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US 9,751,279 B2Granted
Composite elements composed from thermoplastic polymers and polyurethanes, and process for production thereof
AssigneeCovestro Deutschland AG
InventorsRolf William Albach, Hartmut Nefzger, Harald Knaup, Frank Hahn, Petra Venner, Monika Haselbach
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Abstract
The invention relates to composite elements comprising a thermoplastic polymer and an adjacent polyurethane bonded thereto, to a process for production thereof and to the use thereof.
Claims12
A composite element comprising (a) a thermoplastic adhered to (b) a product of the reaction of a reaction mixture consisting of
- (i) one or more isocyanates,
- (ii) one or more polyester polyols with functionality greater than 3, an ester group concentration of from 9 to 10 mol per 1 kg/polyester polyol, and a hydroxy number of from 60 to 150 mg KOH/g, based on the condensation of adipic acid or adipic acid and isophthalic acid or adipic acid and phthalic acid or adipic acid and isophthalic acid and phthalic acid with ethylene glycol and at least one or more diols from the group consisting of 1,2-propanediol, 1,4-butanediol, and 1,6-hexanediol and trimethylolpropane,
- (iii) one or more polyether polyols, and
- (iv) optionally a chain extender and/or a crosslinking agent, optionally in the presence of
- (v) a catalyst,
- (vi) a blowing agent and/or
- (vii) an auxiliary and/or an additive.
4 more elements
Dependencies are inferred from the claim text.