Boral IP Holdings (australia) Pty Limited

Westlake Royal Building Products Inc.

Ruetgers Polymer Ltd.

Brian Shaw

Russell Hill

Guy Crocco

Russ Majors

Kenneth Bruns

Brian Below

Bob Rathbone

Amitabha Kumar

Hamed Lakrout

Li Ai

Robert F Rathbone

Cassandra Hill

Li Al

Zhaozhou Zhang

Joel Charlton

Daniel Gomez

Composite panels and methods of preparation are described herein. In some embodiments, the composite panel can include a first fiber reinforcement, a polyurethane composite having a first surface and a second surface opposite the first surface, wherein the first surface is in contact with the first fiber reinforcement; and a cementitious material adjacent the first fiber reinforce-opposite the polyurethane composite. The polyurethane composite can be formed from (i) one or more isocyanates selected from the group consisting of diisocyanates, polyisocyanates, and mixtures thereof, (ii) one or more polyols, and (iii) a particulate filler. The fiber reinforcement can be formed from a woven or non-woven material, such as glass fibers. The composite panel can further include a material, such as a second fiber reinforcement and a cementitious layer, in contact with the second surface of the polyurethane composite. Articles comprising the composite panels are also disclosed.

Highly-filled polyurethane composites with fiber reinforcement

Polyurethane foams and methods of manufacturing are described herein. The foam can include (a) a polyurethane formed by the reaction of (i) one or more isocyanates selected from the group consisting of diisocyanates, polyisocyanates, and mixtures thereof, and (ii) one or more polyols; and (b) a filler. The amount of filler in the foam can be from 50 to 90% by weight, based on the total weight of the foam. The filler can include a plurality of fibers and/or a particulate filler. The polyurethane foams described herein are made without adding a surfactant to the reaction mixture. The density of the polyurethane foam can be at least 5 lb/ft.

Surfactant-free filled polyurethane foam and method of making same

Composite panels and methods of preparation are described herein. In some embodiments, the composite panel can include a first fiber reinforcement, a polyurethane composite having a first surface and a second surface opposite the first surface, wherein the first surface is in contact with the first fiber reinforcement; and a cementitious material adjacent the first fiber reinforcement opposite the polyurethane composite. The polyurethane composite can be formed from (i) one or more isocyanates selected from the group consisting of diisocyanates, polyisocyanates, and mixtures thereof, (ii) one or more polyols, and (iii) a particulate filler. The fiber reinforcement can be formed from a woven or non-woven material, such as glass fibers. The composite panel can further include a material, such as a second fiber reinforcement and a cementitious layer, in contact with the second surface of the polyurethane composite. Articles comprising the composite panels are also disclosed.

Polyurethane composites and methods of preparation are described herein. The methods of making the polyurethane composite can include mixing () at least one isocyanate selected from the group consisting of diisocyanates, polyisocyanates, and mixtures thereof, () at least one polyol, () an inorganic filler, and () an evaporative coolant in an extruder to form a mixture. The method also include extruding the mixture into a mold cavity, generating heat in the mold cavity from the reaction of the at least one isocyanate and the at least one polyol, and allowing the evaporative coolant to migrate to an interface between the mixture and the interior mold surface. The temperature of the mixture causes evaporation of the evaporative coolant at the interface thereby removing heat at the interface. Suitable evaporative coolants for use in the methods of making the polyurethane composites include hydrofluorocarbons and hydrochlorofluorocarbons.

Use of evaporative coolants to manufacture filled polyurethane composites

Methods are disclosed of forming a joint between a relatively hardened strip of material, such as a molded and cured conveyor belt strip, and an adjacent material that is in the process of curing. The curing material shrinks during the curing process, pulling away from the edge of the relatively hardened strip. The method includes moving the relatively hardened strip of material toward the curing, adjacent material strip to compensate for the shrinkage. An apparatus, for example, grips the relatively hardened strip of material and maintains a constant pressure at the interface between the relatively hardened strip of material and the curing material strip while the latter cures and shrinks.

Elastomeric thermo-mechanical compensator

Siding

Building material

A method of producing cementitious mixtures containing fly ash as one of the cementitious components, under air entrainment conditions is described. The method involves forming a mixture comprising water, cement, fly ash, optionally other cementitious materials, aggregate, conventional chemical admixtures, and an air entrainment agent and agitating the mixture to entrain air therein. Additionally, at least one amine sacrificial agent is included in the mixture. The cementitious mixtures and hardened concretes resulting from the method and fly ash treated with sacrificial agent, or air entrainment agent/sacrificial agent combinations, are also described.

Amine sacrificial agents and methods and products using same

Growing community of inventors

Elmendorf, TX, United States of America

Brian Shaw