HRH adhesion systems for rubber

Ammonia is reacted with formaldehyde to produce hexamethylene tetramine, which is used as a methylene donor in the HRH adhesion system for rubber. It is also used to cure novolac phenolic resins in rubber compounds to increase hardness. 

Ammonia reacts with carbon dioxide to form urea, which is a feedstock for the production of melamine, from which the HMMM adhesion promoter for the HRH adhesion system for rubber to steel tire cord is derived. 

Benzene is used as a feedstock to produce resorcinol, a very important chemical that is used to manufacture resorcinol formaldehyde (RE) resin for RFL dips for tire cord adhesion, as well as RF resin for HRH adhesion systems for rubber-to-metal adhesion, and for the production of TIER for curing polyurethane rubber. 

Another 3% of formaldehyde production is used in making melamine-formaldehyde resins for the plastics industry. However, a small amount of formaldehyde goes into the production of HMMM, used as a methylene donor in HRH adhesion systems for rubber. 

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See also in sourсe #XX -- [ , ]

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