Paraloid B-48N

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[Rohm & Haas] A registered trademark for a clear, colorless, Thermoplastic Acrylic resin. Paraloid® B-48N (formerly called Acryloid® B-48N in the United States) is a copolymer of Methyl methacrylate and butyl acrylate. It contains an Adhesion promoter that assists bonding to bare and primed metals. Analysis indicates that it also contains a Plasticizer, Dibutyl phthalate, that is sometimes concentrated in a residue on the bottom of the container. Paraloid® B-48N is used as a clear coating for metals (Copper, Brass, Bronze, and Zinc). It produces a tough, flexible coating with excellent durability. Paraloid® B-48N is supplied as solid pellets or as 45% solids solution in Toluene (Paraloid® B-48S).

Synonyms and Related Terms

Acryloid B-48N; Paraloid B48N (sp); Paraloid B-48S; Acryloid B48N (sp); Acryloid B-48N (sp)

Other Properties

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

Adding 2% ethanol may reduce cloudiness and stringiness.

Density 1.15
Molecular Weight Tg= 50 C
Refractive Index 1.89

Hazards and Safety

Talas: MSDS

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.

Sources Checked for Data in Record

  • External source or communication, Comment: Submission by B. Rydzewski, Jan. 2009
  • 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.
  • Comment:
  • Marie Svoboda, Conservation Survey Index, unpublished, 1997
  • Cricket Harbeck, Adhesives Commonly used in Objects Conservation, unpublished, 1996
  • Conservation Materials Ltd., Catalog
  • Conservation Support Systems, Catalog, 1997