Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1987-12-23
1989-12-26
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521 91, 521 92, 521122, 521181, 521907, C08J 914
Patent
active
048898759
ABSTRACT:
The present invention relates to hard foams having foamed and hardened phenolic resins as binding agents, and in which over 90% of the filler is aluminum hudroxide. The filler content is more than 100% with respect to the resin content of the foams. The foamble, filler-containing composition used for the production of the foams is very fluid and can be used directly for the production of moldings of any desired geometry. The aluminum hydroxide used has a grain size distribution such that between 30 to 60% of the filler is in the grain size range under 5 microns. The moldings containing the hard foam can also be in the form of composites. They are characterized not only by their good insulating properties but also by improved compressive strength, extremely little shirinkage tendency and extraordinarily high fire resistance. They are used mainly in the construction industry.
REFERENCES:
patent: 2933461 (1960-04-01), Mullen
patent: 4419460 (1983-12-01), Ho
patent: 4461852 (1984-07-01), Nakamura et al.
Aust Aloys
Tiroux Josef
Weissenfels Franz
Dynamit Nobel AG
Foelak Morton
Isobloc GmbH
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