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US 12,012,531 B2Granted
Polyester polyol-based adhesives on the basis of furandicarboxylic acid obtained from renewable raw materials
AssigneeHenkel AG & Co. KGaA
InventorsAdrian Brandt, Horst Beck, Kerstin Schroeder, Alexander Kux, Dennis Bankmann, Helga Garmann, Stefan Tomke, Timo Pasemann, Kerstin Russbuelt
Life of this patent
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Abstract
The present invention relates to adhesives which contain a polyester polyol on the basis of furandicarboxylic acid obtained from renewable raw materials, and to a method for bonding substrates, in particular film-like substrates, using said adhesive.
Claims15
An adhesive for bonding plastics and/or metal substrates, the adhesive comprising at least one compound containing NCO groups and a polyester polyol;
- wherein the polyester polyol is the reaction product of—furandicarboxylic acid (FDCA), one or more aliphatic diacids and one or more polyols obtained from renewable raw materials, wherein the one or more polyols is selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, 1,3-propanediol, 1,2-propanediol, 1,4-butanediol, 1,4-pentanediol and a mixture thereof, and the furandicarboxylic acid is obtained from renewable raw materials and the adhesive has a viscosity in the range of from 200 to 10,000 mPas, measured at 10 to 60° C., using a Brookfield viscometer, in accordance with EN ISO 2555.
Dependencies are inferred from the claim text.