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...
Patent
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.
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patent: 3605848 (1971-09-01), Lombardi et al.
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patent: 3891579 (1975-06-01), Cenker et al.
patent: 3892685 (1975-07-01), Pusey
patent: 3943075 (1976-03-01), Fishbein et al.
Anzai Shiro
Ino Fumitaka
Ishii Michio
Kaneda Hiroshi
Kuwano Masao
Bridgestone Tire Co. Ltd.
Welsh M. J.
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