Advances in Urethane

Mathematical Property Prediction Models for Flexible Polyurethane Foams.
Reinhart Schiffauer, ARCO Chemical Company, South Charleston, South Carolina
o Methods for Obtaining Mathematical Property Prediction Models o Mathematical Analysis o Transformed Variables o Individual Models for Each Property o Density o Hardness o Mechanical Properties o Resilience o Fatique o Maximum Block Temperature, Conventional Slabstock Foam o Individual Influencing Variables o Correlation of Ancillary Chemicals with the Base Formulation o Recommendations for Future Studies o References

The Effective Diffusivity of Cyclopentane and n-Pentane in PU and PUIR Foams by Thin-Slice Gravimetric Analysis.
J. Richard Booth and Deb Bhattarcharjee, Dept. of Chemical Engineering, Tennessee Technological University
o Purpose o Background o Research Approach o Discussion of Results o Conclusions o Nomenclature o References

Scorch Inhibitors for Polyurethane Slabstock Foams.
James H. Botkin, Ciba Specialty Chemicals Corp, Additives Division, Tarrytown, NY
o Introduction o Chemistry of Scorching in Polyurethane Foams o Test Methods for Polyol Stabilization and Scorch Inhibition o Antioxidant Systems for Polyol Stabilization and Scorch Inhibition o Industry Trends and Antiscorch Systems o Conclusions and Outlook o Acknowledgements o Appendix: List of Antioxidants o References

A Novel Architecture for Electro-Optic Polyurethane: Alternating Charge Transporting and Nonlinear Optical Chromophores.
Kevin D. Belfield and Suresh R. Sriram, Dept. of Chemistry, University of Detroit Mercy
o Introduction o Experimental o Results and Discussion o Conclusions o Acknowledgements o References

Advances in Moisture-Curable Siloxane-Urethane Polymers.
Janusg Kozakiewicz, Industrial Chemistry Research Institute, Warsaw, Poland
o Introductory Remarks o Experimental o Results and Discussion o Further Development of Siloxane-Urethane Polymers o References <