Mechanical and thermal aspects of polyurethane elastomers extended with diamines

5 Mechanical and thermal aspects of polyurethane elastomers extended with diamines [Pg.162]

Much of outcomes research is a systematic attempt to exploit what is known and make it better (Kevin Kelly) [Pg.162]

A series of polyurethane-ureas (PUUs) has been synthesized by us, based on the aromatic diisocyanates DBDI or MDI. The materials were synthesized with two SS macrodiols, the polyether macrodiol PTMO or the polyester SS, PEA. [Pg.162]

In the first stage of our study, three aromatic diamines were used as chain extenders a non-symmetrical chain extender, 2,4-toluene diamine (TDA) two symmetric aromatic diamines 4,4 -methylene dianiline (MDA) and 4,4 -diamino-dibenzyl (DAB). TDA was used in order to improve the mechanical properties and thermal stability. The materials were synthesized by a two steps polyaddition reaction as [Pg.162]

49 Hard segment of a DBDI based PUU extended with aromatic diamine DAB [Pg.164]

Big Chemical Encyclopedia