BFGoodrich Company

Advanced Technology Group, The BFGoodrich Company, Brecksvitle, Ohio 44141... 

Avon Lake Technical Center, The BFGoodrich Company, Avon Lake, OH 44012... 

I would Tike to thank M. L. Dannis for supplying the polymers and R. F. Scourfield for obtaining the nmr spectra. Thanks is also given to The BFGoodrich Company for permission to publish this work. 

Table II shows the results of combining SFFF and PCS measurements on a broad unimodal distribution of PVC in water. The manufacturer of the PVC (The BFGoodrich Company) reports the density as 1.4 g/cm. The results reported here were obtained in Prof. K. D. Caldwell s laboratory at the University of Utah. Six fractions were collected near the peak of a broad fractogram obtained in the SFFF experiment. Each fraction was measured using the BI-90. Given the reported density, the average diameter of each fraction was calculated using SFFF theory. These values are given in column 2. Column 3 shows the average diameter of each fraction as measured by PCS, and column 4 shows the calculated density using the measured PCS diameter and the raw SFFF result for each fraction.

BFGoodrich Company, R D Center, 9921 Brecksville Road, Brecksville, OH 44141... 

Acknowledgemente The authors appreciate the experimental assistance of F. W. Kunig and the permission of The BFGoodrich Company to publish this work. 

The polyester resin used in this study, MR 13006 (Aristech Corporation), was supplied as a 60-wt% solution in styrene monomer. The epoxy resin, a digly-cidyl ether of bisphenol A (Epon 828), was obtained from Shell Chemical Company. The reactive liquid rubber, an amino-terminated butadiene-acrylonitrile copolymer (ATBN 1300 x 16), was provided by the BFGoodrich Company. The resin was mixed with additional styrene monomer to maintain the ratio of reactive unsaturation in the polyester-to-styrene monomer at 1 to 3. We added 1.5 wt% of tert-butylperbenzoate initiator to the solution, which we then degassed under vacuum. The mixture was poured between vertical, Teflon-coated, aluminum plates and cured under atmospheric pressure at 100 °C. In the modified compositions, the rubber was first dissolved in the styrene monomer, and then all the other components were added and the solution cured as described. In all the compositions, the ratio of the amine functions with respect to the epoxy functions was kept at 1 to ensure complete cure of the epoxy. 

BFGoodrich Company, 33, 151 Case Western Reserve University, 319, 335... 

Mention was made in 1887 of electric arc silicas (2), and a detailed account by Potter has been available since 1907 (3). Industrial use of this process, which involves electricity costs, became possible only after further developments by the BFGoodrich Company (4). 

Amoco Production Company, 151 Aqualon Corporation, 89, 343 BFGoodrich Company, 113 Bayer AG, 175... 

In the 1930 sand 1940 s, pioneering workby Semon and Gresham at the BFGoodrich Company institutionalized the use of plasticizers, especially dioctyl phthalate (1, 82). Since that time, numerous monomeric and polymeric materials have been developed as plasticizers for thermoplastics, and by far, the use in PVC exceeds that of any other polymer. 

Finally, it is a pleasure to acknowledge that the symposium on which this book is based received financial support from the following organizations ACS Division of Polymer Chemistry, Inc., Petroleum Research Fund, U.S. Army Research Office, American Hoechst Corporation, Dow Chemical, U.S.A., E.I. du Pont de Nemours Company, Firestone Tire Rubber Company, GenCorp, BFGoodrich Company, Goodyear Tire Rubber Company, Hercules Incorporated, Monsanto Company, Nippon Zeon of American, Inc., Phillips Petroleum, Polysar Limited, Shell Development Company, and Uhiroyal Chemical Division. 

Hycar Manual HM-12, Hycar Nitrile Rubber in Adhesives, BFGoodrich Company, Elastomers and Latex Division. 

BFGoodrich Manual RLP-1, Hycaf Reactive Liquid Polymers Product Data, BFGoodrich Company, Specialty Polymers and Chemicals Division, June 1983. 

Caibopol Manual GC-67, Carbopol Water Soluble Resins, BFGoodrich Company, Specialty Pol- 45. ymers and Chemicals Division. 

Latex Manual L-14, Latexes in Adhesive Systems, BFGoodrich Company, Elastomers and La- 59. tex Division, January 1982. 

Chemical Corporation Robert C. Ringwood, Consultant Donald A. Seil, BFGoodrich Company and A. Nelson Wright, Synergistics Industries. 

Table 5.1 Grades of NBR Manufactured by the BFGoodrich Company (continued) ... 

Reprinted with permission from Elastomer Properties, E2, The BFGoodrich Company, Brecksville, OH. Copyright 1985,... 

The commercial gum rubbers are made in different grades to satisfy the needs of different applications. The preceding is an example of the grades of NBRs manufactured around 1985 at the BFGoodrich Company, Table 5.1. 

The sample used was Hycar 4051EP (ACM), a product of the BFGoodrich Company. The Hycar homoploymer, has a glass-transition temperature of -14 °C and a Mooney index (ML-(1 + 4) at 100 °C), in the range of 35-50. 

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