Unlock instant, AI-driven research and patent intelligence for your innovation.

Inhibitor compositions for pylons when using chrome-free etchants in plastic plating processes

A technology of composition and inhibitor, which is applied in the field of polymer insulating part and inhibiting hanger, and can solve the problems of no longer insulating area and so on

Active Publication Date: 2021-06-29
麦克德米德乐思公司
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the use of alternative etching methods causes the problem that suppression of the insulating regions of the pylons no longer occurs as in chrome-based etching methods.

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Inhibitor compositions for pylons when using chrome-free etchants in plastic plating processes
  • Inhibitor compositions for pylons when using chrome-free etchants in plastic plating processes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Embodiment 1 (according to the present invention)

[0085] Aqueous inhibiting compositions were provided by adding the following inhibitors to 1000ml of water. The effect on the metallization of the pylon insulation by using the aqueous inhibiting composition of the invention after the stripping step of the pylon hooks and before loading the plastic parts under different conditions is described in Table 1 below. As a reference, the pylons were immersed in tap water under different conditions without the addition of inhibitory compounds.

[0086] Table 1:

[0087]

[0088] Wherein A=2-(methylthio)-2-thiazoline; B=thiourea; C=4-methylthiosemicarbazide; D=potassium thiocyanate; E=5-methyl-2-thiouracil ; F = 1-diphenyl-2-thiourea; G = 5-methyl-2-thiohydantoin; H = HEAT (hydroxyethyl-allylthiourea).

Embodiment 2

[0089] Embodiment 2 (according to the present invention)

[0090] An aqueous inhibitory composition was provided by adding the following inhibitors to 1000ml of pre-cleaner. The effect on the metallization of the pylon insulation by using this aqueous inhibiting composition after loading the plastic part to be metallized under different conditions is described in Table 2 below. As a reference, pylons were immersed in the same pre-cleaner solution under different conditions without the addition of inhibiting compounds.

[0091] Table 2:

[0092]

[0093] Wherein A=2-(methylthio)-2-thiazoline; B=thiourea; C=4-methylthiosemicarbazide; D=potassium thiocyanate; E=5-methyl-2-thiouracil ; F = 1-diphenyl-2-thiourea; G = 5-methyl-2-thiohydantoin; H = HEAT (hydroxyethyl-allylthiourea).

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

PUM

No PUM Login to View More

Abstract

The present invention relates to an aqueous inhibitory composition for inhibiting electrochemical metal plating on polymer surfaces, said inhibitory composition comprising an inhibitor selected from the group of compounds having at least one sulfur and at least one nitrogen atom , and relates to a method for inhibiting an insulating surface in the area of ​​a pylon. The inhibiting composition of the present invention can provide a solution for inhibiting unintended metallization on insulating areas of pylons when applying chromium-free etching in plastic plating processes.

Description

technical field [0001] The present invention relates to an inhibitor composition for preventing polymeric insulating portions of hangers in a plating on plastics process using a chrome-free etchant. Furthermore, the present invention relates to a method of inhibiting hangers in a plastic plating method using a chrome-free etchant. Background technique [0002] It is well known in the field of surface technology to coat the surface of plastic parts with metals such as copper, nickel or chromium by electrochemical plating methods for decorative or technical purposes. [0003] Components to be electrochemically plated are usually mounted on a hanger and are in electrical contact with it. The contacts are composed of pure metal, as current is required from the pylon to each part, to ensure plating. However, the rest of the rack is usually insulated with an inert polymer to prevent metal plating on the rest of the rack, ie on areas of the rack that are not contacts of the parts...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C03C15/00C25D17/08C25D5/00
CPCC23C18/1625C08J7/02C08J7/06C08J7/065C25D5/56C25D17/08C23C18/1653C23C18/2086C23C18/22C23C18/30C23C18/32C23C18/38C23C18/163C23C18/1641C08J7/044C09K15/26C09K15/30C25D5/34C25D21/11
Inventor F·诺福克A·科尼格绍芬A·福尔曼恩C·沃纳尔
Owner 麦克德米德乐思公司