Reinforced shaped article
AssigneeImperial Chemical Industries PLC
InventorsRichard Wood, Gerald N. Nicholl
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Abstract
The invention relates to a method for producing shaped articles comprising a thermoplastics show surface and a backing layer of a rigid polyurethane or polyisocyanurate foam by applying a foamable polyurethane or polyisocyanurate composition which is substantially free from appreciable amounts of halocarbon blowing agents, in a closed mould to one face of a shaped thermoplastic sheet provided to one of the matching parts constituting said mould.
Claims10
Shaped article having a show surface of thermoplastic material with a reinforcement of a rigid polyurethane or polyisocyanurate foam, characterised in that the foam is substantially free from halocarbon blowing agent.
In a process for producing a shaped article comprising a thermoplastic show surface and a backing layer of a rigid polyurethane or polyisocyanurate foam firmly bounded to the thermoplastic show surface, by applying a foamable polyurethane or polyisocyanurate composition in a closed mould to one face of a shaped thermoplastic sheet provided to one of the matching parts constituting said mould, the improvement which consists in using a foamable polyurethane or polyisocyanurate composition which is substantially free from halocarbon blowing agents.
In a process for producing a shaped article comprising a thermoplastic show surface consisting of an acrylic sheet or a laminate of an acrylic polymer and an acrylonitrile/butadiene/styrene copolymer and a backing layer of a rigid polyurethane or polyisocyanurate foam firmly bounded to the thermoplastic show surface, by applying a foamable polyurethane or polyisocyanurate composition in a closed mould to one face of a shaped thermoplastic sheet provided to one of the matching parts constituting said mould, the improvement which consists in using a foamable polyurethane or polyisocyanurate composition which is substantially free from halocarbon blowing agents.
Dependencies are inferred from the claim text.