Adhesives and Consolidents - About Restoration
Adhesives and Consolidents - About Restoration
Adhesives and Consolidents - About Restoration
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3. CSS, Acryloid B-72 Glue<br />
CSS Acryloid B-72 glue is manufactured at our facilities using reagent grade acetone <strong>and</strong> Acryloid B-72 resin to form a<br />
50/50 solution. Our B-72 glue is packaged in both 8 fl oz. <strong>and</strong> one quart bottles.<br />
Starch adhesives<br />
1. Natural Starches<br />
Natural starches come in many different forms. Starches make an excellent water soluble adhesive-paste for bookbinding,<br />
hinging prints <strong>and</strong> repairing works of art on paper. The strength <strong>and</strong> physical properties of starch adhesives can be modified<br />
by there blending with PVA, PVOH <strong>and</strong> Methocel A4CP adhesives. If needed, pH levels can be adjusted by the addition (3-<br />
5% by weight) of precipitated calcium carbonate. Any modifications must be done after the starch is cooked.<br />
Cooking of starches to form paste can be done in either a microwave in a deep bowl or on a hot plate in a double boiler.<br />
Either way you choose, you must stir the mixture as often as possible or your end up with lumpy paste. If you use the<br />
microwave, heat in short 20-30 second burst, stir, heat, stir <strong>and</strong> so on for 4-5 minutes. Either way you will have to<br />
experiment with the proportions of starch to water, but a good starting point with any of the starches is 1 part starch to 4-5<br />
parts of distilled water.<br />
2. RICE STARCH (BELGIAN)<br />
Rice Starch forms a clear, medium strength adhesive that is lighter <strong>and</strong> thinner than wheat starch. Rice starch must be<br />
cooked to form an adhesive.<br />
3. WHEAT STARCH<br />
Our Wheat Starch makes a strong adhesive that is clear with a superior smooth texture. This wheat<br />
starch must be cooked to form an adhesive.<br />
4. WHEAT STARCH, pregelatinized (No Cook Type)<br />
Pregelatinized Wheat Starch needs no cooking to produce a very strong <strong>and</strong> smooth paste. It can easily be dissolved in<br />
room temperature water in just a minute or two.<br />
5. JIN SHOFU WHEAT STARCH<br />
Jin Shofu is Japanese precipitated wheat starch which after cooking produces what is considered by many conservators to<br />
be the smoothest <strong>and</strong> best wheat paste available.<br />
6. YES PASTE<br />
Yes Paste is a starch paste that is made from corn dextrine, corn syrup, water <strong>and</strong> preservative. It has a pH of approx. 6.5.<br />
It can be used for bookbinding, but is not recommended for use with photographic materials. It has been under scrutiny for<br />
some years for yellowing. Many archivist recommend Golden Heavy Gel Medium or Lineco Neutral PH Adhesive. Scotch<br />
Permanent Glue Stick is also acid-free. Polyvinyl Alcohol Adhesive does not yellow <strong>and</strong> remains flexible with age.
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