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Film-coating physical aging

PROBLEMS OF POLYMERIC FILM COATING Physical Aging... [Pg.405]

Guo, J.-H. Robertson, R.E. Amidon, G.L. Influence of physical aging on mechanical properties of polymer free films the prediction of long-term aging effects on the water permeability and dissolution rate of polymer film-coated tablets. Pharm. Res. 1991, 8 (12), 1500-1504. [Pg.1746]

D.Y. Perera, P. Schutyser, C. De Lame, E.D. Vanden, Film formation and physical aging in organic coatings, ACS Symp. Series 648 (1996) 210-221. [Pg.579]

Stabilization of Carboxylated Styrene Butadiene (X-SBR) Latices Carboxylated SBR latices are used as adhesives in applications where durability and flexibility are desired. Some of the major uses for X-SBR latex are in tufted carpet backing, paper coatings, wall and vinyl floor tile adhesives, and pressure-sensitive adhesives. Typically, discoloration is the first measure of the degradation of an X-SBR latex. Discoloration of a dried latex film can often be related to a loss of the physical properties and subsequently, to inferior performance in an adhesive formulation. Figure 9 illustrates the effects of adding an effective antioxidant system to an X-SBR latex on the level of discoloration as a result of static oven aging at 150°C (300°F). The addition of AO-4 alone... [Pg.446]

Physical blends of NR and 1,2-polybutadiene (1,2-PBD), a thermoplastic rubber (Figures 1.12, 1.13 and 1.14) combine the good physical and superior ageing properties of 1,2-PBD with the unique elastomeric/hysteresis characteristics of NR. The NR/1,2-PBD blends find application in films, footwear, adhesives, coatings, etc. and also have the potential for use in radiation related fields. [Pg.36]

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See also in sourсe #XX -- [ Pg.1743 ]



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