C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/4205, 400/54
C08L 61/06 (2006.01) B32B 15/08 (2006.01) B32B 15/12 (2006.01) C08K 5/00 (2006.01) D21H 17/48 (2006.01) D21H 17/57 (2006.01) H05K 1/03 (2006.01) C08L 75/08 (2006.01)
Patent
CA 1185388
ABSTRACT OF THE DISCLOSURE: The present invention relates to a copper- laminated hard paper made of a phenolic resin laminate which is distinguished by reduced punching resistance and stripping resistance. In accordance with the invention increased elasticity of a laminate is obtained by adding 5-20% by weight of a blocked polyetherurethane component from a reaction product of polyethylene glycol, poly- propylene glycol and p-nonylphenol with toluene-2,4-diiso- cyanate having the following composition: polyethylene glycol 15-20% by weight polypropylene glycol 50-60% by weight toluene-2,4-diisocyanate 8-12% by weight nonylphenol 10-15% by weight in the manufacture of a fire resistant laminate based on a cellulose-containing substrate material and an impregnating varnish made up of a phenol-resol with additives of plasti- cizers and flame retardants.
414550
Franz Arnold
Kopnick Siegfried
Dynamit Nobel Aktiengesellschaft
Robic Robic & Associes/associates
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