scholarly journals Surface Chemistry of High Polymers. III. Some Relationships between the Monolayer of Non-electrolytic Linear Polymers

1954 ◽  
Vol 27 (2) ◽  
pp. 80-84 ◽  
Author(s):  
Hiroshi Hotta
Keyword(s):  
Surface Chemistry ◽  
Linear Polymers ◽  
High Polymers

Some New Compositions Based on Condensation Rubbers

1950 ◽  
Vol 23 (3) ◽  
pp. 608-614
Author(s):  
D. A. Harper ◽  
W. F. Smith ◽  
H. G. White
Keyword(s):  
Cellulose Acetate ◽  
Dibasic Acid ◽  
Linear Polymers ◽  
Rubber Industry ◽  
Polyvinyl Formal ◽  
Major Interest ◽  
Acetate Mixture ◽  
Important Branch ◽  
Polymeric Plasticizer ◽  
High Polymers

Abstract By the condensation of a dibasic acid and direactive alcohol or amine, linear polymers are produced. Under certain conditions rubbery polymers are obtained, and a number of condensation rubbers with outstanding physical properties have been described. One of these, a diisocyanate-modified polyester amide (Vulcaprene-A) has been found to be compatible with nitrocellulose, polyvinyl formal, cellulose acetate, degraded vegetable tanned leather, gelatin, and glue. These mixtures can be vulcanized by formaldehyde-liberating agents used to cure Vulcaprene, and in most cases the curing reaction appears to take place not only with the Vulcaprene but with other high polymers. Combinations of Vulcaprene and cellulose acetate and of Vulcaprene and degraded leather are of great interest to the leather cloth industry, as they can be spread on to cloth to give coatings with outstanding flex and abrasion resistance. The Vulcaprene-cellulose acetate mixture is of value also as an abrasion-and flex-resisting coating for rubber proofings to give products which, while cheap to produce, are likely to give superior service to prewar leather cloths. This type of coating can be applied also to paper. The diisocyanate modified polyester amide behaves not only as a novel vulcanizable polymeric plasticizer, but, in combination with these high polymers, gives new products of major interest to an important branch of the rubber industry.

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