Method for welding a polyolefin plastic and a plastic based on a polymer containing carbonyl groups
AssigneeHenkel AG & Co. KGaA
InventorsPablo Walter, Norman Friedrich, Lina Gonzalez, Thomas Haertig, Hendrik Luetzen, Dirk Kasper
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Abstract
Disclosed is a method for welding a polyolefin plastic and a plastic based on at least one polymer containing carbonyl groups, using a primer which contains, in relation to the proportion of polymer, at least 20 wt. % of a polymer that comprises maleic anhydride or maleic anhydride derivative units. Also disclosed are correspondingly welded products.
Claims20
A method for welding a polyolefin plastics material that has a first joining zone to a plastics material based on at least one polymer which contains carbonyl groups that has a second joining zone, using a primer, the method comprising:
- providing the polyolefin plastics material,
- providing the plastics material based on at least one polymer which contains carbonyl groups,
- preheating the first joining zone of the polyolefin plastics material,
- applying the primer to the preheated first joining zone,
- bringing the first joining zone provided with the primer into contact with the second joining zone of the plastics material based on at least one polymer which contains carbonyl groups, and
- integrally bonding the first joining zone to the second joining zone
- wherein the primer contains, based on the polymer proportion of said primer, at least 20 wt. % of at least one polymer that comprises maleic acid anhydride units or maleic acid anhydride derivative units.
Dependencies are inferred from the claim text.