Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1974-05-22
1976-05-18
Myers, Jane S.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260 25AN, 260 316, 260 75NH, 260 75NK, 260 75NP, 260484A, 260 75NQ, C07C 6966
Patent
active
039577538
ABSTRACT:
Solid and microcellular polyurethane elastomers prepared by reacting (a) liquid polyesters containing from about 25 percent by weight to about 70 percent by weight of the epsilon-oxycaproyl unit, the balance of the polyester being derived from the reaction of at least one dicarboxylic acid with at least two glycols selected from the group consisting of ethylene glycol 1,3-propanediol, 1,4-butanediol and 1,5-pentanediol, (b) an organic polyisocyanate, and optionally (c) a chain-extender comprising water, glycols, amino alcohols, or diamines. If the liquid polyester (a) is branched, for example, by addition of small quantities of a triol, the reaction with the organic polyisocyanate may be conducted in the absence of a chain-extender. Processes for producing these elastomers are also disclosed.
Novel liquid, substantially primary hydroxyl-terminated, linear and branched polyesters containing from about 25 percent by weight to as much as about 70 percent by weight of the epsilonoxycaproyl unit ##EQU1## the balance of the polyester being derived from the reaction of at least one dicarboxylic acid with at least two straight chain glycols selected from the group consisting of ethylene glycol, 1,3-propanediol, 1,4-butanediol and 1,5-pentanediol. These polyesters have a true melting point no higher than about 30.degree.C. Also provided are processes for producing these polyesters.
REFERENCES:
patent: 2990379 (1961-06-01), Young et al.
patent: 3169945 (1965-02-01), Hostettler et al.
patent: 3186971 (1965-06-01), Hostettler et al.
Cook William H.
Hostettler Fritz
Lombardi Frank G.
Inter-Polymer Corporation
Myers Jane S.
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