 Multilayer golf ball |
| The present invention is directed towards a multi-layer golf ball which provides a soft feel ... |
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| Golf ball |
| The present invention is directed towards a multi-layer golf ball which provides a softer feel ... |
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| Golf ball |
| OF THE INVENTION This invention is particularly directed towards liquid filled center core shells ... |
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| Multi-layer golf ball and method of manufacturing |
| The present invention relates to a golf ball which consists of a core surrounded by a cover. The ... |
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| Multilayer golf ball and composition |
| OF THE PREFERRED EMBODIMENTS The following terms that are used in this application are defined in ... |
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| Method of making a golf ball with a multi-layer core |
| The present invention is directed to an improved golf ball having a core comprised of a center and ... |
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| Electrophoretic device and method of manufacturing it |
| It is an object of the invention to provide an electrophoretic device that has remarkably improved ... |
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| Electrophoretic display and novel process for its manufacture |
| One aspect of the present invention is directed to an array of filled and top-sealed display cells ... |
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| Method for making uniformly sized particles from water-insoluble organic compounds |
| The invention involves a method of making uniformly sized particles of a solid, water-insoluble ... |
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| Microcapsules based on gelatin and polysaccharides and process for obtaining same |
| What is claimed is: 1. A process for preparing microcapsules containing an encapsulated substance ... |
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Golf ball
| Details |
Inventors: Kataoka, Nobuyuki; Saito, Tasuku; Matsunaga, Tsutomu; Tanaka, Chiaki; Furuta, Yoko; Naito, Nagayoshi;
Assignee: Bridgestone Tire Co., Ltd. (both of, JP); Toray Industries, Inc. (both of, JP)
Primary Examiner: Phynes; Lucille M.
Assistant Examiner:
Attorney, Agent or Firm: Miller; Austin R.
A solid type golf ball comprising a central core and an outer cover for the core and having an excellent flight performance and durability and acceptable "click" characteristics is presented. The main component of the outer cover of this golf ball is a polyetherester block copolymer containing the following X, Y and Z units: X: Butylene terephthalate unit Y: Ester unit other than butylene terephthalate Z: Polyetherester unit derived from a dicarboxylic acid component containing terephthalic acid and poly(alkylene oxide) glycol having a number average molecular weight of 400 through 3000, wherein the X, Y and Z units are present in the following amounts: 30% by weight .ltoreq.X.ltoreq.80% by weight 0% by weight .ltoreq.Y.ltoreq.50% by weight 20% by weight .ltoreq.Z.ltoreq.70% by weight. |
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DETAILED DESCRIPTION We claim: 1.
In a solid type golf ball comprising a central core and an outer cover for the core, the improvement wherein the main component of the outer cover is at least one polyetherester block copolymer containing the following X, Y and Z units: X: Butylene terephthalate unit Y: Ester unit other than butylene terephthalate Z: Polyetherester unit derived from a dicarboxylic acid component containing terephthalic acid and poly(alkylene oxide) glycol, having a number average molecular weight of 400 through 3000, wherein the X, Y and Z units are present in the following amounts: 30% by weight.
ltoreq.
X.
ltoreq.
80% by weight 0% by weight.
ltoreq.
Y.
ltoreq.
50% by weight 20% by weight.
ltoreq.
Z.
ltoreq.
70% by weight.
2.
A golf ball as claimed in claim 1, wherein the amounts of X, Y and Z units in the polyetherester block copolymer are: 40% by weight.
ltoreq.
X.
ltoreq.
70% by weight 0% by weight.
ltoreq.
Y.
ltoreq.
30% by weight 30% by weight.
ltoreq.
Z.
ltoreq.
60% by weight.
3.
A golf ball as claimed in claim 1, wherein said polyetherester block copolymer has a stress at 10% elongation of 40 through 200 Kg/cm.
sup.
2.
4.
A solid type golf ball comprising a central core and an outer cover for the core, wherein the main component of the outer cover is at least one polyetherester block copolymer containing the following X, Y and Z units: X: Butylene terephthalate unit Y: Ester unit other than butylene terephthalate Z: Polyetherester unit derived from a dicarboxylic acid component containing terephthalic acid and poly(alkylene oxide) glycol, having a number average molecular weight of 400 through 3000, wherein the X, Y and Z units are present in the following amounts: 30% by weight.
ltoreq.
X.
ltoreq.
80% by weight 0% by weight.
ltoreq.
Y.
ltoreq.
50% by weight 20% by weight.
ltoreq.
Z.
ltoreq.
70% by weight.
Description:
The present invention relates to a multi-piece solid type golf ball and, more specifically, it relates to a multi-piece solid type golf ball in which a material containing, as a main component, polyetherester block copolymer having a particular structure is used as an outer cover of the solid type golf ball comprising one or more pieces
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Nonmetallic Processes 
