US3786011A - Polyvinyl chloride resin composition closely simulating a grass playing surface in its bounce characteristics - Google Patents

Polyvinyl chloride resin composition closely simulating a grass playing surface in its bounce characteristics Download PDF

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Publication number
US3786011A
US3786011A US00149002A US3786011DA US3786011A US 3786011 A US3786011 A US 3786011A US 00149002 A US00149002 A US 00149002A US 3786011D A US3786011D A US 3786011DA US 3786011 A US3786011 A US 3786011A
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US
United States
Prior art keywords
polyvinyl chloride
pitch
field
synthetic
rubber
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.)
Expired - Lifetime
Application number
US00149002A
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English (en)
Inventor
D Price
R Moore
R Sidebottom
M Briscoe
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Coal Industry Patents Ltd
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Coal Industry Patents Ltd
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Publication date
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Application granted granted Critical
Publication of US3786011A publication Critical patent/US3786011A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
    • E01C13/04—Pavings made of prefabricated single units
    • E01C13/045—Pavings made of prefabricated single units the prefabricated single units consisting of or including bitumen, rubber or plastics
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/10—Esters; Ether-esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L11/00—Compositions of homopolymers or copolymers of chloroprene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08L9/02—Copolymers with acrylonitrile
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08L9/06—Copolymers with styrene

Definitions

  • a synthetic pitch or field for cricket, tennis, and like ball games is provided, which, in contrast to previous proposed pitches, closely simulates grass, particularly in its bounce characteristics, especially for spinning balls.
  • the synthetic pitch or field contains 25% to 75% of plasticized polyvinyl chloride material, to 20% of a finely divided fibrous material, 0% to 20% of a natural or synthetic rubber, preferably a nitrile rubber, and to 60% of a finely divided, preferably low density filler, for example chalk and clay, and may also contain a green pigment.
  • the invention relates to improvements in or relating to synthetic pitches or fields for cricket, tennis and like ball 1games and to methods of manufacturing such pitches or elds.
  • Synthetic pitches or fields have been made from various materials, particularly woven and non-woven fibrous materials. These materials have been found suitable for games in which the bounce of the ball is relatively unimportant. Such surfaces used hitherto have not always proved entirely suitable, and not having, in many cases, bounce characteristics, particularly in relation to spinning balls, sufficiently close to that of natural grass. In other cases solid materials have been employed, for example wood, but such materials is only satisfactory, on the ground of expense, for games in which there is relatively small pitch or field, for example tennis. Such solid materials also have the disadvantage that the bounce characteristics are not always sufficiently close to that of grass. For these reasons, such surfaces as have been generally employed hitherto have not proved entirely satisfactory for winter practice in preparation for summer activities.
  • the balls tend to bounce on a relatively small area of the pitch or field, which small area tends to wear, while the remainder of the surface of the pitch or field is relatively unworn.
  • the pitch or field then would need to be discarded, while the majority of the surface thereof would still be useable.
  • the present invention provides a pitch or field which has bounce characteristics closer to that of natural grass than those pitches or fields of an equivalent cost hitherto employed, particularly in relation to the bounce characteristics of spinning balls and for fast and medium bowling in cricket.
  • the pitch or field of the present invention may easily be made in parts which can be interchanged so that the whole area of the pitch or field can be made to wear evenly, and the pitch or field can be removed for temporary storage.
  • the pitches or fields of the present invention do not normally need to be bonded to the surface on which they are placed but can be placed on a fiat surface. They have the further advantage that they require no maintenance.
  • pitches or fields In use, the pitches or fields remain true, with no bad bounces, and do not normally reflect light to such an extent that gives rise to an unacceptable amount of glare.
  • the pitches or fields are resilient and certain types of boots or shoes with studs can be worn without causing serious damage.
  • the invention comprises a synthetic pitch or field for cricket, tennis and like ball games containing 25% to of plasticized polyvinyl chloride, 5% to 20% of a finely divided fibrous material, 0% to 20% of a natural or synthetic rubber compatible with the plasticized polyvinyl chloride, and 10% to 60% of a finely divided particulate filler, all parts being by weight of the total weight of the composition.
  • Any conventional polyvinyl chloride may be employed in the present invention.
  • Copolymers of vinyl chloride with other monomers which copolymers have physical properties similar to that of conventional polyvinyl chloride, and desirably contain at least 70 mole percent, preferably at least mole percent, of vinyl chloride monomer, may also be employed. Mixtures of the copolymers with homopolymer may be employed. Suitable comonomers that may be employed include vinylidene dichloride and vinyl acetate.
  • plasticizers for polyvinyl chloride may be employed to plasticize the polyvinyl chloride.
  • suitable plasticizers include was conventional, preferably liquid, ester plasticizers, including the diesters of aliphatic and aromatic dicarboxylic acids, for example the phtha'lic acids, succinic acid, adipic acid, azelic acid, suberic acid, sebacic acid and homologues thereof and mixtures of such acids.
  • the esters may be of aromatic alcohols, or of straight or branched chain alkanols, for example butanol, 2-ethylhexanol, 3,5,5-trimethylhexanol, heptanol, decanol, dodecanol, various branched and straight chain tridecanols and benzyl alcohol.
  • Other types of plasticizers that may be employed include the alkyl phosphates, particularly the trialkyl and triaryl phosphates.
  • Low molecular weight substantially straight chain polymers may also be employed, for example polyesters having molecular weights of between about 700 and about 2000, derivable, for example, from the reaction of dicarboxylic acids with diols.
  • Suitable dicarboxylic acids in-- clude those listed above; suitable diols include ethylene glycol, propylene glycol, butan-1,4-diol, butan-2,3-diol and 2,2-dimethylpropan-l,B-diol.
  • Suitable polyester plasticizers include also those derivable by the reaction of a monohydroxymonocarboxylic acid, for example 6-hydroxycaproic acid.
  • Polymeric esters are preferably terminated by a nonreactive group, for example by the introduction of a monohydroxyalcohol.
  • plasticizer include epoxidized esters for example oleate esters and soya bean oil, and those based on trimellitic acid or on pentaerythritol.
  • plasticizers examples include di-n-butyl phthalate, di-Z-ethylhexyl terephthalate, di-iso-octyl phthalate, didodecyl phthalate, butyl benzyl phthalate, di-iso-butyl adipate, di-n-octyl sebacate, the diazelate of mixed straight chain cuts of C to C alkanols, butylene phthalate polyester, ethylene terephthalate polyester, propylene adipate polyester, polycaprolactone, epoxidized octyl oleate, and trixylyl phosphate.
  • any convenient ratio of plasticizers to polyvinyl chloride may be employed in order to ensure that, under the conditions under which it is proposed to use the pitch or field, the pitch or field will be sufliciently flexible.
  • a proportion of less than 2 parts polyvinyl chloride to 1 part of plasticizer will often be convenient, and a ratio of about 1 is preferred.
  • any suitable fibre may be employed in the present invention.
  • suitable fibres are, in general, organic fibres, either natural or synthetic, for example cotton, cellulose, polyamide and polyester fibres.
  • finely divided fibrous material it is meant that the fibres should desirably have a length of less than about 15 mm. and preferably less than 10 mm. It will be understood, however, that a portion of the fibres, preferably less than 25%, may be longer than mm., but such a portion are Preferably shorter than about 25 mm.
  • the fibres may be compounded in a mixture with the polyvinyl chloride material, as, for example, is the case if the source of the fibres is shredded or comminuted conveyor belting or oil-cloth or the like, or the fibres may be added separately, for example as a floc.
  • any finely divided particulate filler may be employed for the pitches or fields of the present invention, but it is preferred to use fillers having a relatively low density, for example finely divided chalk, clay and like minerals. Desirably the quantity of filler employer is less than 50% and a preferred quantity of filler is between and 40% by weight.
  • Any natural or synthetic rubber may be employed in the present invention, provided that it is compatible with the polyvinyl chloride material in the quantity employed.
  • Suitable rubbers include chloroprene rubbers, isoprene rubbers, buna rubbers, styrene-butadiene rubbers, ethyl one-propylene rubbers, acrylonitrile-butadiene-styrene rubbers and chlorosulphonated polyethylene rubbers.
  • Preferred rubbers are nitrile rubbers which are copolymers of acrylonitrile with butadiene or isoprene or similar dienes. It is believed that the amount and nature of the bounce obtained will vary with the amount of the rubber present and the type of rubber present. Accordingly, the amount and type of rubber may be varied in order more accurately to reproduce the bounce characteristics of the grass surface it is intended to simulate.
  • a preferred amount of rubber is between 3% to 10%.
  • the synthetic pitch or field may contain a pigment, preferably green to simulate grass.
  • the synthetic pitch or field may contain conventional lubricants, stabilizers and processing aids.
  • the pitch or field may be compounded by mixing the constituents in a conventional way at an elevated temperature, for example between about 120 C. and 160 C., in a Banbury mixer.
  • the pitch or field may then be formed by extrusion through a roller die to produce a smooth synthetic pitch or field.
  • the pitch or field may be compression moulded.
  • the synthetic pitch or field may, advantageously, be of such a thickness that it can be cut into pieces, the edges of which can abut one another so that, when lying on a smooth surface, a smooth pitch or field is formed.
  • the individual pieces may be interchanged in order, as described, to facilitate the even wear of the pitch or field.
  • a suitable thickness of the synthetic pitch or field is between 2 mm. and 15 mm, about 5 mm. being preferred.
  • Typical compositions for synthetic pitches or fields are set out in Tables 1 to 5 below.
  • the pitch or field may be manufactured by compounding the constituents in a Banbury mixer at a suitable temperature so that a homogeneous mixture is formed.
  • the homogeneous mixture may be extruded through a roller die to form a sheet. Testing is carried out empirically.
  • composition of claim 2 wherein the comonomer is vinylidene chloride or vinyl acetate.
  • composition of claim 1 wherein the polyvinyl chloride material is plasticized with a liquid ester plasticizer.
  • composition of claim 6 wherein the ester is a substantially straight chain polyester having a molecular weight of between about 700 and about 2000.
  • composition of claim 1 wherein the filler is chalk or clay.
  • composition of claim 13 wherein the finely divided fibrous material comprises fibers having a mean length of less than about 15 mm.
  • composition of claim 15 wherein the organic fibrous material is cotton cellulose polyester or polyamide.
  • composition of claim 1 including also a green pigment.
  • composition of claim 17 comprising:

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
US00149002A 1970-06-12 1971-06-01 Polyvinyl chloride resin composition closely simulating a grass playing surface in its bounce characteristics Expired - Lifetime US3786011A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2860670A GB1338396A (en) 1970-06-12 1970-06-12 Synthetic pitches or fields for ball games

Publications (1)

Publication Number Publication Date
US3786011A true US3786011A (en) 1974-01-15

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ID=10278281

Family Applications (1)

Application Number Title Priority Date Filing Date
US00149002A Expired - Lifetime US3786011A (en) 1970-06-12 1971-06-01 Polyvinyl chloride resin composition closely simulating a grass playing surface in its bounce characteristics

Country Status (7)

Country Link
US (1) US3786011A (enExample)
CA (1) CA983633A (enExample)
DE (1) DE2129028A1 (enExample)
FR (1) FR2095212B1 (enExample)
GB (1) GB1338396A (enExample)
NL (1) NL7108060A (enExample)
ZA (1) ZA713239B (enExample)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943097A (en) * 1972-08-17 1976-03-09 Mitsubishi Monsanto Chemical Company Polyvinyl chloride compositions containing trixylyl phospate and a second plasticizer
US4111888A (en) * 1970-10-27 1978-09-05 Ciba Geigy Ag Plasticized polymers of vinyl acetate
US4122057A (en) * 1974-09-03 1978-10-24 Emery Industries, Inc. Mixed-terminated polyester plasticizers
US4130533A (en) * 1974-01-18 1978-12-19 Ciba-Geigy Ag Polyester plasticizers
US4130532A (en) * 1974-08-21 1978-12-19 Ciba-Geigy Ag Polyester plasticizers
US4132696A (en) * 1974-03-28 1979-01-02 Ciba-Geigy Ag Polyester plasticizers
US4133794A (en) * 1974-08-22 1979-01-09 Ciba-Geigy Ag Polyester plasticizers
US4161465A (en) * 1977-07-18 1979-07-17 Industrial Technology Research Institute PVC red-mud compositions
US4324710A (en) * 1980-10-02 1982-04-13 The Firestone Tire & Rubber Company Naturally occurring thermoplastic resins as a substitute for various petroleum-derived materials in rubber stocks
US4335033A (en) * 1978-08-25 1982-06-15 J. S. Staedtler Eraser and process for its manufacture
US4601925A (en) * 1984-10-18 1986-07-22 Hsu Samuel K Race track cushioning surface
US4648592A (en) * 1984-06-28 1987-03-10 Atsushi Harinishi Gymnastic floor structure having vertical elasticity
WO2010049528A1 (en) * 2008-10-31 2010-05-06 Tessenderlo Chemie N.V./S.A. Method for the preparation of pre-reinforced and reinforced pvc polymers and devices thereof
US20110204543A1 (en) * 2008-10-31 2011-08-25 Tessenderlo Chemie N.V./S.A. Method for the preparation of pre-reinforced and reinforced PVC polymers and devices thereof
EP2375118A1 (en) * 2010-04-08 2011-10-12 Fitt Spa Use of a thermoplastic PVC compound with vegetables fillers for manufacturing flexible hoses and method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100025370A1 (it) * 2021-10-04 2023-04-04 Acbc S R L Gomma modificata con fibre naturali e metodi per ottenerla

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1209035A (en) * 1967-04-27 1970-10-14 Dunlop Semtex Ltd Surface covering compositions

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111888A (en) * 1970-10-27 1978-09-05 Ciba Geigy Ag Plasticized polymers of vinyl acetate
US3943097A (en) * 1972-08-17 1976-03-09 Mitsubishi Monsanto Chemical Company Polyvinyl chloride compositions containing trixylyl phospate and a second plasticizer
US4130533A (en) * 1974-01-18 1978-12-19 Ciba-Geigy Ag Polyester plasticizers
US4132696A (en) * 1974-03-28 1979-01-02 Ciba-Geigy Ag Polyester plasticizers
US4130532A (en) * 1974-08-21 1978-12-19 Ciba-Geigy Ag Polyester plasticizers
US4133794A (en) * 1974-08-22 1979-01-09 Ciba-Geigy Ag Polyester plasticizers
US4122057A (en) * 1974-09-03 1978-10-24 Emery Industries, Inc. Mixed-terminated polyester plasticizers
US4161465A (en) * 1977-07-18 1979-07-17 Industrial Technology Research Institute PVC red-mud compositions
US4393022A (en) * 1978-08-25 1983-07-12 J. S. Staedtler Eraser and process for its manufacture
US4335033A (en) * 1978-08-25 1982-06-15 J. S. Staedtler Eraser and process for its manufacture
US4324710A (en) * 1980-10-02 1982-04-13 The Firestone Tire & Rubber Company Naturally occurring thermoplastic resins as a substitute for various petroleum-derived materials in rubber stocks
US4648592A (en) * 1984-06-28 1987-03-10 Atsushi Harinishi Gymnastic floor structure having vertical elasticity
US4601925A (en) * 1984-10-18 1986-07-22 Hsu Samuel K Race track cushioning surface
WO2010049528A1 (en) * 2008-10-31 2010-05-06 Tessenderlo Chemie N.V./S.A. Method for the preparation of pre-reinforced and reinforced pvc polymers and devices thereof
BE1018319A3 (nl) * 2008-10-31 2010-08-03 Tessenderlo Chemie N V S A Werkwijze voor de vervaardiging van pre-versterkte en versterkte pvc polymeren en inrichtingen daarvan.
BE1018452A3 (nl) * 2008-10-31 2010-12-07 Tessenderlo Chemie N V S A Werkwijze voor de vervaardiging van pre-versterkte en versterkte pvc polymeren en inrichtingen daarvan.
US20110204543A1 (en) * 2008-10-31 2011-08-25 Tessenderlo Chemie N.V./S.A. Method for the preparation of pre-reinforced and reinforced PVC polymers and devices thereof
EP2375118A1 (en) * 2010-04-08 2011-10-12 Fitt Spa Use of a thermoplastic PVC compound with vegetables fillers for manufacturing flexible hoses and method thereof
WO2011125008A1 (en) 2010-04-08 2011-10-13 Fitt S.P.A. Eco-friendly plasticized pvc compound and its use for manufacturing a flexible hose

Also Published As

Publication number Publication date
NL7108060A (enExample) 1971-12-14
ZA713239B (en) 1972-01-26
FR2095212B1 (enExample) 1975-08-22
FR2095212A1 (enExample) 1972-02-11
DE2129028A1 (de) 1971-12-16
GB1338396A (en) 1973-11-21
CA983633A (en) 1976-02-10

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