DE1678227A1 - Spielbaelle - Google Patents

Description

Game balls

[Addition to patent "<, <, _βοοα (patent application D 51 068 Ic / 77a)]

The invention relates to game balls and, more particularly, to game balls useful as golf balls and methods of making them.

The common tournament grade golf ball is usually a ball of excellent quality and generally recognized by professional golfers and other serious golfers as superior to any other type of construction. The manufacture of such However, balls are an expensive proposition in terms of their composite structure, the winding of an elastic thread of considerable length makes it necessary to have a core which, in the case of balls of the best quality, consists of a bag with a liquid

BATH ORIGINAL

209831/0101

Composition consists of what requires a freezing stage in order to be able to wind the thread in grooved catfish. As a result of these and other manufacturing difficulties, tournament quality balls are expensive and there is a demand for simpler, cheaper types of balls that would satisfy many golfers and for the rapidly growing game sport on golf courses would be sufficient »There were numerous plans _{9 to form} golf balls from a homogeneous composition into" solidly shaped balls ", as one is never generally called * or to form one-component balls. Although such balls can be manufactured very cheaply, they generally suffer the serious disadvantage of being fragile and subsequently disintegrating. Various measures have been proposed to mitigate this disadvantage, but to this day solid shaped balls are generally not recognized by serious golfers "

It has now been found that golf balls of very good quality can be obtained by using simple molding techniques, but in conjunction with a separate cover for uses the ball »Accordingly, the present invention provides a game ball, particularly a golf ball in in the form of a composite ball, i.e. the ball contains a core and a shell, the core contains a mixture of natural

209831/0101

Rubber or a synthetic rubber with a copolymer of at least one olefin and at least one hiereit copolymerizable unsaturated carboxylic acid, said copolymer, the unsaturated carboxylic acid in an amount of Bwei to 40 wt _o - contains # the interpolymer, and in the mixture in an amount of 5 to 95% by weight of the mixture is present. The core can be a molded piece in one piece or consist of 2 or more ropes,

The copolymers that can be contained in the mixtures are copolymers of at least one olefin with at least one unsaturated carboxylic acid and can either be random copolymers in which the molecular chains are composed of the various polymerized monomers, or they can be graft copolymers , which are produced »by polymerizing the unsaturated, monomeric carboxylic acid onto the molecular chain backbone of the polyolefin» They graft polymers can be produced using one of the tried and tested working techniques, « ₀ B« by irradiation, for example with y or UcY »radiation, des mixture of polyolefin and unsaturated carboxylic acid., Bas copolymer can gewttnachtenfalls small amounts, e.g., _o less than 10 wt .- ^, of other monomers such as Tinylalkancarbonsäureester, alky! acrylates or methacrylates Alky! contain "The

209831/0101

Copolymers can also be mixed with other ethylene copolymers, a B =, copolymers of ethylene and vinylalkanecarboxylic acid esters, alkyl acrylates or alkyl methacrylates, in an amount of up to 20% by weight of the copolymer O

Sas olefin preferably contains a small number of carbon "atoms in the molecule and a particularly useful olefin is Äthy ~ leno The unsaturated carboxylic acid can be a dicarboxylic acid such as maleic be, but is preferably a mono-carboxylic acids s" B "acrylic acid, methacrylic acid, itaconic acid, crotonic acid and sorbic acid · Mixtures of different dicarboxylic acids can be used, and metal salts of the acids in which the metal is 1 to 4 w * tig, z =, B »sodium or zinc salts, can be used to xerpolymers with the olefin and a free Acid formation o A typical polymerizate is a polymer made from ethylene, methacrylic acid and sodium methacrylate

The copolymers may contain up to 40 wt _o - # unsaturated carboxylic acid comprise, based on the weight of the interpolymer, but preferably contain up to 20 wt _o - # c When a metal salt of an acid is used, the metal is usually present in an amount of at least 10 #, preferably at least 50 #, of the stoichiometric equivalent of the carbon »

209831/0101

BAD ORlGlHAL

acid present. The copolymers are thermoplastic and usually have a lower softening point than olefin homopolymers

The copolymers preferably contain a number of thermally unstable crosslinks in order to reduce the hardness and rigidity of the products produced in this way solid mixture to increase. This can be achieved by using a polymer with a metal salt of the acid, as described above, and / or a metal salt can be reacted with the copolymer at elevated temperatures, so that the volatile constituents are removed (before die'mischpolymerisate are used to fabricate the ball. which contain the thermolabile crosslinks remain thermoplastic, although the viscosity of the molten mass is greater is than that of a hater who does not contain the thormolabile cross-links. The thenaolabile, crosslinked mass has an increased hardness and Iv compared to a non-crosslinked mass Toughness.

Bas Mittil, which is used to introduce the thermolabile cross-links into the copolymer, is an inorganic metal compound that allows the metal ions to associate with the reactive carbonyl groups in the polymer, typical metal compounds that can be used are acetates, oxides , Carbonates and hydroxides _{α are} preferred

209831/0101 bad or _IG1NA l

mono- or divalent metal compounds used, examples of suitable compounds are the acetates of sodium and potassium or the oxides of calcium, magnesium and zinc _o Compounds of trivalent and tetravalent metals such as aluminum or lead can also be used.

The amount of thermolabllem crosslinking agent that is mixed with the copolymer is usually so large that the total amount of metal ions, including the metal ions of Metal salt of acid, lower than the stoichiometric Equivalent, as it was defined above, »Winning cases can have two or more different thermolabile crosslinking agents be used.

The copolymer is used in the form of a mixture with a natural rubber or any synthetic rubber and examples of suitable synthetic rubbers are polybutadiene (especially polybutadiene), copolymers of butadiene with styrene or acrylonitrile, polybutylene, copolymers of ethylene with propylene or higher a- 01 «- finen, polyisoprene, polychloroprene and elastomeric block copolymers of the general formula A- (BA) _n , where A is a non-elastomeric block such as polystyrene and B is an elastomeric block such as polybutadiene and η is a whole number with one

209831/0101

BATH ORIGINAL

Value from 1 to 6, preferably 1, is _o Bs of course, that mixtures or devices of synthetic rubbers or of natural rubber and one or more synthetic rubbers can be used. The rubber is preferably cis-polybutadiene or a mixture or mixture of ice-polybutadiene with natural rubber "in this latter Pail should the cis-polybutadiene f in an amount of at least 50> the mixture or dee mixture be present * ΕΙώ high molecular ois ~ Polybutadi @ n is preferred, s _e B _e a Polymer with a molecular weight of 2x10 'to 2x10

The mixture of the olefin / unsaturated carboxylic acid copolymer and the rubber can be prepared by mixing the two components together in a mill or in an internal mixer at elevated temperature. The temperature can geeigneterweiB'i 30 to 5Q ⁰ C higher than the melting point of 01 © - fin / unsaturated Carbonsäuremischpolymerisates "Palis required PUllstoffe, coloring agents and antioxidants can during Misc; hens su Oer mixture are added then before · The mixture the addition of hardeners, cooled ^{to 90 to 120 0} _{G 9} after which the mass can be cooled and chipped or granulated.

The mixture contains the olefin / unsaturated carboxylic acid copolymer in an amount of 5 to 95 wt .- ^ of the mixture, usually

209831/0101

BATH ORIGINAL

borrowed from 30 to 70 wt .- #, and preferably from 40 to 60 parts by weight 5S ₀ The composition (or the composition of the mixture) can curable soaped and curing can effected by use of organic peroxides as Härtungßffiittel ₉ as DicumylperoKyd _e or sulfur or the hardening can be achieved * if desired by B © - strahlurg »The use of sulfur leads to the crosslinking of the rubber component, so a peroxide hardener is preferred„ which leads to the crosslinking of both or all components of the mixture whereby one obtains a strongly fading ball which is not defeated under the conditions of a stroke with a golf club «,

The hardenable® Mass © of the mixture is usually hardened by heating it to an elevated temperature in the presence of a hardener _? suitable Siem peratures are from 150 to 250 ⁰ O ₀ The mass is also usually molded to form the ball core at a! temperature of 150 to 250 ° ö. Shaping and curing are thus usually substantially simultaneously caused DI® Mass © can be formed into a bale core by various molding techniques, "B" z by spraying, pressing, or transfer molding _o If the mass during the Forepr © seens is cured, the for Hardening time is usually short, between 20 and 60 minutes between 140 and 180 ° 0 ₉ , depending on the half-life of the peroxide hardener used. When the mass is molded by injection molding

209831/0101 _irMMA1

BATH ORIGINAL

is, and the hardening takes place in situ, temperatures in the order of 200 to 220 ⁰ C are used b @ i correspondingly reduced hardening side «

You composition of the mixture that make up the ball core of the present Invention includes, may contain a filler material that has a can be more active! filler, i.e. » a filler that is both theraolafjilea? Crosslinking agent as well as a filler « If an active filler is used, it may be unnecessary « use an additional crosslinking agent as part of the Filler is effective in this way «, examples for active Püll« substances are zinc oxide and magnesium oxide, while an example of 3ii> essentially inactive filler titanium dioxide is «, the masses, those containing the filler are still thermoplastic »The The amount of filler material is usually from 30 to 70% by weight of the polymer unl depends on the size and weight of the ball that is manufactured shall be. Although most fillers can be used, such fillers are very specific Weight preferred to keep the required load to a minimum su reduce.

The% ll3 can consist of the same mass as the nucleus or be shifted. The shell can consist, for example, of one or more of the following components: balata; trans-Polymerieate conjugated diolefins, s _o B, trans-polyisoprene, trans-polybuta- ΛΙ'-m (vo'fsugaweio ^ nL-% a tranö ^ polymer content of little-

209831/0101

^8AD

Steno 90 f>) i cis-polymers of conjugated diolefins, »„ Β. cis-PoIyisopren, ice-polybutadiene preferably having a cis-polymer content of at least 50 $> \ polyurethanes; Polyamides; Mixed polymers of butadiene and styrene; Polymers and copolymers made from ethylene; Polymers and copolymers made from propylene; Compositions which are described in the German patent specification • «. • ο« »(patent application No. ₀ « «); Copolymers of unsaturated olefins with esters of unsaturated SUu-A ren, bB “Methyimethacrylate / butadiene copolymers, especially those with a high (especially predominantly) methyl methacrylate content; neoprene, especially in crystalline form; Copolymers of ethylene and unsaturated carboxylic acids, 2.B. Ethylene / acrylic acid and ethylene / methacrylic acid mixed polymers If desired, mixtures of two or more substances can be used, e.g. a mixture of cis-polybutadiene and an ethylene / methacrylic acid polymer *

The cover can be made from one or more of the elastomeron materials which are described in British Patent Specification 1 037 091 are described.

The shell composition can contain a filler, B ₀ B ₀ inorganic fillers such as silicon dioxide, bloicarbonate or titanium ionic acid, the latter being particularly suitable for a ball

209831/0101

BATH ORIGINAL

give a white appearance _o

Furthermore, the invention provides a method for fabricating a ball "which is suitable for use as a golf ball" wherein the aforementioned mixture of natural or synthetic rubber with the aforementioned copolymers of at least one olefin and at least one unsaturated carboxylic acid is formed into a ball core and a shell for the ball around the core hemus is shaped "

The method, according to the dl ie sheath is attached to the core ₉ is dependent öes by nature for dis sheath used material _o Where it is a thermoplastic material, it can be applied either by a JOrraEipritzverfahron _f s _o B _e © in Process ₉ at the molten material is pressed around the periphery of the " core, which is centrally fixed in a spherical shape, or it can be used, for example, in Fons sweier hemispherical shells, you encase the core and are adapted to it", which are closed along their united edges and a smooth ©, Form a complete, spherical shell. The latter process can also be applied to a non-thermoplastic casing material »

The means used by imr attaching the sheath to the core

209831/0101

BATH ORIGINAL

are highly dependent on the nature of the shell and core material e Where the shell around the core is manufactured using an injection molding process ₉ , no aids are normally required for fastening, since the shell material, which is still molten, flows in closest contact with the periphery of the core, This leads to a firm connection of the two parts of the ball, "However, where the shell is formed, EB in the compression molding of hemispherical shells, an aid may be necessary to attach it" eg an adhesive "A corresponding aid for fastening is found in mechanical locks, see OB · By shaping the core in such a way that it has catchers or depressions in its surface * to which the shell can firmly attach when it is formed on the core «

As previously mentioned, there are in accordance with the present invention

the
Another golf ball shape in which the core itself consists of two or more! © iles _o This structure is very useful if you want to concentrate on the weight of the ball in the center, although it can also be used under other circumstances d @ r core consist of einerm spherical inner portion or inner core of utageben SWEi or more Außenksrnteilen that susasmen a spherical shell around him form _o If s "B. gwei outer © grains, so they can be in the

caves
Arrangement of / half lragelechals _& the common the inner

209831/0101

Enclose the core and thereby result in a composite structure of spherical shape. The material composition of the inner distance and outer core parts can be the same or different, and one or more of the inner or outer core parts can be a mixture of natural or synthetic rubber and an olefin / unsaturated carboxylic acid micropolymer of the above mentioned type included

The dimensions of the components of a golf ball according to the invention may suitably be the following:

Diameter of the ball

4.11 cm ( _1t 62 inches)

4t27 cm (1 ₉ 68 inchet

Zv; e iccaroonent ball: Core diameter Preferred area Layer thickness of the shell Preferred area

Particularly preferred area

preikom ponenteisball;

Inner core diameter

Ganser core diameter meas Layer thickness of the shell

1 »9-4.06 cm
(0.75-1.6 inches)

2.54-3.92 cm
(1.00-1.54 inches)

0.05-1.1 cm
(0.020-0.435 inch)

0.102-0.79 cm
<0 # 0-0.31Q inch)

0.152-0.318 cm
(0.050-0.125 inch)

0.635-2.54 cm
f0.25-1.00 inch)

1.9-4.05 cm
(0.75-1.60 inches)

like boim Zvreikompone

1.9-4.16 cm (0.75-1.64 inches)

2.54-4 * 06cm (1.00-1.60 ipches)

0 * 05-1.18 cm (0.020- <O, 465 inch)

0.102-0.86 cm (0.040-0.340 inch)

0.152-0.318 cm (0.060-0.125 inch)

0.635-2.54 cm (0.25-1.00 inch)

1.9-4.16 cm (0.75-1.64 inches)

itenball

209831/0101

BATH ORIGINAL

According to a further modification of the invention, a golf ball is created which has an inner core made of steel or glass, ζ · Β, a steel or glass ball. The inner steel or glass core is surrounded by an outer core part or parts that form a spherical shell around it, this outer core part contains Z ₀ B * a mixture of natural or synthetic rubber and an olefin / unsaturated carboxylic acid copolymer of the above mentioned art.

The invention is described in the following examples, in where a 20% (w / w) solution of iriphenylmethane triisocyanate in methylene chloride is used as the adhesive (except Example 10), either in the case of the two-component ball, the core and the shell, or in the case of the two-component ball to glue the inner and outer core components and the core and the shell "

example 1

This example describes the manufacture of a two-component golf ball with a spherical core molded in one piece and a cover "

A spherical core of 3.76 cm (1.48 inch) diameter was formed by molding at 150 ^° C. for 20 minutes from the following ingredients

209831/0101

Composition phone pressed:

Weight parts ethylene / kethaeryl acid- ^ ischpolymerisat 50 c is polybutadiene 50 Lead carbonate 42 Titanium dioxide 4th D icutny lper oxide 3.25

The ethylene / Methaerylsäure-Misöhpolymerisat had a Sehmels "flow index of 0.5 g / 10 minutes (according to British Standard Specification feestiünat 2782 method 103C) and contained 7 wt _o - # methacrylic" Zn 80 $ template in the Pora Batriizsisalses

The CIE Polybtttadien contained 97 i> cis-1 _s 4 ~ Binheiten and had a Mooney Tiskosität (ML-4 @ i b 100 ⁰ C) of 50th

An envelope mass listed in one of a down for 10 minutes at 110 to 120 ⁰ C zn Halfoschalen (Halbkugaln) _s-molded around the adhesive-coated core set and ale & usaiimeng @ - 30 minutes shaped setster ball bsi 160 ° C and then before removal chilled out of the IPora for 10 minutes «

209831/0101

bath

- 1δ -

HtillenEuairmenetsune Weight point Ethylene / methacrylic acid copolymer 52.5 c is polybutadiene 47.5 Lead carbonate 42 Titanium dioxide 4th Dicumyl peroxide 3 _g 25

The finished ball obtained weighed 45.2 g and was generally suspended its cut resistance when playing and its plugging properties • compared to:

A a high quality tournament _{golf ball 9} B a standard practice ball,

C a solid shaped golf ball (i.e. a one-component ball) from a FortaulieruEg «the dex * specified in this example is similar to α

(See Tables 1 and 2 below).

The tournament golf ball was prepared as follows: A center core of rubber paste in a rubber bag with a diameter of 2.66 cm (1 ₈ O5 inch) was wound with a yarn, wherein a core cm with a pressure gauge 3.96-4 "01 ( 1 _Ρ 56 to 1.58 inches) was created. A sheath of trans-polyisoprene composition 0.102 cm (0.040 inch) thick was placed over the

209831/0101

BATH

Molded core, being a sail with a diameter of 4.11 cm (1.620 inches) and a weight of 45.02 g, "

The common Übungoball possessed essentially the rich structure as the tournament ball, with the exception that he cm (1 ₉ £ 5 inches) and a shell had a massive Kautschukkerngentrum of 3.18 of a crystalline Polyohloropronmasse. The ball was 4.10 em (1.618 inches) in diameter and v / og 45.3 g

The egg component golf ball consisted of a similar formulation like that of the core, you used in this example was ο The following abbreviations are used in the results:

SP (b) «Cut resistance of the ball

H a hardness (Shore C)

Rebound " $ rebound from a height of 2.54 m (100 inches)", rebound elasticity "recovery coefficient, determined

by firing a projectile at the ball and noting the time it took to hit the ball and Need a bullet to cover a / predetermined distance.

209831/0101 bad owginal

! Table I.

SF (b)

H rebound

stigidity

Two component ball
of this example see Well 72 Table II Well Air flight,
m (yds) 68 O, 651 27 A. very Well 7a Gi ick Well 206 (225) 60 O, 710 2β | B. Well 70 sc / jr 215 (235) 60 O, 550 Cm "^ K C. s ear Well 70 Eohr Well 160 (175) 67 O, 624 2S4 gvfc 187.5 (205) se5.r Total flight airline
route
m (yda) Two component ball
of this example 221 (242) A. 236 (258) B. 207 (226) C. 210 (230)

"Click" is that by letting you touch the golf club and noise made by the ball.

"Air flight" was the one covered by B.11 before landing Route.

209831/0101

"Total Distance" is the total covered by the ball
Route·

"Airline ¹¹ ** is measured as an arbitrary scale to compare the heights to which the balls rise in flight, with a higher number indicating greater flight altitude.

From the above results it can be seen that the ball does this Example resembles the tournament ball more closely in many ways than the usual practice ball and also the one-component solid ball is superior to a similar composition.

Example 2

This example also describes the fabrication of a two component golf hall with a ball formed from one piece core and a shell.

As in Example 1, a spherical core was formed from a Hasse of the following composition:

Point of action

Ethylene / methacrylic acid copolymer 52.5
c is-Pol ^ butad ien 47.5

Lead carbonate 42

209831/0101

^ß AD OR / G / NAL

Parts by weight Titanium dioxide 4

Dicumy! Peroxide 3.25

Half-shells were made from @ in © r Ilüllen & asee of the following set molded;

Parts by weight

"I - I IJi" op — Approx

EthyleB / iiethacrylGäwre-Misclipolyssrisat 47 »5

cis-Polybutaöieii 52.5

Lead carbonate 42 Titanium dioxide 4

D icumylpero3tyd 5 »2 5

The Xtnylen / iietbacrylB & iire-lüoclipolymsriBat and cis-Polytouta « they were the same as those used in Example 1 «,

A composite ball was made under the same conditions as in Example 1 molded to give a golf ball with a final weight of 45.3 g, this was formed with balls (A) and (B) and with (B) a single component ball of the same composition as the gist of this example compared »The results are in Tables III and IV.

209831/0101

BATH ORIGINAL

! table III

SPibJ H rebound resilience

Two components
ball this case
play very well very good 71 68 0.648 A. Well 70 68 0.710 B. very good 70 60 0.550 D. 70 67 O ₉ 631

Tabel

Click Luftflug total flight plug line m (yds) route m (yda)

Two components"
ball of this example very good 208 (227) 220 (241) 27

A very good 215 (235) 236 (258) 2δ |

B good 160 (175) 206 (226) 21y

D very good 186 (203) 208 (228) ^

From the above results it can be seen that the ball of this example resembles the tournament ball more closely in many respects than the usual exercise ball and also the one-component solid

209831/0101 bathroom original

ball, similar to gusaizgaensatz, is superior

Example 3

This example also describes the fabrication of a two irosiponerite golf ball with a spherical core formed from one piece and a shell.

A spherical core with 3 »76 was about (1.48 inch) diameter by 20 minutes long Pormsn at 150 ° C from the following Mass © formgepreßts

Parts by weight

Ethylene / methacrylic acid copolymer 50 ice polybutadiene 50

Bl @ icarbonate 70

Titanium dioate 5

Dicuaylperosyd 3.25

Ethylene / methacrylic acid micropolyers and cis-polybutadiene were the same as used in Example 1 · half-shells 0.178 cm (0 ^ (370 inches) thick with an inside diameter of 3.76 cm (1.48 inches) were made from ethylene / teeth acrylic acid copolymer at 200 at 210 ° C injection-molded, placed around the core above soaked with adhesive, then the ball structure was turned into

209831/0101

a dimpled shape of 4.19 cd (1.65 inch) By Tresser 5 Hinuten at 160 ⁰ C, and then molded before removing 15 Hinuten long-cooled, so erhalten® The finished ball weighed 45 »8 g and was the Balls A, B and C, as in Example 1, compared. The results are given in the table below

Sff (b) H rebound rebound resistance

Two component components this example is very good 89 64 0.583

Click Luftflug Gesaratflug Fluglinie jt d) , m (yds)

Two component ball this example good '87 (205) 230 (252)

Example 4

SESESESSSE

The example also describes how to make a Two-component golf @ suit @inem molded from one piece spherical core and a shell.

A 1.76 cm (1 "48") spherical core was made as in Example 3 made ο The TOrt / en & © te Hasse was the same as in example 3, with the exception that this time 65 ropes of lead

209831/0101

- 24 carboraat instead of the 70 columns of example 3 vörh & adiia were

Half-shells similar to those of Example 5 were "at 190 to 200 ⁰ C forsigeapritst mus © insr? 5/25 mixture of Ithy-Ien / i5etnaeryleäu3? E- ^ 5ischpolymerisat and ois-polybutadiene, the duroli Weiehsjacnsa ia fesseiia. Bajafc" 14O ⁰ O lait ß © nder Granuli®rasg der kältet Hasse laer created vrar _o finished ball _c © it @ ia © sa weight of 46 g _s was geiaäß example. ©! 5 produced imä the Ergefeeieae was ^ isii with the balls A ₉ B tml 0 dee Bsiopioles 1 TesglioheCo iT successor are listed below:

._Sglb) ___, H rebound

2v; e ikemponent en »
ball of this example very good 75 59 O _? 552

Olick Iiuftfliig overall flight

ball of this example very good 182 (199) 223 (248) 19

Example 5

This example also be & chrdlbt ate producing a Zi * eikoraponest © agolfbslle3 Kit eiriöia from a Stüc% g

209831/0101

BAD OBIGWAL

spherical core and a shell.

A 3.76 cm (1.48 inch) spherical core was similar to Manufactured in example 3 'you hate was the same as in Example 3, with the exception that 55 ropes of lead carbonate were used instead of the 70 parts of Example 3

Half-shells similar to that of Example 3 were made from a 25/75 mixture of granulated acrylonitrile / butadiene / styrene polymer (known as "Cyeolae H", supplied by Karbon Chemicals) and thermoplastic polyurethane {known as "itain 192", mixed in a drum mixer / A * supplied by Monsanto Chemicals Limited) at 190 to 200 ⁰ O fortsgespritat "the finished ball weighed 46.2 g and was prepared as in example 3 _9, the results were compared with dec balls A, B w ä g of example 1 The results are given below:

SP (b) H rebound, rear elasticity

Two-component ball

this example is good 7? 59 Q _S 5B2,

Click fcuftflug Ctesamtflng i ^ l U§)

Two-component ball

of this example very good 195 (211> S2I (242}

209831/0101

"26 Example 6

SS8S3SSS5S

This example also describes the production of a two-component ball with a spherical core and a shell formed from one piece.

A 3.76 cm (1.48 inch) spherical core was made as in Example 3 romped here.

Half-shells with the same dimensions as those in Example 3 were made from a polyethylene homopolyraerisate (density ₉ 92 g / c® ₉ Scfimslsströmindcx 20 g / 10 minutes ^ beetiEsmt each British Standard Specification 2782, Hethoäe 1050) to 200 bio 220 ⁰ O injection-molded The finished ball weighed 45.3 g and was produced as in Example 5. The results were compared with balls A, B and 0 of Example 1. The results. = © Bind given below.

SP (b) H rebound rebound

sticity

Two-component ball

this example good 78 *>? O ₉ 55t

209831/0101 _B AD ORIGINAL

Click Ituftflug total flight airline

(ä) Cä)

Protein component

ΐ>& 11 this B © i- _q

Played very well 186 (203) £ 25 (246) 19g

Example?

This example describes how Bbenfslls make a kemponentengolfballs With egg molded from one piece ! igen core imd eiü ^ r- Hüll®.

A similar ball was produced as in Example 6 ₉ but the H & Xbsch! Il @ ii äei "envelope © x ^ ir take on an ethylene / vinyl acetate

He.i «SO to 200 ⁰ C £ onagespritst _o beta ethylene / risat had a melt flow index of 2.5 g / 10 minutes, bea-tlmert mach BS ₀ 2782 _y method 105C ₅ and possessed @ is © a TinylacetatgeMlt of 18 $ _a

The finished ball weighed 45.6 g and was made with balls A, B and C. dss Example 1 compared *, The results are below

H rebound rebound resilience

t & fc

Ewe ikomponentenliall thick Bsis-piele good 62 59 0.563

209831/0101

BATH ORIGINAL

Click

Loft flight
m (yde)

Total flight m (yds)

Plug line

Two-component ball of this example

very good

209 (228)

Example 8

This example also describes the production of a ZWe i ~ Kosiponentengolfballes ait a ball formed from one piece with a core and a shell *

A spherical Xero as in Example 4 was produced

wi "In Example 3 auo Thermoplaßtllc 201 thermoplastisciiee block HischpolyEserisat sub styrene butadiene nnä from Shell Chemical Company) at 170 to 180 ⁰ G were foESägespritst. A finished ball weighed 45 * 8 g and was made as in Example 3 , but using a temperature of 150% $ s & ™. Forms, He was then compared with the balls A "B and G of the game 1" The results are given below,

Fire bounce

Rebound a t is did

Sweikoraponentenb & ll this example pretty much 61

Well

0.565

209831/0101

BATH ORIGINAL,

Click Luftflug öesamtflug airline

η (yds) m (yds)

Two-component ball

this example good 175 (191) 204 (225) 20

Example 9

This example describes the production of a M @ & rkomponen ~ tangolfball, consisting of a shell® and a multi-component core, the core of an inner spherical core, surrounded by two ring-shaped half-shells. A spherical core of 2 "54 cm (1" 0 inch) diameter fonegepreßt for 20 minutes by long molding at 150 ⁰ C in the following composition *

wt maybe parts

Xthylene / methacrylic acid-Mi acäpolyit

50

cis polybutadiec 50

Lead carbonate 48

Xitsiide dioxide 2

Dicumyl peroxide 3 * 25

The EthyleD / Methnorylsaure-Mischpolyroerisat and the cie-Polybatndien vmr © n the same "that was used in example 1" Ring-shaped half-rounds with a lumendurehis eater of 2.54 cm

209831/0101

BATH

(1.0 inch) and an outer diameter of 3 »76 cm (1.48 inch), using again the same C © polymer and the same cis-polytmtadiene, were sprayed from the following Hass © at 100 ⁰ C:

Weight parts

Ethyleia / methacrylic acid mixed poly

soerisat 50

cin-polybutadiene 50

Lead carbonate 35

Titanium dioxide 4

Dicuroyl peroxide 3.25

The spherical core was coated with an adhesive and the ring-shaped half-bells were attached around it

Sheath half-shells, which had been prepared as in Example 5 were then attached to the multiple structure around, and the whole was fonagepreßt in a dimpled shape 20 Hinuten at 150 ⁰ C and then cooled for 15 Hinuten before removal " The resulting ball weighed 46.0 g and was compared with 1 @ n balls A, B tsnö C of Example 1. The results are given below.

209831/0101

SF (b)

IlÜekprall

Rebound resilience

Yler component ball this one

For example, selir well

77

60

0.590

Click

Air flight Cfl)

Gesa & tflug Elugllni © (d)

Tierkempooentenliall of this example B & hT good

187 (205)

216 (236)

Example 10

Example includes the production of multi-component golf bailee, consisting of a shell and a melmcomponent core, the core consisting of a ball which is surrounded by two inner ring-shaped half-axles and the inner ring-shaped half-clials on the other hand again by two outer, rear-facing halves are to be given «,

The inner ringfÖ2? Saigsn ifelbsclialeii with an interior acid cbm © ss @ r of Ο _? 6; 55 eai (0.250 insh) uud eissm outer sureme knife of 2.54 ca (1.0 inch) were formed from the following mass at 90 ° 0

209831/0101

45

eio polybutadiene 55

BIe! Carbon »t 38

It is made from the same ethylene / ethaoryl acid copolymer as used in example 1 «

Outer annular © HaIbsehalen IAIT a Xnnendurchiae0s © r you j 7. 54 cia (1 _s 0 iaeh) mad © i ^ sna & ιιΒ @ 2? @ Ώ diameter VOA 3 »76 cm (1.48 inch) were in the same way £ but orBsg © presses _s using the following mass _β , again using the same and the same ciss-polybutene & diene

Parts by weight Ethylene / methacrylic acid mispolymerate 50 c is-Polybutfödi © a 50 Lead carbonate 25th Titanium dioxide 4th Dicumyl peroxide 3.25

Shell half-shells were used as in Example 4 “but under Use of a 5O / 5O-HiECl2ung öeo the same ethylene / & ethaeryl-

209831/0101

BATH ORIGINAL

Acid-Misschpolymerisates and cis-polybutadiene, as it was used in Example 1, ^{injection-molded at 100 0} C, a measure £ 3 © mixed in an IroBitaeliaiseher with 3 # Dieumylpxyd was used.

inner annular Halhsch were & len a ball bearing with a rich, rough surface 216 adhesive (from Hughson Chemical Corporation) About Absorbed was with a layer Chemlock, heruü attached, the structure was in a form with a smooth surface at 9O ⁰ O forasgepr © St ₈ to plasticize the structure shown below, was then cooled before removal © "outer annular H®lbschal © n were then attached to the inner core heruei _v and the assembly was formg in a different form with a smooth surface at 90 ⁰ C © pr © et _e Then the shell half-shells were attached, mid the whole ball was hardened for 30 minutes at 160 ⁰ C, before the? Ataa removal of the mold was allowed to cool for 15 minutes.

The resulting ball weighed 45.8 g and was with balls A, B and C of Example 1 compared. The results obtained are listed below:

S? (B) H rebound rebound & llelaetiei

. did

The component ball of this example is very good 70 64 0.625

209831/0101

Click air flight total flight

m (yds) m (yds)

Four-component ball this example very good 185 (200) 208 (228)

2Q9 & 31 / 01Q1

BATH ORIGINAL

Claims (1)

Claims .Lambda..sub.i game ball having a core surrounded by a sheath, characterized in that the core ntliält a blend of natural rubber or a synthetic rubber with a copolymer of at least one olefin and at least one hereby aiBChpolpierisierbaren unsaturated carboxylic acid © _p said interpolymer unsaturated carboxylic acid ^ in an amount of 2 to 40 wt .- $ of the copolymer and is present in the Hiacfeung in an amount of 5 to 95 wt .- # of the mixture, 2 »game ball according to claim 1, characterized in that the Cue ball is a golf ball «, 3 «game ball according to claim 1 and 2, characterized in that that the core is formed from one piece " 4 «game ball according to claim 1, 2 and 3, characterized in that that the shell contains the same mixture as the core. 5. Game ball according to one of the preceding claims, characterized in that ät & s Poliuerisat © in arbitrary mixed po- 209831/0101 lymerisat is (random copolymers in which the molecular chains the olefin and the unsaturated carboxylic acid in more arbitrary Arrangement polymerized 6. Match Ba characterized according to one of claims 1 to 4, "that the copolymer is a Pfropfmischpolyiieriß & T with a £ £ @ olyol inhmuptkette and? Olycarhonsäur @ Bweigen ₀ 7 · plaything g © Naess to claim ₉ characterized in _t dAb, the olefin is ethylene · 8 · a plaything genäB, characterized in that the unsaturated carboxylic acid _f Sat © © in MONOC & rbomsäure the preceding claims. 9. game ball according to one of claims 1 to 7, characterized * that the unsaturated © carboxylic acid is a dicarboxylic acid. 10. game ball ge ^ äß one of the preceding claims ,, thereby characterized in that the Hischpolymerieat thermolabile Ternetgungen contains «, 11. game ball according to claim 10, characterized in that 20 9831/0101 - ■ 37 ν:. eia Serpolys & eris & t of an olefin, one iand © ines metal salt © of an unsaturated carbonic acid «. ■ - l '! o game ball g © saäß claim 11 _β thereby k © nneelehnet ₉ that e & a metal f-feie 4-door? 12 ₈ dafliaroh gelietiageichnet _β that miss Me-feall Hatfflwa mlms ΚΙϊϊΙπ Is «". 14 ο Spieltoall "according to Αμπιαέ ^ Ιι Hl ₉ dadnrch. G ©) r © naseiohn © t ₉ - that ü & 8 Metall in eiaör Meag © ^ © a wsnigbteias 10 ^ &<& b Äteß iii @ r Oartoiiaäiar © httöri is «, -3 Splelfeall-geiüfiß ü @ n vöriiergehsßden Aaspa? Tlcti © n, classt d * as tier tjyathetiscte Kantschult T'6o, played ßwaiäB claim Ϊ5 ₉ öaduroh vgefeennselehnet ₈ that «'tie Himßhung © i: * i (Jetiaiaßli from cis ^ Folyhutstdien,. Natural ! /. 'ißat, in which the set © in ileminch with i% TürlioiieMjüiratiu> huk ^ / "jiftlgFj feoiiii 50 (}'!" fi * ^J / j des ß.jjöaKitg © wiclitt9 £ i ties "is 2 0 9831/0101 17o game ball according to previous claims _9, characterized in that the mixture is hardened 18 ο match ball g <aia! IS © ln @ m des? preceding claims _f) characterized gökennaelehnet _e that oil © ZueanaaenBotauiig suefttBlloh © © in n active 3? ülletof £ uyfaßtg with eggs as tfcCTraol & bilen Vernstauugo · »ϊ-iittel acts ο 19 "Spielball g @ tallß AßiipjL ^; u & h 1O ₃ In wül.ahexi d« ir aktiv® filler or Hagn © «IwEßOsyß Luiij 20. Proceed »@wr Hrtcb ifelliiEß Ölsi-aa Baileö» i / Ha Golflnall gööigsvafc let, wobnl viia Κοκ ¹ »g föa d« n core . «Iriss d.oi? Kern-awtJ © liier Maoöe wLrd, consisting of a mixture of imc; ürllisii £ iJ rubber ούαν an Ieutschuk with einiSi Mtschpol ^ merisal; mm at least © in ^ m olefin and at least one ©! ¹ hien? Itb Lii.rs ^ hpol ^ meriobaren iingöiillt; tig '% en Garbonslluie ^ vots -? - i. Uwß tiJÄfihpvi'.lyE-AuriBat the unsaturated carboxylic & ure In ώ.Ιώγ; -; · Mov ^ '- ^Vim ^ ¹ ^ -'- ^ 40 ßew _o ™ # d (5S p-olyjaerisateo eutMlfc and. \ N üpa' lllpMmng in some amount ^r i kl.i Wj ^ . ¹ J ₄ VurtuhXTfm ^ itilii ^ bi-i ^ ai. h ^ u, ^ iiduxoh know »« glue !!;,. 2 0 9 8 3 1/0101 BATH ORIGINAL the mass is produced by mixing the natural or synthetic rubber with the copolymer at a temperature which is 30 to 50 ^° C. above the melting point of the copolymer. 22, Method acc claim 21, characterized in that the mass is cooled to 90 to 120 ⁰ C, before mixing the mass with the hardeners ₀ 23. The method according to claim 20, 21 and 22, characterized in that the mass is formed by compression molding for 20 to 6Q ™ minutes at a temperature of 140 to 180 ⁰ O on a ball core. 2Q9831 / Q101 BATH ORIGINAL