Antiques, their restoration and preservation / by A. Lucas.

  • Lucas, A. (Alfred), 1867-1945.
Date:
[1932]
Catalogue details

Licence: In copyright

Credit: Antiques, their restoration and preservation / by A. Lucas. Source: Wellcome Collection.

    35/248 (page 31)
    a wide-mouthed bottle while hot, as when cold it sets to a jelly. For use, warm the bottle in hot water and apply the cement hot. To avoid mould, add a few drops of a strong solution of carbolic acid. This cement is not wholly satisfactory, as it is troublesome to make and will not stand soaking in water. In this connexion it may be mentioned that Pliny (first century a.d.) states 1 that a mix¬ ture of white of egg and quicklime unites broken glass, which it does effectually. Casein Adhesive.—Casein is the protein from milk, and for the preparation of an adhesive this is precipitated by acids, washed, dried, ground and mixed with small proportions of other materials, such as sodium carbonate, sodium fluoride or slaked lime. Casein adhesive is frequently called “ cold water glue,” and is sold in the form of a fine powder, which only requires mixing with water to be ready for use. It is about equal to the best glue in adhesive properties. Celluloid cement consists of celluloid 2 dissolved in an appropriate solvent. A satisfactory cement may be prepared by dissolving celluloid in acetone. The celluloid is cut into small fragments and put 1 Natural History, xxix, ii. 2 See p. 53.