Hydroxy terminated polybutadiene based polyurethane bound propel

Details Hydroxy terminated polybutadiene based polyurethane bound propel Hydroxy terminated polybutadiene based polyurethane bound propel

1978-11-17

1980-11-18

Breitenstein, G. T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560 25, 560115, 560158, 560163, C07C12504, C08G 1832

Patent

active

042347386

ABSTRACT:
Salicylate esters have been found to be suitable blocking agents for polyisocyanates, enabling preparation of hydroxy terminated polybutadiene based polyurethane bound propellant grains having extended pot life. Unblocking occurs readily at normal propellant cure temperatures, allowing normal cure rates.

REFERENCES:
patent: 2855436 (1958-10-01), Rekker
patent: 3488380 (1970-01-01), Goldhamer et al.
Hsiao et al., J. of Medicinal Chemistry, vol. 16, No. 4, pp. 391-394, (1973).

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