Process for Tinting, Dyeing or doping or moulded Components Made of Transparent (Co)Polyamides in Aqueous Dye Bath

a technology of transparent polyamides and dye baths, which is applied in the direction of dyeing process, organic dyes, textiles and papermaking, etc., can solve the problem that none of the baths meets the condition of stability, and achieves the effect of fast dyeing, strong adhesion of dyestuffs to polymers, and excellent quality
US20070294841A1Inactive Publication Date: 2007-12-27EMS CHEM AG
9 Cites 10 Cited by

Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
EMS CHEM AG
Publication Date
2007-12-27
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The present invention relates to a novel composition of dye baths or processing baths and a process for tinting, dyeing or doping of moulded components with functional additives in these aqueous dipping baths or processing baths. The moulded components contain transparent or translucent (co)polyamides. If the moulded components should be tinted or dyed according to an embodiment of the invention, the dyeing can be performed as homogeneous dyeing or as gradient dyeing. The process according to the present invention is particularly suitable for producing high-value objects like ophthalmic lenses, sun lenses for eyeglasses, magnifying glasses, all kinds of inspection glasses, polarization films and display films, particularly if changing depths of color (gradients) are desired. This generating of a dyeing gradient requires dyeing in a dipping process, whereby the desired depth of color is achieved by multiple times of dipping the surface areas of the moulded article in the dye bath.
Need to check novelty before this filing date? Find Prior Art

Description

FIELD OF INVENTION

[0001] The present invention relates to a novel composition of dye baths or processing baths and a process for tinting, dyeing or doping of moulded components with functional additives in these aqueous dipping baths or processing baths. The moulded components basically contain transparent or translucent (co)polyamides. The temperature of the dipping baths or processing baths is below the glass transition temperature (Tg) of the (co)polyamides. If the moulded components should be tinted or dyed according to an embodiment of the invention, the dyeing can be performed as homogeneous dyeing or as gradient dyeing.

[0002] The process according to the present invention is particularly suitable for producing high-value objects like ophthalmic lenses, tinted lenses for sunglasses, magnifying glasses, all kinds of inspection glasses, polarization films and display films, particularly if changing depths of color (gradients) should be generated.

[0003] This generating of a dy...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More