Paraloid B-44

Description

[Rohm & Haas] A registered trademark for a clear, colorless, thermoplastic acrylic resin. Paraloid B-44 (formerly called Acryloid B-44 in the United States) is composed of a methyl methacrylate and ethyl acrylate copolymer. Paraloid B-44 is used for paints and clear coating for metals. It is the primary ingredient in Incralac metal coating. It produces a tough, flexible coating that yellows and becomes difficult to remove after long outdoor exposure. Paraloid® B-44 is supplied as solid pellets or as a 40% solids solution in toluene (Paraloid B-44S).

Synonyms and Related Terms

Acryloid® B-44; Paraloid® B-44S; Paraloid B44 (sp) Paraloid B-44 (sp); Acryloid B44 (sp); Acryloid B-44 (sp)

Physical and Chemical Properties

• Soluble in Toluene, Xylene, Cellosolve® acetate, Acetone, Methyl ethyl ketone.
• Molecular Weight = 140,000
• Tg = 60 C
• Refractive Index = 1.479

Resources and Citations

• J. Down, M.MacDonald, J.Te'treault, S.Williams, Adhesive Testing at the Canadian Conservation Institute-An Evaluation of Selected Poly(Vinyl acetate) and Acrylic Adhesives", Studies in Conservation 41:19-44, 1996.

• C. V. Horie, Materials for Conservation, second edition, Routledge: London, 2010

• Marie Svoboda, Conservation Survey Index, unpublished, 1997

• Cricket Harbeck, Adhesives Commonly used in Objects Conservation, unpublished, 1996

• Product Information Comment: Rohm and Haas acryloid acrylic resins sheet.1986.

• Website address 1 Comment: www.rohmhaas.com