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A liquid silicone rubber composition for forming breathable coating film on a textile and process for forming a breathable coating film on a textile

A liquid silicone rubber, composition technology, applied in the direction of coating, etc., can solve the problem of not teaching LSR composition application and the like

Inactive Publication Date: 2011-08-24
DOW CORNING KOREA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this U.S. patent does not teach the application of LSR compositions on fabrics requiring higher water vapor permeability

Method used

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  • A liquid silicone rubber composition for forming breathable coating film on a textile and process for forming a breathable coating film on a textile
  • A liquid silicone rubber composition for forming breathable coating film on a textile and process for forming a breathable coating film on a textile

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Experimental program
Comparison scheme
Effect test

Embodiment

[0064] Coating composition of the present invention is prepared by following A and B two parts:

[0065] Part A, Vi-siloxane 1, fumed silica, silazane, silazane 2, and water were stirred in a high shear mixer (like Turello) for 1.0-2.0 hours, then vaporized under vacuum at 180°C. Extract to form a homogeneous mixture. The mixture was cooled to room temperature. The thermally expandable capsules are mixed into the mixture, and then the platinum catalyst is added. The mixture was filtered to obtain Part A of the composition.

[0066] Part B, by mixing Vi-siloxane 1, Vi-siloxane 2, fumed silica, silazane, and water in a high-shear mixer (such as Turello) for 1.0-2.0 hours, then at 180°C Stripped under vacuum and cooled to room temperature to form a homogeneous mixture. The H-silicone and inhibitor are mixed into the above mixture, and the mixture is then filtered to obtain Part B of the composition.

[0067] The amounts of these components are listed in the table below. The...

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Abstract

This invention relates to a liquid silicone rubber (LSR) composition useful for forming a breathable coating film on a textile, in particular, woven, non-woven or knitted fabric and synthetic leather, and a process for producing a breathable coating film on a textile. This coating film is characterized by showing moisture permeation and water proofness.

Description

technical field [0001] The invention relates to a liquid silicone rubber composition for forming a breathable coating film on fabrics, especially woven fabrics, non-woven fabrics, knitted fabrics and synthetic leather, and a method for forming a breathable coating film on fabrics method. By "breathable coating film" is meant a film that is permeable to moisture, but not to water droplets. Background technique [0002] Liquid silicone rubber (LSR) is well known in the silicone industry for forming a liquid and curing to form an elastomeric silicone rubber. LSR has been attractively applied to textile fabrics due to its soft hand and wash resistance. Therefore, fabrics with LSR coating, such as woven fabrics, non-woven fabrics or knitted fabrics and synthetic leather, are useful in outerwear, shoes, and upholstery such as seats, chairs, sofas, and the like. [0003] The LSR coating is breathable and water repellent inherent in the elastomer itself. Because the moisture vap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04
CPCC09D183/04C08K7/22C08G77/20C08G77/12C08K5/56C08L83/00C08L83/04
Inventor 金寿洪
Owner DOW CORNING KOREA