Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1986-01-15
1988-03-22
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
264134, 264135, 264259, 2643286, 26432816, 26433119, 264338, 4284256, B29C 4516, B32B 2740
Patent
active
047327251
ABSTRACT:
A process for the production of a safety pane comprising a sheet of glass and at least one polyurethane-based layer having energy-absorbent properties. The polyurethane-based layer having energy-absorbent properties is formed directly on the sheet of glass by the reactive injection, under a pressure between 2 and 10 bars, between said sheet of glass and a rigid countermold, of a reactive mixture of an isocyanate component having a viscosity under 5000 centipoises at 40 degrees C. and a polyalcohol component, with the isocyanate component containing at least one aliphatic or cycloaliphatic diisocyanate, or a prepolymer of these isocyanates, with the polyalcohol component containing at least one long difunctional polyalcohol having a molecular mass between 500 and 4000 and at least one short diol as a chain extending agent.
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patent: 4232080 (1980-11-01), Orain et al.
patent: 4350739 (1982-09-01), Mohiuddin
patent: 4590030 (1986-05-01), Gillner et al.
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de Toytot Francois
Moncheaux Michel-Jean
Saint-Gobain Vitrage
Tentoni Leo B.
Thurlow Jeffery
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