Polyester alloys and molding compositions containing the same
AssigneeGeneral Electric Company
InventorsDaniel W. Fox, Allen D. Wambach
Life of this patent
Estimating the term…
Abstract
Thermoplastic, stable, blended compositions comprising a combination of (a) a poly(ethylene terephthalate) resin and (b) a poly(1,4-butylene terephthalate) resin. The alloyed combination of resins can be reinforced with fillers and also rendered flame retardant.
Claims40
A thermoplastic, stable blended composition that is rigid at a temperature of 75.degree.-90.degree.F comprising
- a. from about 1 to about 99 parts by weight of a poly-(ethylene terephthalate) resin and
- b. from about 99 to about 1 part by weight of a poly(1,4-butylene terephthalate) resin or a copolyester thereof with a minor amount of an aliphatic or aromatic dicarboxylic acid or an aliphatic polyol.
A reinforced thermoplastic composition that is rigid at a temperature of 75.degree.-90.degree.F comprising
- A. a stable, blended resinous combination comprising
- a. from about 1 to about 99 parts by weight of a poly-(ethylene terephthalate) resin and
- b. from about 99 to about 1 part by weight of a poly-(1,4-butylene terephthalate) resin or a copolyester thereof with a minor amount of an aliphatic or aromatic dicarboxylic acid or an aliphatic polyol and
- B. a reinforcing amount of a reinforcing filler for said combination.
A flame retardant thermoplastic composition that is rigid at a temperature of 75.degree.-90.degree.F comprising
- A. a stable, blended resinous combination comprising
- a. from about 1 to about 99 parts by weight of a poly-(ethylene terephthalate) resin and
- b. from about 99 to about 1 part by weight of a poly-(1,4-butylene terephthalate) resin or a copolyester thereof with a minor amount of an aliphatic or aromatic dicarboxylic acid or an aliphatic polyol and
- B. a flame retardant additive in a minor proportion but in an amount at least sufficient to render resinous combination A non-burning or self-extinguishing.
A reinforced flame retardant thermoplastic composition that is rigid at 75.degree.-90.degree.F comprising
- A. a stable, blended resinous combination comprising
- a. from about 1 to about 99 parts by weight of a poly-(ethylene terephthalate) resin and
- b. from about 99 to about 1 part by weight of a poly(1,4-butylene terephthalate) resin or a copolyester thereof with a minor amount of an aliphatic or aromatic dicarboxylic acid or an aliphatic polyol,
- B. a reinforcing amount of a reinforcing filler for said combination A and
- C. a flame retardant additive in a minor proportion but in an amount at least sufficient to render resinous combination A non-burning or self-extinguishing.
An intercrystalline thermoplastic composition that is rigid at 75.degree.-90.degree.F comprising
- A. a stable, blended resinous combination comprising
- a. from about 1 to about 99 parts by weight of a poly(ethylene terephthalate) resin and
- b. from about 99 to about 1 part by weight of a poly-(1,4-butylene terephthalate) resin or a copolyester thereof with a minor amount of an aliphatic or aromatic dicarboxylic acid or an aliphatic polyol and
- B. c. at least one high molecular weight normally crystalline, normally amorphous or normally partially crystalline and partially amorphous polymer in the concentration range of from about 1 to about 99 parts by weight of A to from about 99 to about 1 part by weight of B.
A thermoplastic, stable blended composition that is rigid at 75.degree.-90.degree.F, said composition consisting essentially of
- a. from about 1 to about 99 parts by weight of a poly(ethylene terephthalate) resin and
- b. from about 99 to 1 part by weight of a poly(1,4-butylene terephthalate) resin or a copolyester thereof with a minor amount of an aliphatic or aromatic dicarboxylic acid or an aliphatic polyol.
Dependencies are inferred from the claim text.