Glass-polycarbonate laminate
First Claim
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1. An improved laminate of glass and polycarbonate resin bonded by means of a first organopolysiloxane-polycarbonate copolymer adhesive layer disposed between the glass layer and the polycarbonate layer, the improvement comprising a second polyvinylidene chloride adhesion promoting layer disposed between said first adhesive layer and said glass layer.
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Abstract
A glass-polycarbonate laminate wherein a glass layer is bonded to a polycarbonate layer by a bonding system comprised of an organopolysiloxane-polycarbonate block copolymer bonding agent and a polyvinylidine chloride primer, said primer being applied onto either the glass layer or onto said block copolymer.
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7 Claims
- 1. An improved laminate of glass and polycarbonate resin bonded by means of a first organopolysiloxane-polycarbonate copolymer adhesive layer disposed between the glass layer and the polycarbonate layer, the improvement comprising a second polyvinylidene chloride adhesion promoting layer disposed between said first adhesive layer and said glass layer.
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6. An improved laminate of glass and polycarbonate resin containing at least one glass lamina bonded to at least one polycarbonate lamina by means of an intermediate bonding layer of an organopolysiloxane polycarbonate copolymer adhesive disposed between said glass lamina and said polycarbonate resin lamina, the improvement comprising an adhesion promoting primer layer of polyvinylidene chloride disposed intermediate said glass lamina and said organopolysiloxane-polycarbonate copolymer layer.
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7. A process for forming a polycarbonate-glass laminate comprising the steps of (i) applying composition comprised of a polyvinylidene chloride emulsion to a glass lamina;
- (ii) evaporating off the water from said emulsion thereby forming a primer layer on said glass lamina; and
, (iii) adhesively bonding the primed glass lamina to a polycarbonate lamina with an adhesive which comprises an organopolysiloxane-polycarbonate block copolymer.
- (ii) evaporating off the water from said emulsion thereby forming a primer layer on said glass lamina; and
Specification