Jade 454

Description

[Jade Adhesives, Chicago] A brand name for a white aqueous adhesive emulsion containing Ethylene vinyl acetate (20/80) copolymer. Jade 454 may also contain small amounts of plasticizers, dispersion aids, defoamers and preservatives. It turns yellow-brown with age.

Collection Risks

Jade 454 is a moderate Acetic acid emitter. It has been shown to fall in the acidic range for pH before and after aging. In aging tests, Jade 454 has been shown to emit Toluene, water, Dichloromethane, 2-ethoxy ethanol, and 2-ethoxy ethyl acetate. (Down et al 1996). Enclosures prepared with off-gassing materials, especially when large quantities of the materials are used, should be allowed to dry for three to four weeks before being used to enclose sensitive objects (Tétreault 2017).

Physical and Chemical Properties

• Emulsion has 38% solids. Viscosity = 40000-45000 cps.
• Emulsion pH = 3.84 (from AIC Book and Paper catalog).
• Dried film swells in water and toluene.

Working Properties

• Storage/Shelf Life: One year at 4.44-49°C (40-120°F).

Resources and Citations

• Emma Guerard, contributed information, MWG group, 2020.
• Jane Down, Adhesive projects at the Canadian Conservation Institute, Preprints of the SSCR's 2nd Resins Conference, Sept. 1995, Scottish Society for Conservation & Restoration, Edinburgh

• Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989

• Conservation Support Systems, Catalog, 1997

• Down, Jane L., Maureen A. MacDonald, Jean Tétreault and R. Scott Williams. “Adhesive Testing at the Canadian Conservation Institute: An Evaluation of Selected Poly(Vinyl Acetate) and Acrylic Adhesives,” ‘’Studies in Conservation’’ 41, No. 1 (1996), 19-44.

• Down, Jane L. “The evaluation of selected poly(vinyl acetate) and acrylic adhesives: A final research update.” ‘’Studies in Conservation’’ 60, No. 1 (2015), 33-54.

• Jean Tétreault. “Products Used in Preventive Conservation,” ‘’CCI Technical Bulletin’’. Canadian Conservation Institute, Ottawa, No. 32 (2017).

• “Jade 454” in BPG Adhesives, AIC WIKI (accessed 6/2020).