CA2031050A1 - Coloured golf ball cover material - Google Patents
Coloured golf ball cover materialInfo
- Publication number
- CA2031050A1 CA2031050A1 CA002031050A CA2031050A CA2031050A1 CA 2031050 A1 CA2031050 A1 CA 2031050A1 CA 002031050 A CA002031050 A CA 002031050A CA 2031050 A CA2031050 A CA 2031050A CA 2031050 A1 CA2031050 A1 CA 2031050A1
- Authority
- CA
- Canada
- Prior art keywords
- cover material
- copolymer
- weight
- amount
- ions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B43/00—Balls with special arrangements
- A63B43/008—Balls with special arrangements with means for improving visibility, e.g. special markings or colours
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/0023—Covers
- A63B37/0024—Materials other than ionomers or polyurethane
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0869—Acids or derivatives thereof
- C08L23/0876—Neutralised polymers, i.e. ionomers
Abstract
ABSTRACT
COLOURED GOLF BALL COVER MATERIAL
A golf ball cover material having an intense hue is made from a formulation consisting of an ionic copolymer at least partially neutralised with metal ions, a primary colourant, an opacifier and an optical brightener.
Selection of the metal ions, the degree of neutralisation of the copolymer and the relative amounts of copolymer and colourant provides a series of intense hues.
COLOURED GOLF BALL COVER MATERIAL
A golf ball cover material having an intense hue is made from a formulation consisting of an ionic copolymer at least partially neutralised with metal ions, a primary colourant, an opacifier and an optical brightener.
Selection of the metal ions, the degree of neutralisation of the copolymer and the relative amounts of copolymer and colourant provides a series of intense hues.
Description
1.
COLOURED GOLF BALL COVER MATERIAL
This invention relates to a coloured golf ball cover material of intense hue.
It is often required to impart an intense colour to the cover material of a golf ball, for reasons of identification, advertisement, visibility or security.
Hitherto, attempts have been made to colour the cover material of a golf ball, either by painting an already-moulded cover or by incorporating one or more dyes, pigments or other colourants in the formulation from which the cover is to be produced.
The disadvantages of painting an already-moulded cover are readily apparent. Repeated striking of the ball surface with a golf club during the course of play will damage the painted surface and thus nullify the purpose of having painted the ball.
If a dye, pigment or other colourant is incorporated into the cover formulation prior to moulding, there will be a chemical reaction between said colourant and the other ingredients of said formulation. Frequently, such chemical reaction has been found to lead to undesirable changes in the hue of the finished golf ball cover.
It is well known to those skilled in the art that the primary physical requirements for the cover of a golf ball, namely durability and resilience, are satisfied by the group of substances known as ionic copolymers.
Ionic copolymers are the reaction products of an unsaturated monocarboxylic acid and an olefin, the products being neutralised, to a greater or lesser extent, by means of metal ions. It has been found that colourants are especially liable to react with ionic copolymers, the reaction being further influenced by the identity of the metal ions, the degree of neutral-isation of the of the copolymer and by its Melt Flow ~ . . . .
COLOURED GOLF BALL COVER MATERIAL
This invention relates to a coloured golf ball cover material of intense hue.
It is often required to impart an intense colour to the cover material of a golf ball, for reasons of identification, advertisement, visibility or security.
Hitherto, attempts have been made to colour the cover material of a golf ball, either by painting an already-moulded cover or by incorporating one or more dyes, pigments or other colourants in the formulation from which the cover is to be produced.
The disadvantages of painting an already-moulded cover are readily apparent. Repeated striking of the ball surface with a golf club during the course of play will damage the painted surface and thus nullify the purpose of having painted the ball.
If a dye, pigment or other colourant is incorporated into the cover formulation prior to moulding, there will be a chemical reaction between said colourant and the other ingredients of said formulation. Frequently, such chemical reaction has been found to lead to undesirable changes in the hue of the finished golf ball cover.
It is well known to those skilled in the art that the primary physical requirements for the cover of a golf ball, namely durability and resilience, are satisfied by the group of substances known as ionic copolymers.
Ionic copolymers are the reaction products of an unsaturated monocarboxylic acid and an olefin, the products being neutralised, to a greater or lesser extent, by means of metal ions. It has been found that colourants are especially liable to react with ionic copolymers, the reaction being further influenced by the identity of the metal ions, the degree of neutral-isation of the of the copolymer and by its Melt Flow ~ . . . .
2.
Index. All the foregoing factors can affect the hue, the permanency and the colour intensity of the outer surface of the finished ball. For example, colourants in which red is a major ingredient (e.g. oranges and pinks) tend to "shift" in hue when added to a formulation containing ionic copolymers.
Consequently, it has not hltherto been possible to predict exactly the hue and the colour intensity of a finished golf ball.
It has now been found that lt is possible to determine the eventual hue and intensity of colour of a golf ball cover by carefully selecting the ingredients of the cover material and by taking into account the chemical reaction which occurs between the primary colourant and the other ingredients of the cover formu-lation.
Accordingly, the present invention provides a coloured golf ball cover material of intense hue, said material being made from a formulation which includes (a) an lonic copolymer, said copolymer being the reaction product of an unsaturated monocarboxylic acid having from 3 to 8 carbon atoms and an olefin having from 2 to 8 carbon atoms, said copolymer having a degree of neutralisation by means of metal ions in the range 1% to 90%
and a Melt Flow Index in the range 0.3 to lOO;
(b) a primary colourant in an amount of from 0.05 to 6~ by weight of said copolymer (a);
(c) an opacifier in an amount of from 0.05~ to 4% by weight of said copolymer (a); and (d) an optical brightener in an amount from 0.01 to 1% by weight of said copolymer (a).
. . .
2 Q ~
Index. All the foregoing factors can affect the hue, the permanency and the colour intensity of the outer surface of the finished ball. For example, colourants in which red is a major ingredient (e.g. oranges and pinks) tend to "shift" in hue when added to a formulation containing ionic copolymers.
Consequently, it has not hltherto been possible to predict exactly the hue and the colour intensity of a finished golf ball.
It has now been found that lt is possible to determine the eventual hue and intensity of colour of a golf ball cover by carefully selecting the ingredients of the cover material and by taking into account the chemical reaction which occurs between the primary colourant and the other ingredients of the cover formu-lation.
Accordingly, the present invention provides a coloured golf ball cover material of intense hue, said material being made from a formulation which includes (a) an lonic copolymer, said copolymer being the reaction product of an unsaturated monocarboxylic acid having from 3 to 8 carbon atoms and an olefin having from 2 to 8 carbon atoms, said copolymer having a degree of neutralisation by means of metal ions in the range 1% to 90%
and a Melt Flow Index in the range 0.3 to lOO;
(b) a primary colourant in an amount of from 0.05 to 6~ by weight of said copolymer (a);
(c) an opacifier in an amount of from 0.05~ to 4% by weight of said copolymer (a); and (d) an optical brightener in an amount from 0.01 to 1% by weight of said copolymer (a).
. . .
2 Q ~
3.
Suitably, said unsaturated monocarboxylic acld may be acrylic acid or methacrylic acid and may constitute from 10% to 30% by weight of said copolymer (a).
Said olefin may be, for example, ethylene.
The degree of neutralisation of said copolymer (a) by said metal ions may be in the range 5% to 80~.
The Melt Flow Index of said copolymer (a) may suitably be in the range 1.0 to 7Ø
The primary colourant (b) may be present in said formulation in an amount of from 1% to 3~, preferably 2%, by weight of said copolymer (a).
A suitabIe example of said primary colourant (b~ is RADIANT K6-MG 6038 MAGENTA, which is believed to consist essentially of one or more Rhodamine dyes, for example Rhodamines B and SG, compounded in a thermosetting resin to pigmen~ form and available from Radiant Colour Company.
The opacifier (c) may be present in said formulation in an amount of from 0.05~ to 3~, preferably from 0.5%
to 1.5%, by weight of said copolymer (a).
The preferred opacifier is a material consisting essentially of titanium dioxide.
~ rhe optical brightener (d) may be present in said formulation in an amount of from 0.02% to 0.30~
(preferably 0.05~ to 0.254 and suitably 0.10%) by weight of said copolymer (a).
A suitable optical brightener is available under ~he registered Trade Mark HOSTALUX KSN from Hoechst Celanese.
The metal ions used to neutralise said copolymer may be, for example, lithium ions, sodium ions, magnesium ions, calcium ions or zinc ion~.
Selection of the appropriate metal ions, the degree of neutralisation of said copolymer by said metal ions and the Melt Flow Index of said copolymer will affect the colour of the finished golf ball cover material.
, ,. ., ~ . . .
For example, if the metal ions are sodium ions and the Melt Flow Index of said copolymer (a) is 1.0 and its degree of neutralisation 59%, the eventual cover material will have a fluorescent pale pink hue.
If the copolymer (a) is neutralised to 46~ by zinc ions and its Melt Elow Index is 1.0, the eventual cover material will have a fluorescent brilliant pink hue.
lf copolymer (a) is neutralised to 42% by lithium ions and its Melt Flow Index is 2.6, the eventual cover material will have a fluorescent violet pink hue.
The present invention also extends to golf balls having a coloured cover of intense hue, said cover being made from a formulation as described hereinabove~
~X~MPII;~S
Preferred embodiments Of the preSent inVention Will be illustrated, merely by way o~ example, as follows~
In each example, the cover formulation included:
(i) An ionic copolymer, said copolymer being the reaction product of ethylene and methacrylic acid, said copolymer being neutralised to the degree specified by means of specified metal ions and having a specified Melt Flow Index;
~ii) A pri~ary colourant, said colourant being believed to consist essentially of one or more Rhodamine dyes compounded to pigment form and being available as RADIANT X6-MG 6038 MAGENTA;
(iiiJ An opacif ier (titani.um dioxide) The ingred.ients were compounded and subsequently moulded into ~olf ball covers in a manner well known to those skilled in the art. The relative amounts of said ingredients and the resultin~ hue of the moulded covers are given in the TABLE below:
3 ~
, ~
-- ! ; ` : '. ~ !
-- I I -- N l O ~ _ - ¦
r~- ' -- -- I I N o 1~ ' ` Y
c ~ I !
e _; ~ z ~ .
e ~ e~
z z- I _ ;
C ~ As .,~ I
Suitably, said unsaturated monocarboxylic acld may be acrylic acid or methacrylic acid and may constitute from 10% to 30% by weight of said copolymer (a).
Said olefin may be, for example, ethylene.
The degree of neutralisation of said copolymer (a) by said metal ions may be in the range 5% to 80~.
The Melt Flow Index of said copolymer (a) may suitably be in the range 1.0 to 7Ø
The primary colourant (b) may be present in said formulation in an amount of from 1% to 3~, preferably 2%, by weight of said copolymer (a).
A suitabIe example of said primary colourant (b~ is RADIANT K6-MG 6038 MAGENTA, which is believed to consist essentially of one or more Rhodamine dyes, for example Rhodamines B and SG, compounded in a thermosetting resin to pigmen~ form and available from Radiant Colour Company.
The opacifier (c) may be present in said formulation in an amount of from 0.05~ to 3~, preferably from 0.5%
to 1.5%, by weight of said copolymer (a).
The preferred opacifier is a material consisting essentially of titanium dioxide.
~ rhe optical brightener (d) may be present in said formulation in an amount of from 0.02% to 0.30~
(preferably 0.05~ to 0.254 and suitably 0.10%) by weight of said copolymer (a).
A suitable optical brightener is available under ~he registered Trade Mark HOSTALUX KSN from Hoechst Celanese.
The metal ions used to neutralise said copolymer may be, for example, lithium ions, sodium ions, magnesium ions, calcium ions or zinc ion~.
Selection of the appropriate metal ions, the degree of neutralisation of said copolymer by said metal ions and the Melt Flow Index of said copolymer will affect the colour of the finished golf ball cover material.
, ,. ., ~ . . .
For example, if the metal ions are sodium ions and the Melt Flow Index of said copolymer (a) is 1.0 and its degree of neutralisation 59%, the eventual cover material will have a fluorescent pale pink hue.
If the copolymer (a) is neutralised to 46~ by zinc ions and its Melt Elow Index is 1.0, the eventual cover material will have a fluorescent brilliant pink hue.
lf copolymer (a) is neutralised to 42% by lithium ions and its Melt Flow Index is 2.6, the eventual cover material will have a fluorescent violet pink hue.
The present invention also extends to golf balls having a coloured cover of intense hue, said cover being made from a formulation as described hereinabove~
~X~MPII;~S
Preferred embodiments Of the preSent inVention Will be illustrated, merely by way o~ example, as follows~
In each example, the cover formulation included:
(i) An ionic copolymer, said copolymer being the reaction product of ethylene and methacrylic acid, said copolymer being neutralised to the degree specified by means of specified metal ions and having a specified Melt Flow Index;
~ii) A pri~ary colourant, said colourant being believed to consist essentially of one or more Rhodamine dyes compounded to pigment form and being available as RADIANT X6-MG 6038 MAGENTA;
(iiiJ An opacif ier (titani.um dioxide) The ingred.ients were compounded and subsequently moulded into ~olf ball covers in a manner well known to those skilled in the art. The relative amounts of said ingredients and the resultin~ hue of the moulded covers are given in the TABLE below:
3 ~
, ~
-- ! ; ` : '. ~ !
-- I I -- N l O ~ _ - ¦
r~- ' -- -- I I N o 1~ ' ` Y
c ~ I !
e _; ~ z ~ .
e ~ e~
z z- I _ ;
C ~ As .,~ I
Claims (21)
1. A coloured golf ball cover material of intense hue, said material being made from a formulation which includes:
(a) an ionic copolymer, said copolymer being the reaction product of an unsaturated monocarboxylic acid having from 3 to a carbon atoms and an olefin having from 2 to 8 carbon atoms, said copolymer having a degree of neutralisation by means of metal ions in the range 1% to 90%
and a Melt Flow Index in the range 0.3 to 100;
(b) a primary colourant in an amount of from 0.05%
to 6% by weight of said copolymer (a);
(c) an opacifier in an amount of from 0.05% to 4 by weight of said copolymer (a); and (d) an optical brightener in an amount of from 0.01%
to 1% by weight of said copolymer (a).
(a) an ionic copolymer, said copolymer being the reaction product of an unsaturated monocarboxylic acid having from 3 to a carbon atoms and an olefin having from 2 to 8 carbon atoms, said copolymer having a degree of neutralisation by means of metal ions in the range 1% to 90%
and a Melt Flow Index in the range 0.3 to 100;
(b) a primary colourant in an amount of from 0.05%
to 6% by weight of said copolymer (a);
(c) an opacifier in an amount of from 0.05% to 4 by weight of said copolymer (a); and (d) an optical brightener in an amount of from 0.01%
to 1% by weight of said copolymer (a).
2. The cover material of Claim 1, wherein said unsaturated monocarboxylic acid is one selected from the group consisting of acrylic acid and methacrylic acid.
3. The cover material of Claim 2, wherein said acid constitutes from 10% to 30% by weight of said copolymer (a).
7.
7.
4. The cover material of Claim 1, wherein said olefin is ethylene.
5. The cover material of Claim 1, wherein the degree of neutralisation of said copolymer (a) by said metal ions is in the range 5% to 80%.
6. The cover material of Claim 1, wherein the Melt Flow Index of said copolymer (a) is in the range 1.0 to 7Ø
7. The cover material of Claim 1, wherein said colourant (b) is present in said formulation in an amount of from 1% to 3% by weight of said copolymer (a).
8. The cover material of Claim 7, wherein said colourant (b) is present in said formulation in an amount of 2% by weight of said copolymer (a).
8.
8.
9. The cover material of Claim 1, wherein said colourant (b) consists essentially of one or more Rhodamine dyes compounded in a thermosetting resin to pigment form.
10. The cover material of Claim 3, therein said colourant (b) consists essentially of the dyes Rhodamine B and Rhodamine 5G.
11. The cover material of Claim 1, wherein said opacifier (c) is present in said formulation in an amount of from 0.054 to 3.0% by weight of said copolymer (a).
12. The cover material of Claim 11, wherein said opacifier (c) is present in said formulation in an amount of from 0.5% to 1.5% by weight of said copolymer (a).
13. The cover material of Claim 1, wherein said opacifier (c) consists essentially of titanium dioxide.
9.
9.
14. The cover material of Claim 1, wherein said optical brightener (d) is present in said formulation in an amount of from 0.02% to 0.30% by weight of said copolymer (a).
15. The cover material of Claim 14, wherein said optical brightener (d) is present in said formulation in an amount of from 0.05% to 0.25% by weight of said copolymer (a).
16. The cover material of Claim 15, wherein said optical brightener (d) is present in said formation in an amount of 0.10% by weight of said copolymer (a).
17. The cover material of Claim 1, wherein said metal ions are selected from the group consisting of lithium ions, sodium ions, magnesium ions, calcium ions and zinc ions.
10.
10.
18. The cover material of Claim 17, wherein said metal ions are sodium ions, said copolymer (a) has a degree of neutralisation of 59% and a Melt Flow Index of 1.0, and said cover material has a fluorescent, pale pink hue.
19. The cover material of Claim 17, wherein said metal ions are zinc ions, said coplymer (a) has a degree of neutralisation of 46% and a Melt Flow Index of 1.0, and said cover material has a fluorescent, brilliant pink hue.
20. The cover material of Claim 17, wherein said metal ions are lithium ions, said copolymer (a) has a degree of neutralisation of 42% and a Melt-Flow Index of 2.6, and said cover material has a fluorescent, violet pink hue.
21. A golf ball having a coloured cover of intense hue, said cover being made from the material of Claim 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US45233889A | 1989-12-19 | 1989-12-19 | |
| US452338 | 1989-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2031050A1 true CA2031050A1 (en) | 1991-06-20 |
Family
ID=23796091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002031050A Abandoned CA2031050A1 (en) | 1989-12-19 | 1990-11-28 | Coloured golf ball cover material |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH03267075A (en) |
| AU (1) | AU6816790A (en) |
| CA (1) | CA2031050A1 (en) |
| GB (1) | GB2239253A (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU555564B2 (en) * | 1983-08-01 | 1986-10-02 | Top-Flite Golf Company, The | Golf ball |
| US4679795A (en) * | 1983-08-01 | 1987-07-14 | Spalding & Evenflo Companies, Inc. | Optical brighteners in golf ball covers |
| JPS61119283A (en) * | 1984-11-05 | 1986-06-06 | 住友ゴム工業株式会社 | Golf ball |
-
1990
- 1990-11-28 CA CA002031050A patent/CA2031050A1/en not_active Abandoned
- 1990-12-03 GB GB9026217A patent/GB2239253A/en not_active Withdrawn
- 1990-12-17 JP JP2402896A patent/JPH03267075A/en active Pending
- 1990-12-17 AU AU68167/90A patent/AU6816790A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| GB9026217D0 (en) | 1991-01-16 |
| AU6816790A (en) | 1991-06-27 |
| JPH03267075A (en) | 1991-11-27 |
| GB2239253A (en) | 1991-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |