Performance and processing of polyvinyl butyral (PVB)/acrylic composites
AssigneeRohm and Haas Company
InventorsManoj Nerkar, Hailan Guo
Life of this patent
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Abstract
A composition and a method for preparing a polymer composite article. The composition comprises (A) a polyvinyl butyral (PVB) polymer in an amount of from 10 to 90 wt. %. The composition also comprises (B) a filler in an amount of from 10 to 90 wt. %. Further, the composition comprises (C) an acrylic polymer additive in an amount of from greater than 0 to 10 wt. %, the acrylic polymer additive selected from acrylic copolymers having a weight average molecular weight of at least 4,000,000 Da and a core-shell acrylic additive having a crosslinked core and a shell comprising an acrylic homopolymer or copolymer. The ranges for components (A)-(C) are based on the total weight of components (A), (B) and (C) in the composition.
Claims9
A composition for preparing a polymer composite article, said composition comprising:
- (A) a polyvinyl butyral (PVB) polymer in an amount of from 10 to 90 wt. %;
- (B) a filler in an amount of from 10 to 90 wt. %;
- (C) an acrylic polymer additive in an amount of from greater than 0 to 20 wt. %, wherein the acrylic polymer additive is selected from an acrylic copolymer having a weight average molecular weight of at least 5,000,000 Da or a core-shell acrylic additive having a crosslinked core and a shell comprising an acrylic homopolymer or copolymer;
- wherein said (C) acrylic polymer additive comprises an acrylic copolymer that is the reaction product of methyl methacrylate monomers and butyl acrylate monomers;
- and
- wherein the acrylic copolymer comprises at least 60 wt. % of units derived from methyl methacrylate monomers based on the total weight of the acrylic copolymer;
- each based on the total weight of components (A), (B) and (C) in said composition.
Dependencies are inferred from the claim text.