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Polyamide blend film

A polyamide and film technology, applied in polyamide coatings, thin material processing, synthetic resin layered products, etc., can solve the problems of difficult realization and cost of basic paint formulations and process conditions

Active Publication Date: 2010-05-26
EVONIK OPERATIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But due to different substrates, available basic paint formulations and process conditions it is very difficult to achieve this
In the case of color differences predetermined by design, the provision of a second painting plant for plastic parts and the associated outlay is still a major disadvantage, where the additional time required for the production of the car is also taken into account

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 2-6

[0031] In the case of embodiments 2-6, first the transparent cover layer, eg a single film, can be printed on one or both sides and then bonded to the remaining layers in a second step to give a multilayer film. In multilayer films, the transparent overlay is printed from above. The coating can also be transparently or opaquely colored.

[0032]In a preferred embodiment, the colored layer and / or the carrier layer contain molding compositions, in particular polyetheramides or polyetheresteramides, preferably containing Molding compositions of polyetheramides or polyetheresteramides of type aliphatic diamines, polyetheramides based on linear aliphatic or aromatic dicarboxylic acids containing 6-18 C-atoms and preferably 6-12 C-atoms or Molding compositions of polyetheresteramides and molds of polyetheramides or polyetheresteramides based on polyethers containing more than an average of 2.3 C-atoms per oxygen atom and the polyether blocks have a number-average molecular weight o...

Embodiment 1-4 and comparative Embodiment A-E

[0052] The compositions and results are listed in Tables 1-5.

[0053] Table 1: Composition of the cladding

[0054]

Example

PA1012 (parts by weight)

PA12 (parts by weight)

stabilizer

(parts by weight)

A

100

B

100

C

20

80

1

60

40

2

80

20

D

20

80

0.8

E

40

60

0.8

3

60

40

0.8

4

80

20

0.8

[0055] Table 2: Transparency of single film (400μm)

[0056] Example

A

B

C

1

2

transparency

(500nm)

88.2％

87.6％

89.4％

89.8％

89.1％

[0057] table 3: Coating formation during rapid weathering test (gloss measurement at 60° on 400 μm film; data given in gloss units)

[0058] Duration (h)

A

B

3

4

D

E

0...

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PUM

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Abstract

The invention relates to a film with a top layer made of a moulding compound consisting essentially of the following components: (a) 3 to 50 wt.% of a polyamide selected from groups PA11 and PA12, and(b) 50 to 97 wt.% of a polyamide selected from groups PA1012 and PA1212, the percentages relating to the total of components (a) and (b). The film is suitable for decorating mouldings that retain their gloss throughout their useful life.

Description

technical field [0001] The invention provides a film which contains a layer formed from a polyamide blend and is suitable for decorating moldings. Background technique [0002] The standard process currently used to decorate the exterior surfaces of automobiles is painting. However, such a procedure entails high manufacturing costs due to the provision of specific machine tools and thus operating outlays for the vehicle manufacturer, as well as a negative impact on the environment. Unfavorable effects on the environment arise, for example, from the solvent content of the lacquers used and from pigment residues which must be disposed of properly. [0003] Furthermore, this varnishing is suitable only to a limited extent for the surface of decorative plastic components, which have been widely used in automobile construction in recent years due to the need to reduce weight and save costs. [0004] The painting process of plastic components as body parts is carried out, for ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08J5/18B32B27/34
CPCB32B27/34C09D177/00B32B5/18C09D177/06C08L77/02C08L77/06C08L2205/02Y10T428/269Y10T428/26Y10T428/12493Y10T428/31732Y10T428/31728Y10T428/249992Y10T428/31739Y10T428/31725C08L2666/20C08J5/12C08L77/00
Inventor R·武舍S·博尔曼H·黑格尔M·维尔皮茨K·阿尔廷M·拜尔F·-E·鲍曼
Owner EVONIK OPERATIONS GMBH