Sizing compositions and glass fiber reinforced thermoplastic composites
AssigneePPG Industries Ohio, Inc.
InventorsJacob Cornelis Dijt, Jacob Hendricus Van Der Woude, Ronald Boelman
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Abstract
The present invention relates to sizing compositions, glass fibers at least partially coated with sizing compositions, and glass fiber reinforced composite materials. In one embodiment, a sizing composition comprises at least one maleic anhydride copolymer, at least one coupling agent, and a reaction product of an alkoxylated amine and a polycarboxylic acid, which is further reacted with an epoxy compound.
Claims39
A polyamide-compatible sizing composition comprising:
- at least one maleic anhydride copolymer, which is present in an amount greater than 10% by weight on a total solids basis;
- at least one coupling agent;
- and
- a third component that is a reaction product of an alkoxylated amine and a polycarboxylic acid, which is further reacted with an epoxy compound;
- wherein the third component is present in an amount greater than about 50 weight percent of the sizing composition on a total solids basis.
A method of making a glass fiber reinforced composite comprising:
- providing a plurality of continuous glass fibers;
- at least partially coating the plurality of continuous fibers with a sizing composition comprising:
- (a) at least one maleic anhydride copolymer, which is present in an amount greater than 10% by weight on a total solids basis, (b) at least one coupling agent, and (c) a third component that is a reaction product of an alkoxylated amine and a polycarboxylic acid, which is further reacted with an epoxy compound, which is present in an amount greater than about 50 weight percent on a total solids basis;
- and
- disposing the plurality of coated continuous glass fibers in a polyimide resin.
A polyamide-compatible sizing composition comprising:
- at least one maleic anhydride copolymer, which is present in amount greater than 10% by weight on a total solids basis;
- at least one coupling agent;
- and
- a third component that is a reaction product of an alkoxylated amide and a polycarboxylic acid, which is further reacted with an epoxy compound;
- wherein the third component is present in an amount greater than about 50 weight percent of the sizing composition on a total solids basis.
A polyamide-compatible sizing composition comprising:
- at least one acrylic polymer, which is present in an amount greater than 10% by weight on a total solids basis;
- at least one coupling agent;
- and
- a third component that is a reaction product of an alkoxylated amine and a polycarboxylic acid, which is further reacted with an epoxy compound;
- wherein the third component is present in an amount greater than about 50 weight percent of the sizing composition on a total solids basis.
Dependencies are inferred from the claim text.