Advanced bonding agent
AssigneeDdp Specialty Electronic Materials US, LLC
InventorsSTEFAN DEHNICKE, KAI ZIEGLER, PHILIPP ZUTAVERN, ANNA OSICHOW, GERD BECKER
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Abstract
The invention provides a bonding agent particularly suited for bonding metal to castable polyurethane, polyesters and or polyamides.
Claims60
A bonding agent for bonding castable polyurethane and/or polyamides comprising:
- (1) a phenolic resol resin;
- (2) polyvinylbutyral;
- (3) a solvent or solvent mixture that is capable of solvating ingredients (1) and (2), while being sufficiently volatile to be removed at atmospheric pressure.
A method for adhering a first substrate that is made of material selected from polyurethane, polyester, polyamide and metal to a second substrate that is made of material selected from polyurethane, polyester, polyamide and metal, the method comprising the steps:
- (1) providing an assembly that comprises a first substrate that is substantially made of material selected from polyurethane, polyester, polyamide and metal and a second substrate that is substantially made of material selected from polyurethane, polyester, polyamide and metal, wherein the first substrate and the second substrate have sandwiched between them a layer of bonding agent comprising a (i) phenolic resol resin, (ii) polyvinylbutyral and a solvent or solvent mixture that is capable of solvating ingredients (i) and (ii), while being sufficiently volatile to be removed at atmospheric pressure;
- and
- (2) heating the assembly to 90-200° C. for a time sufficient to form an adhesive bond between the first and second substrates,
- wherein the first and second substrates are not both metal.
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Dependencies are inferred from the claim text.