Heat-insulating material

Details Heat-insulating material Heat-insulating material

1977-12-20

1979-10-23

Willis, Jr., P. E.

Compositions

Electrolytes for electrical devices

252 81, 428921, C04B 4312

Patent

active

041720423

ABSTRACT:
A heat-insulating material comprising from 85 to 98 parts by weight of mineral wool and from 15 to 2 parts by weight of a binder applied onto the wool, which is a modified resol phenol-formaldehyde resin on the basis of phenol, formaldehyde, sodium hydroxide, a water proofing additive which is an individual alkylresorcinol with a number of side chain carbons of 2 to 8 or a mixture of alkylresorcinols, as well as urea, or dicyandiamide, or melamine, the ratio between said components being as follows (parts by weight):

REFERENCES:
patent: 2633433 (1953-03-01), Hollenberg
patent: 3408316 (1968-10-01), Mueller et al.
patent: 3770466 (1973-11-01), Wilton
patent: 3963652 (1976-06-01), Tanimura et al.

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