C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/5703
C08L 67/02 (2006.01) C08K 7/14 (2006.01)
Patent
CA 1124427
ABSTRACT This invention relates to a thermoplastic polymeric compo- sition which comprises a glass fiber-filled polybutylene tere- phthalate and which contains as an improvement a warp-inhibiting amount of a polymeric additive consisting of a linear aromatic substantially halogen-free polyester consisting of a bisphenol monomer residue and a dicarboxylic acid monomer residue and having a relatively low intrinsic viscosity. The compositions exhibit substantially diminished warpage on molding without a deleterious effect on the other properties of the glass fiber- filled polybutylene terephthalate. Preferred compositions of the invention also exhibit enhanced tensile strength compared to comparable pure glass fiber-filled polybutylene terephthalate.
339733
Hooker Chemicals & Plastics Corp.
Sherman
LandOfFree
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