Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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resinous adhesives

A group of adhesives containing as their principal constituent a water emulsion of POLYVINYL ACETATE (PVA) resin. There are several formulas for PVA resinous adhesives, some of the principal ones used in conservation work being listed below:
1.  PVA                 95%
    Plasticizer          5%
    Water (sufficient to thin as required for best working consistency)

This composition is used both in hand binding operations and in gluing machines, and is particularly suitable in those operations involving the use of pyroxylin coated or impregnated fabrics, e.g., buckram, which are difficult to attach by means of ordinary glues.

2.  PVA                 78.0%
    Dibutyl phthalate    6.3%
    Gamma valerolactone  7.8%
    Water                7.9%

This formula produces an adhesive which will adhere paper, leather, plain cloths, or pyroxylin coated or impregnated, starch filled, or rubberized cloths to cellulose acetate surfaces.

3.  PVA                 90%
    Gamma valerolactone 10%
    Water (sufficient to thin as required for best working consistency)

This is a quick drying adhesive.

4.  PVA                 32%
    Isopropyl alcohol   39%
    Plasticizer          4%
    Water               25%

This adhesive provides excellent penetration

5.  PVA                 89%
    Hexylene glycol      7%
    Isopropyl alcohol    2%
    Water                2%

This is an adhesive that is quick drying 217 and has excellent penetration. (37 , 309 )




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