Abstract: Simulated leather materials are described. These are obtained by treating a substrate having a microporous surface film layer by known processes for producing synthetic leathers. The microporous film is obtained by placing a dope containing film-forming polymer, a solvent therefore and an ionizable organic compound on a support and passing the dope bearing support through a coagulation bath under the application of an electric current. The resultant film has a microporous structure made up of open, vertically elongated and uniform cells which imparts a desirable full hand to the leather-like materials made therefrom.

Abstract: The bond strength of composite articles of rubber adhered to ferrous metal substrates through an adhesive is substantially improved at ambient and elevated temperatures by using as the adhesive an interpolymer comprising a conjugated diene and a heterocyclic nitrogen base and by using a rubber containing about 5-60 parts of silica filler per 100 parts by weight of rubber, said silica having a purity on an anhydrous basis of at least 95%.