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Polyurethane polymer, synthetic leather and method

A polyurethane polymer, fluorinated technology, applied in the field of synthetic leather, polyurethane polymer, forming polyurethane polymer, can solve problems such as low hydrolysis resistance

Inactive Publication Date: 2017-06-13
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, short-chain fluoroalcohol analogs such as C6 telomers (C 6 f 13 CH 2 CH 2 OH) and C4 sulfinamido alcohol (C 4 f 9 SO 2 N(CH 3 )C 2 h 4 OH) has low hydrolysis resistance

Method used

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  • Polyurethane polymer, synthetic leather and method
  • Polyurethane polymer, synthetic leather and method

Examples

Experimental program
Comparison scheme
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example

[0207] Objects and advantages of this disclosure are further illustrated by the following examples, but the particular materials and amounts thereof recited in these examples, as well as other conditions and details, should not be construed to unduly limit this disclosure.

[0208] The following examples are for illustration purposes only and are not intended to limit the scope of the appended claims in any way. All parts, percentages, ratios, etc. in the examples are by weight unless otherwise specified. Unit abbreviations used include: h = hour, g = gram, wt = weight. Materials were obtained from Sigma-Aldrich, Milwaukee, WI unless otherwise stated.

[0209] Material

[0210]

[0211] Contact Angle Measurement

[0212] Contact angle measurements were performed using a drop shape analysis system DSA-100 (Kruss, Hamburg, Germany) equipped with digital image analysis software.

example 1-6

[0220] These examples use very low amounts of fluorodiols and monofunctional fluoroalcohols in combination. All reaction mixtures used a combined percentage of 0.66% by weight of fluorinated aliphatic diol and monofunctional alcohol based on the polyurethane polymer.

[0221] Comparative Example 1 was repeated, but using the materials and amounts shown in Table 2. Examples 1-3 had a combination of C4 diol and C4 alcohol added to DMF, while Examples 4-6 had a combination of C4 diol and C6 alcohol added to DMF. In all these examples, the molar ratio between the NCO groups of MDI and the OH groups of P1200 was 2.0. In all cases, the resulting PU was 30% solids in DMF, and clear, flexible, tough PU films were obtained after drying. The contact angle was measured as described in "Contact Angle Measurement", and the measured contact angle is shown in Table 1. All contact angles were 97 degrees or greater.

[0222] Table 1

[0223]

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PUM

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Abstract

The present invention provides polyurethane polymers, synthetic leathers comprising such polymers, and methods of making such polymers, wherein the polyurethane polymers comprise the reaction product of components comprising: a fluorinated monofunctional alcohol comprising Perfluorinated (C4‑C6) alkyl groups, perfluorinated (C4‑C6) alkylene groups, or both; fluorinated aliphatic diols containing perfluorinated (C4‑C6) alkyl groups groups, perfluorinated (C4-C6) alkylene groups, or both; hydrocarbon diols; and diisocyanates; wherein at least one of the following conditions is met: the total amount of fluorinated aliphatic diols and monofunctional alcohols less than 2% by weight of the components forming the polyurethane polymer; or less than 1% by weight of the polyurethane polymer in total fluorine content.

Description

Background technique [0001] Polyurethanes are widely used in the manufacture of a variety of products including synthetic leather. These polyurethane-based synthetic leathers are mainly used in four product categories: footwear; upholstery materials such as car seats, sofas and chairs; personal products such as handbags and gloves; and sporting goods such as footballs. [0002] Many of these synthetic leather products and applications require stain and hydrolysis resistance properties. For example, water absorption and hydrolysis of polyurethane (PU) can seriously increase the weight of footballs and reduce their lifespan. Therefore, it is desired to increase the hydrophobicity and hydrolysis resistance of PU resins. [0003] Therefore, in order to reduce the surface energy of synthetic leather, the use of fluorine-containing (FC) alcohols in PU processing has become a common practice for synthetic leather polyurethane manufacturers. For the past 20 years or so, synthetic l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/50C08G18/28C08G18/38D06M15/256D06M15/576D06N3/00D06N3/14
CPCC08G18/5015C08G18/2885C08G18/3812D06N2209/142D06N3/146D06N2211/28Y10T442/2213D06N3/14C08G18/06
Inventor 凯坦·P·雅里瓦拉韦恩·W·法恩卢勇尚
Owner 3M INNOVATIVE PROPERTIES CO