Sizing Composition for Charges Used in Thermoplastic Polymeric Material Reinforcement, Reinforced Polymeric Materials and Method of Manufacture

An aqueous sizing composition for reinforcing charges, the aqueous sizing composition comprising:

• a silane coupling agent;
• a binder composition comprising an epoxy film forming polymer, wherein the epoxy film forming polymer is compatible with thermoplastic polyester matrix resin and comprises from 2 to 8 reactive epoxy groups per chain;
• and
• a hypophosphite at a concentration ranging from 5 to 30 weight percent of total solids of the aqueous sizing composition.

An aqueous sizing composition for reinforcing charges, the aqueous sizing composition comprising:

• a silane coupling agent at a concentration ranging from 1 to 20 weight percent solids;
• a binder composition comprising an epoxy film forming polymer, wherein the epoxy film forming polymer is compatible with thermoplastic polyester matrix resin and comprises from 2 to 8 reactive epoxy groups per chain, and wherein the binder composition is present at a concentration ranging from 25 to 80 weight percent solids;
• and
• a hypophosphite in an amount sufficient to provide a concentration of hypophosphite ranging from 5 to 30 weight percent solids;
• wherein the weight percents are per total solids of the aqueous sizing composition.