Polyurethane coating compositions and process of preparation

Details Polyurethane coating compositions and process of preparation Polyurethane coating compositions and process of preparation

1976-03-11

1978-04-11

Cockeram, H.S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 314R, 260 328N, 260 332R, 260 334UR, 260 336UB, 260 75NC, 260 75NB, 260 775MA, 260 75NE, 260 775AA, C08K 511, C08G 1812, C08G 1865

Patent

active

040838153

ABSTRACT:
Polyurethane elastomers are described which are not themselves soluble in organic polar solvents at ambient temperatures but which, upon heating to 140.degree. - 180.degree. C in the presence of said solvents, form solutions which are stable at ambient temperatures. The elastomers are obtained by reacting 4,4'-methylenebis(phenyl isocyanate) with a polyester of polyether diol (M. W. = 750 to 2000) and diol extender in the presence of a monohydric alcohol (M. W. = 32 to 500). The elastomers generally have softening points in the range of 140.degree. C to 180.degree. C.
Coating compositions derived from the above elastomers are also described.

REFERENCES:
patent: 2884340 (1959-04-01), Loshaek
patent: 3012984 (1961-12-01), Hudson
patent: 3015650 (1962-01-01), Schollenberger
patent: 3178300 (1965-04-01), Gemeinhoudt et al.
patent: 3294713 (1966-12-01), Hudson et al.
patent: 3384624 (1968-05-01), Haiss
patent: 3405077 (1968-10-01), Pastor et al.
patent: 3632845 (1972-01-01), Brownsword
patent: 3635907 (1972-01-01), Schulze et al.
patent: 3641199 (1972-02-01), Niederhauser et al.
patent: 3686140 (1972-08-01), Gruber et al.
patent: 3875086 (1975-04-01), Ramey et al.
patent: 3915923 (1975-10-01), Ward
DOS 2418075, Oct. 30, 1975, Bayer A/G, 25 pages, 1 sheet drawing.

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