Paraloid B-44

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[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)

Other Properties

Soluble in toluene, xylene, Cellosolve® acetate, acetone, methyl ethyl ketone.

Molecular Weight Tg = 60 C
Refractive Index 1.479

Additional Information

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

Sources Checked for Data in Record

  • Marie Svoboda, Conservation Survey Index, unpublished, 1997
  • Cricket Harbeck, Adhesives Commonly used in Objects Conservation, unpublished, 1996
  • Jane Down, Maureen MacDonald, Jean Te'treault, Scott 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
  • Product Information Comment: Rohm and Haas acryloid acrylic resins sheet.1986.
  • Website address 1 Comment: