Compositions for Golf Equipment

Inactive Publication Date: 2007-07-26
ACUSHNET CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyurea compositions can be difficult to process during golf ball manufacturing.
The enhanced viscosity can cause drooling at the nozzle, which leads to the production of substandard balls, and necessitates changing of the nozzle more frequently.

Method used

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  • Compositions for Golf Equipment
  • Compositions for Golf Equipment
  • Compositions for Golf Equipment

Examples

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examples

[0337] The following non-limiting examples are included herein merely for illustration, and are not to be construed as limiting the scope of the present disclosure.

[0338] Conventional polyurea golf ball cover compositions were prepared by reacting a polyurea prepolymer (H12MDI / Jeffamine® D2000 with 7% post added triisocyanate) with 4,4′-bis(sec-butylamino)-dicyclohexylmethane (Clearlink® 1000). Fast reactivity caused the material to drool at the nozzles, requiring constant cleaning / replacing of the nozzles and cleaning of the molds.

[0339] Polyurea golf ball cover compositions of the present invention were similarly prepared, with the exception that propylene carbonate was added to the reaction mixture in varying amounts from 0.5 wt % to 6 wt %, based on the total weight of the polymer. There was no drool at the nozzle and the material was dispensed for an hour without any accumulation at the tip of the nozzle.

[0340] When numerical lower limits and numerical upper limits are set f...

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Abstract

The present invention is directed to golf balls having at least one layer formed from a polyurea composition. The polyurea is formed by combining an aliphatic polyarea prepolymer, a diamine curative, and a cyclic carbonate diluent. Golf balls of the present invention include one-piece, two-piece, multi-layer, and wound golf balls. The composition may be present in any one or more of a core layer, a cover layer, or an intermediate layer.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation-in-part of U.S. patent application Ser. No. 11 / 162,544, filed Sep. 14, 2005, which is a continuation-in-part of U.S. patent application Ser. No. 10 / 859,557, filed Jun. 2, 2004, now U.S. Pat. No. 7,105,628, the entire disclosures of which are hereby incorporated herein by reference.FIELD OF THE INVENTION [0002] The present invention is directed to polyurea compositions formed by combining an aliphatic polyurea prepolymer, a diamine curative, a cyclic amidine delayed action catalyst, and a cyclic carbonate diluent. The present invention is also directed to the use of such compositions in golf equipment. BACKGROUND OF THE INVENTION [0003] Polyureas are known to be potentially useful materials for golf ball covers. However, polyurea compositions can be difficult to process during golf ball manufacturing. For example, when a polyurea prepolymer is reacted with a diamine curative in a typical castable moldin...

Claims

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Application Information

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IPC IPC(8): A63B37/00C08G18/00C08G18/10C08G18/50C08G18/69C08G18/75C08G69/26C09D175/12
CPCA63B37/0003A63B37/0031C09D175/12C08G18/758C08G18/69C08G18/5024C08G18/10C08G18/0852A63B37/12A63B37/0092A63B37/0091A63B37/0033A63B37/0035A63B37/0043A63B37/0045A63B37/0047A63B37/0061A63B37/0062A63B37/0064A63B37/0065A63B37/0066A63B37/0068A63B37/0075A63B37/0076A63B37/0084A63B37/0086C08G18/792C08G18/3234C08G18/3206C08G18/324C08G18/5021
Inventor RAJAGOPALAN, MURALIKUNTIMADDI, MANJARIWU, SHENSHENRICCI, SHAWNHARRIS, KEVIN
Owner ACUSHNET CO
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