Golf Balls Including A Crosslinked Thermoplastic Polyurethane Cover Layer Having Improved Scuff Resistance

a thermoplastic polyurethane and golf ball technology, applied in the field of golf balls, can solve the problems of poor scuff resistance of ionomer resin-covered golf balls, cover surface scraping, and poor scuff resistance of ionomer covers

Inactive Publication Date: 2012-05-10
NIKE INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Each type of polymer material present advantages and disadvantages when used to manufacture golf balls.
However, ionomer resin covered golf balls suffer from the problem that the cover surface may be scraped off by grooves on a clubface during repeated shots, particularly with irons.
In other words, ionomer covers have poor scuff resistance.
Also, ionomer covered balls usually have inferior spin and feel properties as compared to balata rubber or polyurethane covered balls.
The use of softer ionomer resins for the cover will improve spin and feel to some extent, but will also compromis...

Method used

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  • Golf Balls Including A Crosslinked Thermoplastic Polyurethane Cover Layer Having Improved Scuff Resistance
  • Golf Balls Including A Crosslinked Thermoplastic Polyurethane Cover Layer Having Improved Scuff Resistance
  • Golf Balls Including A Crosslinked Thermoplastic Polyurethane Cover Layer Having Improved Scuff Resistance

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[0086]Two golf balls in accordance with the present disclosure were fabricated as described below, and their scuff resistance was compared to several comparative examples.

[0087]For each golf ball, the core was made from a material selected from Table 1, and the cover layer was made from a material selected from Table 2. The amount of the materials listed in Tables 1 and 2 is shown in parts by weight (pbw) or percentages by weight.

TABLE 1Core MaterialsRubber compound:ABTAIPOL ™ BR0150*100100Zinc diacrylate2825Zinc oxide55Barium sulfate1618Peroxide11

[0088]TAIPOL™ BRO150 is the trade name of a rubber produced by Taiwan Synthetic Rubber Corp.

TABLE 2Cover MaterialsCDEFGHIPTMEG (pbw)100  100  100100BG (pbw)15  15  1515TMPME 10% 10%010%(weight %to totalcomponents)DCP0.2%0.5%00(weight %to totalcomponents)MDI (pbw)87.887.855.087.8(NCO index) 1.01 1.011.011.01Texin ® 245100Elastollan ®1001195ASurlyn ® 894050Surlyn ® 991050

[0089]“PTMEG” is polytetramethylene ether glycol, having a number avera...

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Abstract

This disclosure relates to golf balls having a cover layer made from a crosslinked thermoplastic polyurethane elastomer. The crosslinked thermoplastic polyurethane elastomer includes crosslinks located in the hard segments, where the crosslinks being the reaction product of unsaturated bonds located in the hard segments catalyzed by a free radical initiator. The crosslinks may be formed from an unsaturated diol as a chain extender. The unsaturated diol may be trimethylolpropane monoallylether (TMPME). The cover layer may have certain properties, such as a desirable flexural modulus value and a desirable Shore D hardness value, that further contribute to the golf ball having a high degree of scuff resistance.

Description

STATEMENT OF RELATED APPLICATIONS[0001]This application is a continuation-in-part application of co-pending application Ser. No. 12 / 827,360, filed Jun. 30, 2010 the entirety of which is hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to golf balls and their manufacture, and in particular to golf balls having thermoplastic polyurethane covers.[0004]2. Description of Related Art[0005]Golf ball covers are generally divided into two types: thermoplastic covers and thermoset covers. Thermoplastic polymer materials may be reversibly melted, and so may be used in a variety of manufacturing techniques such as compression molding that take advantage of this property. On the other hand, thermoset polymer materials are generally formed by mixing two or more components to form a cured polymer material that cannot be re-melted or re-worked. Each type of polymer material present advantages and disadvantages when used t...

Claims

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Application Information

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IPC IPC(8): A63B37/12
CPCA63B37/0003A63B37/0024A63B37/0031A63B37/0037B29C70/70A63B37/0061A63B37/12B29C45/14819A63B37/0039C08G18/4854C08G18/6674C08G18/675C08G18/7671C08L75/14C08F299/065A63B37/0023C08G18/86A63B37/0059A63B37/0076
Inventor ISHII, HIDEYUKICHOU, CHIEN-HSINCHENG, HSINHUANG, CHUNG-YUICHIKAWA, YASUSHILIU, CHEN-TAI
Owner NIKE INC
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