By Rudolph D. Deanin (Eds.)
content material: Radial block thermoplastic rubbers / J.R. Haws --
a brand new thermoplastic syndiotactic 1,2-polybutadiene. I. creation, basic homes, and processing / Yasumasa Takeuchi, Akira Sekimoto, and Mitsuo Abe --
a brand new thermoplastic syndiotactic 1,2-polybutadiene. II. functions / Yasumasa Takeuchi, Akira Sekimoto, and Mitsuo Abe --
K-resin BDS polymer: a brand new transparent effect resistant polystyrene / L.M. Fodor, A.G. Kitchen, and C.C. Biard --
Random copolycarbonates; characterization and comparative houses of polymers containing tetrachlorinated bisphenols / Eugene C. Gilbert and Gordon D. Brindell --
Polyethersulphone--a new extreme temperature engineering thermoplastic / Victor J. Leslie, John B. Rose, George O. Rudkin, and Joseph Feltzin --
Polyphenylene sulfide: a brand new commercial resin / G.C. Bailey and H. Wayne Hill, Jr. --
Polyimides: chemistry, processing, houses / S.L. Kaplan and S.S. Hirsch --
Polyaminobismaleimides / M.A.J. Mallet and F.P. Darmory --
Processable polymides / F.P. Darmory --
Catalytic trimerization of fragrant nitriles for synthesis of polyimide matrix resins / Li-Chen Hsu --
Poly(p-oxybenzoyl) platforms: homopolymer for coatings; copolymers for compression and injection molding / Roger S. typhoon and Steve G. Cottis --
Round-table dialogue / Rudolph D. Deanin.
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Additional info for New Industrial Polymers
However, after flexing, the polybutadiene domains show some orientation with the appearance of fine light lines between the arrays of polybutadiene. These are thought to be microcrazes which would account for the good lifetime i n flexure of the resins. A similar mechanism i s thought to account for toughening i n rubber-modified polystyrene and, therefore, seems l o g i c a l that i t might apply here too. Chemical Resistance. The chemical resistance of these resins i s similar to that of polystyrene (see Table VII).
Original, as well as aged physicals, were o b t a i n e d for all of t h e copolycarbonates e x c e p t TCBF. T h e most interesting properties were obtained from copolymers o f TCBF u n d e r t h e conditions studied. Copolymers containing TCBF possessed properties t h a t in general were e q u a l t o or better t h a n either bisphenol A or tetrachlorobisphenol A homopolycarbonates, e . g . , t h e bisphenol A copolymer containing 7 0 % TCBF was f o u n d t o h a v e a T g of 1 9 0 ° C . This latter copolycarbonate, as well as that p r e p a r e d f r o m TCBF a n d a mixture o f chlorinated isomers had significantly better stress cracking resistance to perchlorinated hydrocarbon solvents than either bisphenol A or tetrachlorobisphenol A homopolymers.
Takeuchi, Y. H a r i t a and A. Sekimoto, Conference on " D e g r a d a b i l i t y o f Polymers and Plastics" 27, 28 Nov. ; ACS Symposium Series; American Chemical Society: Washington, DC, 1974. 3 A New Thermoplastic Syndiotactic 1,2-Poylbutadiene. II. , No. , L t d . (JSR). The 1, 2-PBD is a low c r y s t a l l i n e polymer (15-25% c r y s t a l linity) and a unique thermoplastic having property between p l a s t i c and rubber. On the other hand, the 1, 2-PBD is regarded as a novel f u n c t i o n a l polymer, namely, as a r e a c t i v e t h e r m o p l a s t i c .