Soft polyurethane elastomer containing isocyanurate ring

Details Soft polyurethane elastomer containing isocyanurate ring Soft polyurethane elastomer containing isocyanurate ring

1977-01-31

1978-11-07

Welsh, M. J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 54, 528 58, 528 76, 528404, C08G 1818

Patent

active

041245733

ABSTRACT:
A soft polyurethane elastomer containing isocyanurate ring prepared by reacting polyoxypropylene polyol having an OH equivalent molecular weight of about 500-3,000, and a functionality of about 2-5, and polyisocyanate compound in the presence of tertiary amine catalyst, and if desired further combined with organic tin catalyst. This process is advantageous in facilitation of material control during curing reaction, low exothermicity and high thermal stability of the resulting polymer. Further the properties of the polymer are improved by using ethyleneoxide addition polyoxypropylene polyol instead of the above polymer and a specific tertiary amine as a catalyst. The elastomer thus prepared is significantly suitable for tire filling material.

REFERENCES:
patent: 3154522 (1964-10-01), Beitchman
patent: 3396167 (1968-08-01), Davies
patent: 3605848 (1971-09-01), Lombardi et al.
patent: 3866652 (1975-02-01), Ahmad
patent: 3891579 (1975-06-01), Cenker et al.
patent: 3892685 (1975-07-01), Pusey
patent: 3943075 (1976-03-01), Fishbein et al.

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