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
1981-07-27
1983-05-10
Cockeram, H. S.
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...
2642711, 264279, 528 65, C08G 1848, C08G 1875, C08G 1876
Patent
active
043830994
ABSTRACT:
An encapsulant material suitable for use in space applications a polyurethane having according to the ESTEC specification a total mass loss of not greater than 1% and condensible volatiles content of not greater than 0.1% combined with a vibration performance characterised by a Q of from 4 to 15 and a peak frequency of 200 to 400 Hz when vibrated at 1g.
REFERENCES:
patent: 3033825 (1962-05-01), Murphy
patent: 3897401 (1975-07-01), Ringler et al.
patent: 4190711 (1980-02-01), Zdrahala et al.
patent: 4202956 (1980-05-01), Taylor
patent: 4243760 (1981-01-01), McDaniel et al.
European Space Agency-Specification ESA PSS-09/ QRM-02T (ESTEC) Issue No. 2, Jan. 8, 1976.
Hajimichael Agathangelos
Hopper Sidney
Smith Peter K.
Cockeram H. S.
E M I Limited
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