Coating solutions suitable for improving the adhesion of nylon coatings and processes for the application thereof
AssigneeE. I. Du Pont de Nemours and Company
InventorRolando Umali Pagilagan
Life of this patent
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Abstract
Novel coating solutions are disclosed that promote desirable adhesion to substrates formed from nylon, polyester, or a combination thereof. These coating solutions include nylons having specific solubility together with select formaldehyde resins and resin mixtures. The solutions provide superior adhesion and are therefore attractive to thread applications as well as formed structures.
Claims16
Coating solutions which suitably adhere to substrates of polyamides, polyesters and mixtures thereof, comprising
- a) at least one organic solvent
- b) polyamide with a solubility of at least 0.5 weight percent in the organic solvent, and
- c) 1 to 100 weight percent based on the weight of the polyamide of one or more formaldehyde resins selected from the group consisting of high imino glycoluril-formaldehyde, partially alkylated glycoluril-formaldehyde, non-alkylated glycoluril-formaldehyde, high imino benzoguanamine-formaldehyde, partially alkylated benzoguanamine-formaldehyde, and non-alkylated benzoguanamine-formaldehyde.
A coated article comprising (I) a substrate of polyamides, polyesters, or mixtures thereof, (II) a coating solution applied thereto to form a precoated substrate said coating solution comprising at least 0.5 weight percent of one or more formaldehyde resins selected from the group consisting of high imino glycoluril-formaldehyde, partially alkylated glycoluril-formaldehyde, non-alkylated glycoluril-formaldehyde, high imino benzoguanamine-formaldehyde, partially alkylated benzoguanamine-formaldehyde, and non-alkylated benzoguanamine-formaldehyde, and (III) a polyamide with a solubility of at least 0.5 weight percent in an organic solvents applied to said precoated substrate.
Coating solutions which suitably adhere to substrates of polyamides, polyesters and mixtures thereof, comprising
- a) at least one organic solvent
- b) polyamide with a solubility of at least 0.5 weight percent in the organic solvent, and
- c) 1 to 100 weight percent based on the weight of the polyamide of one or more formaldehyde resins selected from the group consisting of high imino melamine-formaldehyde, partially alkylated melamine-formaldehyde and non-alkylated melamine-formaldehyde,
- wherein a catalyst is not present.
A coated article comprising (I) a substrate of polyamides, polyesters, or mixtures thereof, (II) a coating solution wherein a catalyst is not present applied thereto to form a precoated substrate, said coating solution comprising at least 0.5 weight percent of one or more formaldehyde resins selected from the group consisting of high imino melamine-formaldehyde, partially alkylated melamine-formaldehyde, and non-alkylated melamine-formaldehyde, and (III) a polyamide with a solubility of at least 0.5 weight percent in an organic solvent, applied to said precoated substrate.
Dependencies are inferred from the claim text.