The origin of "flexible" animal glues is unknown, but they were certainly in use since early in the 20th century. Their use in bookbinding, however, has declined sharply in recent years in favor ofINTERNALLY PLASTICIZED synthetic adhesives, such as the RESINOUS ADHESIVES . (198 , 236 )
URL: http://cool.conservation-us.org/don/dt/dt1363.html
Timestamp: Saturday, 19-Nov-2011 13:18:41 PST
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