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
1992-06-09
1994-05-10
Kight, III, John
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 45, 528 59, 528 61, 528 67, 528 76, 4284231, 160 25, C08G 1800
Patent
active
053108477
ABSTRACT:
The present patent application relates to a polyurethane composition for organic glasses characterized in that it comprises: a first constituent formed by a polyisocyanate at least di-functional, and a second constituent formed by an acyclic saturated monomer bearing at least three reactive functions with respect to isocyanates to form carbamate links, among which reactive functions at least 40% in number are --SH mercapto groups, the proportion of the reactive functions being at least 45% by weight with respect to the molecular weight of the monomer.
REFERENCES:
patent: 3984456 (1976-10-01), Guthrie et al.
patent: 4689387 (1987-08-01), Kajimoto et al.
patent: 4775733 (1988-10-01), Kanemura et al.
patent: 4788083 (1988-11-01), Dammann et al.
patent: 4946923 (1990-08-01), Nagata et al.
Bochu Christophe
Yean Leanirith
Essilor International "Compagnie Generale d'Optique"
Kight III John
Truong Duc
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