride having a melting point between 136-160 degrees F., the triglyceride being characterized by having an iodine value of between 2 and 5, the composition being characterized by a viscosity of between 10 to 200 cps at 140 degrees F., wherein the triglyceride comprises a fatty acid, the fatty acid being stearic acid.

A composition for application to an article indented to be bonded to another article, the composition consisting essentially of a polymer resin, tackifier and a vegetable-derived wax,

• a. the polymer resin comprising about 30% to about 35% by weight of the composition, the polymer being a thermoplastic polymer selected from ethylene and ethylene vinyl acetate, and copolymers and terpolymers thereof, the polymer having a vinyl acetate content of approximately 28%, the polymer having a melt viscosity of about 580,000 cp at 302 degrees F.;
• b. the tackifier comprising about 30% to about 35% by weight of the composition, the tackifier being characterized by having an acid number of about 3 to about 10;
• and
• c. the wax comprising about 30% to about 35% by weight of the composition, the wax comprising a triglyceride having a melting point between 136-160 degrees F., the triglyceride being characterized by having an iodine value of between 2 and 5, the composition being characterized by a viscosity of between 10 to 200 cps at 140 degrees F., wherein the triglyceride comprises a fatty acid, the fatty acid being stearic acid.