Paraloid B-66

Description

[Rohm & Haas] A registered trademark for a clear, colorless, thermoplastic acrylic resin. Paraloid® B-66 (formerly called Acryloid® B-66 in the United States) is composed of a methyl methacrylate and butyl methacrylate copolymer. Paraloid® B-66 is used for paints and clear coatings over wood, plastic and fabric. It produces a hard, durable surface, but yellows and becomes insoluble with time. Paraloid® B-66 is supplied as solid pellets or as 51% solids solution in toluene (Paraloid® B-66T) and in xylene (Paraloid® B-66X).

Synonyms and Related Terms

Acryloid® B-66; Paraloid® B-66X; Paraloid® B-66T; Paraloid B66 (sp); Paraloid B-66 (sp); Acryloid B66 (sp); Acryloid B-66 (sp)

Risks

• Dow: SDS sheet

Physical and Chemical Properties

• Soluble in Toluene, Xylene, Acetone, Methyl ethyl ketone.
• Molecular weight = 70,000
• Tg = 50 C
• Refractive Index = 1.486

Resources and Citations

• Dow: Technical sheet

• Marie Svoboda, Conservation Survey Index, unpublished, 1997

• Cricket Harbeck, Adhesives Commonly used in Objects Conservation, unpublished, 1996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

• Rohm and Haas acryloid acrylic resins sheet.1986.