Monsanto Company

Other

George E Cartier

Peter H Farmer

Carl P Piretti

Robert H Simon

James R Moran

James A Snelgrove

Dean L Kavanagh

A wrinkle-free bilayer glazing panel comprising sequentially: a) a sheet of glass; b) a layer of plasticized partial polyvinyl butyral; c) a transparent polyester layer; and d) a layer of cross-linked, self-healing polyurethane.

Bilayer glazing panel

A method of forming a bilayer glazing panel by providing an optically clear prelaminate of stretched polyester film coated with a cross-linked, self-healing polyurethane layer; assembling the prelaminate with a layer of plasticized partial polyvinyl butyral with the side of the polyester film without the polyurethane layer in facing contact with a subjacent textured surface of the partial polyvinyl butyral layer; clamping the assembled layers in a perimeter anchoring system; sequentially carrying out the following steps i), ii), iii), and optionally the above clamping step within an air autoclave; i) deairing the interface between the polyester film and plasticized partial polyvinyl butyral; ii) forcing localized regions of the layers within the perimeter anchoring system against a sheet of glass; and iii) subjecting the assembly of step ii) to elevated temperature and pressure while the plastic layers remain clamped within the perimeter anchoring system to firmly bond the plastic layers and glass sheet together.

Method of forming a bilayer glazing panel

A polymeric laminate for use with a glass layer in a laminated bilayer or anti-lacerative shield application comprises a first layer of moisture tolerant plasticized polyvinyl butyral containing (a) adhesion control agent(s) and (b) residual hydroxyl content which optimize glass adhesion and optical performance over a range of moisture contents in the first layer likely to be encountered in use, i.e. 0.2 to 0.5 weight % and 2 to 2.8 weight %, such first layer being in face to face contact with a second layer of a clear polymer film or coating having a combination of performance properties desirable for these applications. Preferred second layers are biaxially stretched polyester and thermoset aliphatic polyurethane.

Laminated safety glass and polymeric laminate for use therein

Polyvinyl butyral (PVB) resin lightly cross-linked through intermolecular linkages developed through increase PVB molecular weight and the modulus of a plasticized sheet formed therefrom intended for use in laminated safety glass assemblies.

Cross-linked polyvinyl butyral sheet

A polymeric laminate of a sheet containing plasticized polyvinyl butyral chemically linked by urethane groups to a polyurethane layer which is preferably thermoset.

Polymeric laminate for safety glass

A transparent polymeric laminate of plasticized polyvinyl butyral sheet chemically linked by urethane groups to a thermoset polyurethane layer formed as the reaction product of a cross-linkable mixture containing diisocyanate and polyether polyol containing primary or secondary hydroxyl groups and having a molecular weight between about 250 to about 8000.

Transparent polymeric laminate

Polyvinyl butyral (PVB) resin lightly cross-linked through stable intermolecular linkages developed, for example, through use of a dialdehyde or trialdehyde, to selectively increase PVB molecular weight and the modulus of a plasticized sheet formed therefrom intended for use in laminated safety glass assemblies.

Cross-linked polyvinyl butyral

Extruded polyvinyl butyral (PVB) sheet roughness is controlled by use of PVB resin lightly cross-linked through stable intermolecular linkages.

Polyvinyl butyral sheet roughness control

Extruded polyvinyl butyral (PVB) sheet roughness is controlled by use of PVB resin lightly cross-linked through intermolecular linkages developed through use of the hydrated form of formaldehyde.

An abrasion resistant coating composition suitable for application to a substrate comprises a partially fluorinated polyvinyl acetal resin and polysilicic acid.

Abrasion resistant coating compositions

An abrasion resistant coating composition suitable for application to a substrate comprises a polyvinyl acetal resin, a fluorinated alcohol and polysilicic acid.

Disclosed herein is a laminated glazing unit for vehicle and architectural uses which comprises glass, an interlayer and a high nitrile polymer in a laminated configuration wherein the interlayer is sandwiched between the glass and the high nitrile polymer.

Growing community of inventors

Springfield, MA, United States of America

George E Cartier