Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-03-31
1976-12-28
Cockeram, H.S.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 18TN, 260 28R, 264176R, 428425, C08G 1842, C08G 1800
Patent
active
040001172
ABSTRACT:
Two solvent soluble thermoplastic polyurethane elastomers and blends thereof are characterized by a hardness from about 67 Shore A to about 58 Shore D. The softer of the two elastomers is derived from the reaction of 4,4'-methylenebis(phenylisocyanate) and a poly(1,4-butylene adipate) which has a molecular weight of 600-750. The harder of the two elastomers is derived from the reaction of the same isocyanate and a combination of a major portion of poly(neopentylene adipate) of M.W. circa 450-550 and a minor portion of a poly(1,4-butylene adipate) of M.W. circa 300-360. The elastomers find particular utility as solution grade materials for various types of coatings and the like.
REFERENCES:
patent: 2801648 (1957-08-01), Anderson et al.
patent: 2953539 (1960-09-01), Keplinger et al.
patent: 3094510 (1963-06-01), Parker et al.
Wright & Cumming--Solid Polyurethane Elastomers, Maclaren, London, pp. 305-307.
Saunders et al., Polyurethanes Part II. Interscience, (N.Y.) 1964, pp. 377-383.
Schollenbergen et al., Rubber World, Jan. 1958, pp. 549-555.
Waugaman, Modern Plastics, Oct. 1961, pp. 146-152, 229 and 331.
Cockeram H.S.
Firth Denis A.
Rose James S.
The Upjohn Company
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