Anti-graying fabrics of synthetic polyester fibers and process for producing same

Claim 2

A process for producing an anti-graying fabric of synthetic polyester fiber by applying to the fabric an aqueous solution, aqueous dispersion or emulsion comprising in mixture a polysiloxane resin comprising dimethyl polysiloxane having a hydroxyl group attached directly to a terminal silocon atom or methylhydrogen polysiloxane or a mixture of the polysiloxanes, a melamine resin consisting of an alkyletherified methylolmelamine resin, and an antistatic agent consisting of a metal salt or phosphoric acid ester which is easily removable by dry cleaning, thereafter drying the fabric and heat-treating the resulting fabric.

Claim 3

A process as defined in claim 1, wherein the antistatic agent comprises a metal salt of phosphoric acid monoester of at least one compound, or a metal salt of phosphoric acid diester of the compound, or a mixture of the metal salts, said compound being a C 6 -C 40 higher alcohol, and adduct of C 6 -C 30 higher alcohol and ethylene oxide, an adduct of C 6 -C 30 alkylphenol and ethylene oxide, an adduct of C 6 -C 30 higher fatty acid and ethylene oxide, an adduct of C 6 -C 30 higher fatty acid amide and ethylene oxide, or an adduct of C 6 -C 30 higher fatty amine and ethylene oxide.

Claim 4

A process as defined in claim 1 wherein the polysiloxane resin comprises dimethyl polysiloxane having a hydroxyl group attached directly to a terminal silicon atom and an average polymerization degree of 30 to 500, or methylhydrogen polysiloxane having an average polymerization degree of 10 to 80, or a mixture of the polysiloxanes; the melamine resin is an alkyletherified methylolmelamine resin; and the antistatic agent comprises a metal salt of phosphoric acid monoester of at least one compound, or a metal salt of phosphoric acid diester of the compound, or a mixture of the metal salts, said compound being a C 6 -C 40 higher alcohol, an adduct of C 6 -C 30 higher alcohol and ethylene oxide in the mole ratio of 1:1-30, an adduct of C 6 -C 30 alkylphenol and ethylene oxide in the mole ratio of 1:1-30, an adduct of C 6 -C 30 higher fatty acid and ethylene oxide in the mole ratio of 1:1-30, an adduct of C 6 -C 30 higher fatty acid amide and ethylene oxide in the mole ratio of 1:1-30, or an adduct of C 6 -C 30 higher fatty amine and ethylene oxide in the mole ratio of 1:1-30.

Claim 5

A process as defined in claim 1 or 2 or 3, wherein 0.05% to 2% of the polysiloxane resin 0.05% to 5% of the malamine resin and 0.1% to 2% of the antistatic agent are applied to the fabric based on the weight of the fiber.

Claim 6

A process as defined in claim 1 or 2 or 3, wherein the heat treating is conducted at a temperature of 150° C. to 200° C.

Claim 7

An anti-graying fabric of synthetic polyester fiber produced by immersing the fabric in an emulsion comprising a polysiloxane resin, an alkyletherified methylolmelamine resin and an antistatic agent to apply the fabric 0.05% to 2% of a polysiloxane resin, 0.05% to 5% of an alkyletherified methylolmelamine resin and 0.1% to 2% of an antistatic agent based on the weight of the fiber, thereafter drying the fabric and heat-treating the resulting fabric at a temperature of 150° C. to 200° C.; said polysiloxane resin comprising dimethyl polysiloxane having a hydroxyl group attached directly to a terminal silicon atom and an average polymerization degree of 30 to 500, or methylhydrogen polysiloxane having an average polymerization degree of 10 to 80, or a mixture of the polysiloxanes; said antistatic agent comprising a metal salt of phosphoric acid monoester of at least one compound, or a metal salt of phosphoric acid diester of the compound, or a mixture of the metal salts, said compound being a C 6 -C 40 higher alcohol, an adduct of C 6 -C 30 higher alcohol and ethylene oxide in the mole ratio of 1:1-30, an adduct of C 6 -C 30 alkylphenol and ethylene oxide in the mole ratio of 1:1-30, an adduct of C 6 -C 30 higher fatty acid and ethylene oxide in the mole ratio of 1:1-30, an adduct of C 6 -C 30 higher fatty acid amide and ethylene oxide in the mole ratio of 1:1-30, or an adduct of C 6 -C 30 higher fatty amine and ethylene oxide in the mole ratio of 1:1-30.

Claim 8

An anti-graying fabric of synthetic polyester fiber produced by immersing the fabric in an emulsion comprising a polysiloxane resin, an alkyletherified methylolmelamine resin and an antistatic agent to apply the fabric 0.05% to 2% of a polysiloxane resin, 0.05% to 5% of an alkyletherified methylolmelamine resin and 0.1% to 2% of an antistatic agent based on the weight of the fiber, thereafter drying the fabric and heat-treating the resulting fabric at a temperature of 150° C. to 200° C.; said polysiloxane resin comprising dimethyl polysiloxane having a hydroxyl group attached directly to a terminal silicon atom and an average polymerization degree of 30 to 500, or methylhydrogen polysiloxane having an average polymerization degree of 10 to 80, or a mixture of the polysiloxanes; said antistatic agent comprising a metal salt of phosphoric acid monoester of at least one compound, or a metal salt of phosphoric acid diester of the compound, or a mixture of the metal salts, said compound being a C 6 -C 40 higher alcohol, an adduct of C 6 -C 30 higher alcohol and ethylene oxide in the mole ratio of 1:1-30, an adduct of C 6 -C 30 alkylphenol and ethylene oxide in the mole ratio of 1:1-30, an adduct of C 6 -C 30 higher fatty acid and ethylene oxide in the mole ratio of 1:1-30, an adduct of C 6 -C 30 higher fatty acid amide and ethylene oxide in the mole ratio of 1:1-30, or an adduct of C 6 -C 30 higher fatty amine and ethylene oxide in the mole ratio of 1:1-30.