CN101296635A - Oral care implement comprising an elastomeric polypropylene-ethylene copolymer - Google Patents

Oral care implement comprising an elastomeric polypropylene-ethylene copolymer Download PDF

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Publication number
CN101296635A
CN101296635A CNA2006800354368A CN200680035436A CN101296635A CN 101296635 A CN101296635 A CN 101296635A CN A2006800354368 A CNA2006800354368 A CN A2006800354368A CN 200680035436 A CN200680035436 A CN 200680035436A CN 101296635 A CN101296635 A CN 101296635A
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China
Prior art keywords
oral care
copolymer
care implement
brush
elastomer
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Pending
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CNA2006800354368A
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Chinese (zh)
Inventor
黄志诚
M·C·罗尼
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Colgate Palmolive Co
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Colgate Palmolive Co
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Publication of CN101296635A publication Critical patent/CN101296635A/en
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    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0055—Brushes combined with other articles normally separate from the brushing process, e.g. combs, razors, mirrors
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0055—Brushes combined with other articles normally separate from the brushing process, e.g. combs, razors, mirrors
    • A46B15/0069—Brushes fitted with a interdental devices, e.g. toothpick
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0055—Brushes combined with other articles normally separate from the brushing process, e.g. combs, razors, mirrors
    • A46B15/0081—Brushes with a scraper, e.g. tongue scraper
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/002—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions
    • A46B5/0025—Brushes with elastically deformable heads that change shape during use
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/02—Brush bodies; Handles integral with brushware specially shaped for holding by the hand
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/02—Brush bodies; Handles integral with brushware specially shaped for holding by the hand
    • A46B5/026—Grips or handles having a nonslip section
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures

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  • Brushes (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Materials For Medical Uses (AREA)

Abstract

An oral care implement has one or more components, such as a handle or a gripping portion thereof, prepared from an elastomeric propylene-ethylene copolymer. The elastomeric copolymer provides a comfortable and non-slippery gripping surface in a variety of conditions, including both wet and dry environments, and also provides flexible characteristics which are particularly well suited for hinged handle designs.

Description

The oral care implement that comprises elastomeric polypropylene-ethylene copolymer
Technical field
The present invention is directed to a kind of oral care implement and more particularly, at comprising the oral care implement that has by one or more parts of elastomeric propylene-ethylene copolymer structure.
Background of invention
Oral care implement, particularly tooth-brush handle, traditionally by rigid material such as polypropylene, polystyrene, polyethylene, acrylonitritrile-styrene resin, or cellulose acetate propionate manufacturing.By the tooth-brush handle of such constructed of rigid materials hold uncomfortable and in the process of brushing teeth, be difficult to the operation.In addition, the easy landing that becomes under the wet condition that rigid handle is often run in the process of brushing teeth.
Proposed a kind of method, molded on rigid handle (overmold) elastomer is to improve comfortableness and to make the processing ease of brushing teeth.For example, authorize the US2004/0025272 of Stvartak etc., be incorporated into here as a reference, disclose a kind of toothbrush with brush holder, wherein brush holder is by rigid foundation composition (base member), such as polypropylene or polyethylene structure, use the elastomer molded, described elastomer is such as carbamate, styrene/ethylene/butylene-styrene elastomer, metallocene elastomer, for example, and Engage
Figure A20068003543600041
(a kind of polyolefin that can obtain from DuPont Dow Elastomers), or in the continuous matrix of polypropylene the ethylene-propylene-divinylic monomer of complete cure.But these elastomers are often more expensive, significantly increase the toothbrush manufacturing cost.
Flexible material also has been used for the part of tooth-brush handle, and it increases user's comfort by the brush teeth dynamics that acts on tooth and gum in the process of restriction.For example, authorize the US2004/0128780 of Chan, be incorporated herein by reference, a kind of electric toothbrush with flexible neck has been described, wherein neck is by first polymer, such as polypropylene with have than second mixture of polymers of the lower bending modulus of first polymer and make.Second polymer can be thermoplastic elastomer (TPE) (" TPE "), thermoplastic olefin (" TPO "), and soft TPO, or other elastomeric material is such as ethylene-vinyl acetate copolymer or EP rubbers.
The alternative material that still needs the structural member of oral care implement, particularly those costs effectively also provide simultaneously such as non-sliding clamping face, strengthen the material of tactile feel and user's comfort.
Summary of the invention
The present invention is directed to a kind of oral care implement, it has one or more by elastomeric propylene-ethylene copolymer, preferably has to be lower than about 80 Xiao A hardness, the parts of structure.The parts that such elastomer can be used for constructing comprise, but be not limited to brush holder, or its retained part, toothpick section, brushhead or its part, bristle portion, tongue cleaning element, elastomer cleaning of teeth element, and/or (holding) portion of storage, for example, the capsule that is used to disperse the sack of spices or produces fragrance.Such elastomer available heat plastic material is such as polypropylene molded or injection-molded, to form brush holder or other parts of oral care implement.
When being used for the brush holder part, elastomer comprises dried environment and the wet or slurry environment of often running under various conditions in the process of brushing teeth, comfortable and non-sliding clamping face is provided.Elastomer also provides flexible characteristic, and it is particularly suitable for flexible brush head or other hinged handle designs.In addition, elastomeric material can be introduced in other parts such as, but be not limited to bristle and/or flexible pick.
The accompanying drawing summary
Fig. 1 is a toothbrush perspective view according to one embodiment of the present invention;
Fig. 2 is the last plane of Fig. 1 toothbrush;
Fig. 3 is the side view of Fig. 1 toothbrush;
Fig. 4 for example understands Flexible toothbrush head according to an embodiment of the invention;
Fig. 5 is the bottom plan view that is presented at the flexible brush head among Fig. 4;
Fig. 6 is a toothbrush perspective view according to another embodiment of the invention; With
Fig. 7 is a toothbrush perspective view according to another embodiment of the invention.
Detailed Description Of The Invention
Main reference manual toothbrush of the present invention carries out example and description, but should be understood the device that oral care implement comprises various other types, such as electric toothbrush, interior nearside (inter-proximal) tooth picks (pick), the dental floss utensil, plaque scrapers, tongue and soft tissue cleansers/massagers etc.
Fig. 1-3 for example understands to have brush holder 2, comprise cleaning element such as the brush 3 of bristle 4, tooth picks 5, a plurality of pod (socket) 6, tongue cleaning element 9 that quality is coarse.Brush holder 2 is preferably designed to and makes easy clamping of user and operate toothbrush.More particularly, brush holder 2 preferably is formed and/or comprises that ergonomic features is being the controllability that the user provides higher degree keeping in comfortable.The example of ergonomic features comprises the retained part 7 of molded, it can be fit to the user by segmentation and the size on ergonomics, with comprising of part, it is in certain angle and/or wideer or narrower controllability and the comfortableness so that the increase in the use to be provided of its other parts than brush holder.In the embodiment that is shown in Fig. 1-3, the retained part 8 that quality is coarse is provided at the zone line of brush holder 2, thereby so that provides non-sliding surface clamping toothbrush between thumb and forefinger for the user.Retained part 8 can, for example, be provided on the brush holder 2 homonymy with bristle 4, on brush holder 2 with the opposition side of bristle 4, or as Fig. 3 shows in both sides.
Preferably, brush 3, bristle 4, tooth picks 5 and pod 6 according to the manufacturing of ergonomics size and shaping so that cleaning of teeth comprises interior nearside (interproximal) cleaning of teeth.For example, although other moulding is desired, brush 3 shapes are generally ellipse or rectangle.Bristle 4 extends from the surface of brush 3, routinely size manufacturing and spaced apart with effective cleaning teeth.Tooth picks 5 can have size and the cone shape that is fit to promote inboard cleaning efficiency.
Brush 3 can be an integral body or forever adhere on the brush holder 2, perhaps also can be interchangeable with brush holder 2.One or more oral surfaces joint elements such as dental floss element, plaque scrapers etc., also can appear on the toothbrush 1.Although have such as tooth picks 5, pod 6, retained part 7 and 8 and the feature of scraping tongue element 9 at the toothbrush of Fig. 1-3 illustrated, each that should be understood that these features all be choose wantonly and illustrative just.In fact, toothbrush can have separately any of these features or with other not in any associating of the feature of this paper example.Should be realized when cleaning element this paper be illustrated as bristle 4 bunch the time, the cleaning element of other various sizes, shape, cross section and material also can be used.
Device can have die and mould part to store and distribution spices, aromatic, activating agent or other material.As in Fig. 1-3 illustrated, for example, a large amount of pods 6 can be positioned at the one or both ends of brush holder 2.Pod 6 can and be shaped to store spices, the capsule that produces fragrance or other material to be allocated releasedly according to the size manufacturing.For example, pod 6 can be molded as recessed hemisphere with suitable dimension so that produce the capsule of fragrance and be assigned with easily and replace by elastomeric material.Optionally, can be configured to store can the commercial spices that obtains or produce the gel capsules of fragrance for pod 6.
Brush 3 can be rigidity with flexibility.Fig. 1-3 has shown embodiment with rigid head and Fig. 4-6 for example understands the embodiment with flexible brush head toothbrush configurations.Fig. 4 has shown the flexible brush head 12 of toothbrush, and it is displayed in the United States Patent (USP) 5758383 (being introduced into this paper as a reference), has first 14 and second portion 16 and therebetween elastomer portions or joint 18.
Brush holder and brushhead portion are preferably formed such as the polypropylene molding by plastics or resin, and joint 18 can be formed by propylene-ethylene copolymers elastomer of the present invention.From the view of Fig. 5 as can be seen, comprise elastomeric part 18 and cross brushhead portion 14 between its side and 16 width.Other details of Flexible toothbrush head, and other can with flexible brush head configuration example description is also arranged in US2002-0152570A1, its disclosure is introduced into this paper as a reference.
Fig. 6 for example understands another embodiment of the toothbrush 80 with brush 87, and brush 87 can be rigidity or flexible, as the description about Fig. 4-5 embodiment.Brush 87 has cleaning element, and its form is bristle 86 and is arranged in circumference part elastomer massage elements 94 on every side in a large number.Elastomer massage elements 94 can be formed by the propylene-ethylene copolymers elastic body moulding.Elastomer massage elements 94 is longer slightly and can be used for massaging gum in the process of brushing teeth than bristle 86 usually.The other parts of toothbrush such as retained part 91,97, also can be introduced the propylene-ethylene copolymers elastomer.
Fig. 7 has shown to have the supporter 101 that comprises brush holder 103 and brush 105 and as be shown in another embodiment of the toothbrush 100 of the cleaning of teeth element 200 among the US 2005-0000048 (being introduced into this paper as a reference).Brush 105 is also included within the far-end cleaning element 203a-b of far-end 107, and across the longitudinal axis of toothbrush 100.Far-end cleaning element 203a-b is outstanding from basal plane 109 usually, is higher than the top of other cleaning of teeth element.Cleaning of teeth element 200 also can comprise arc cleaning element 211a-b and center cleaning element 207a-c.Arbitrarily or all far-end cleaning element 203a-b, center cleaning element 207a-c and arc cleaning element 211a-b can form by elastomeric propylene-ethylene copolymer.
Adopt those traditional molding technologies that is well known to those skilled in the art, such as molded or common injection-molded technology, the propylene-ethylene copolymers elastomer can be introduced in each parts of toothbrush.Elastomer can be used for forming brush holder or a part wherein, the flexible joint in the brush, flexible pick, elastomer cleaning element, bristle, tongue cleaning element, other parts of oral care implement or their any combination.
The suitable propylene-ethylene copolymers elastomer that can be used for the present invention's practice can commercially obtain, such as Versify
Figure A20068003543600071
, it can obtain from Dow Chemical Company.Elastomeric propylene-ethylene copolymer can prepare with metallocene polymerization, and such as adopting as authorizing 4 family's metal complex catalysts of describing among the US 2004/0087751 of Tau etc., its disclosure is introduced into this paper as a reference.Copolymer preferably has about molecular weight distribution of 2 to 3.Molecular weight distribution is weight average molecular weight (M w) and number-average molecular weight (M n) ratio.Other preferred physical properties of propylene-ethylene copolymers comprises from about 5 co-monomer content to about 15 weight %; About 0.8 to 0.9g/cc density preferably approximately 0.858 arrives 0.888g/cc; 30 to 80 Xiao A hardness (ASTM D-2240), preferably approximately 50 to about 75; Approximately-15 arrive approximately-35 ℃ glass transition temperature (ASTME1356-98); With about 1000 to the bending modulus (ASTM D-790A) of about 40000psi.
What another kind was available can the commercial elastomer embodiment that obtains be Vistamaxx
Figure A20068003543600072
, a kind of metallocene catalyst based elastomeric can obtain from ExxonMobil.This polymer has from about 30 Xiao A hardness to about 65 scopes; 0.86-0.99 proportion; The melt flow rate (MFR) of 1-20g/10min (ASTM D-1238); Approximately-20 arrive approximately-30 ℃ glass transition temperature; About 40 to about 160 ℃ melt temperature; The hot strength (ASTMD-638) of about 2200-400p.s.i.; About 1000 to about 3000psi bending modulus; Extension at break (ASTM D-638) with about 100-1500%.
The propylene-ethylene copolymers elastomer that the present invention describes has intrinsic elasticity with the form of as-polymerized.Other normally used thermoplastic elastomer (TPE) (TPE) is the compound of copolymer (for example, styrene block copolymer), filler, flowable (mobilizers) (for example, atoleine and solid paraffin etc.) and other additive; Or the compound of polypropylene, sulfuration or unvulcanised synthetic elastomer particle and other additive.Owing to do not need how loaded down with trivial details stirring and composite steps usually, comparatively speaking, the propylene-ethylene copolymers elastomer of describing among the present invention has intrinsic and consistent lower manufacturing cost.In addition, the propylene-ethylene copolymers elastomer has been avoided various fillers and the additive (it can cause not meeting Food Contact requirement of FDA or its suitable mechanism regulation) that need find in a lot of thermoplastic elastomer (TPE)s (TPE).
The propylene-ethylene copolymers elastomer preferably with polyolefin such as polypropylene homopolymer and/or polypropylene copolymer fusion.The polyolefinic non-limitative example of other fusion comprises high density polyethylene (HDPE) (HDPE) and low density polyethylene (LDPE) (LDPE).Depend on such factor with the polyolefin amount of elastomer fusion, as the desired physical property of molded section and the special molded operation of use.The most common ground, amount of polyolefin used ranges from about 5 to about 20 weight %.Usually, higher levels of polyolefin (and/or nucleation reagent) reduces molding cycle and improves molding performance, but has also damaged the expected performance of being given by elastomer, for example, and soft, non-sliding clamping etc.Polypropylene is the preferred material that is used for fusion, particularly for compatibility purpose (when admixture is over-molded onto on the polypropylene substrate base).
Can select in the embodiment, one or more parts that oral care implement has are by the propylene-ethylene copolymers elastomer and TPV (TPV) the fusion structure of about 30 to about 80 Xiao A hardness.Elastomer/TPV admixture can be used for constructing brush holder, or the retained part of brush holder, toothpick portion, brushhead or its part, bristle portion, tongue cleaning element, elastomer cleaning of teeth element and/or storage portion, the pod that for example is used to disperse spices or produces flavored capsules.For this embodiment, although also can use other above-mentioned propylene-ethylene copolymers elastomer, a kind of preferred propylene-ethylene copolymers elastomer is the Versify that can get from Dow Chemical
Figure A20068003543600081
Elastomer/TPV admixture can be used for constructing the one or more parts of oral care implement, as described in embodiment before the reference.
Exist TPV to improve molding performance in the elastomer and can significantly not damage flexibility and elastomeric other performance of expectation.The non-limitative example of spendable TPV comprises Vyram TMAnd Santoprene TM, can obtain from ExxonMobil.
The propylene-ethylene copolymers elastomer also can mix with one or more additives, and its non-limitative example comprises organic or inorganic filler, light stabilizer, plasticiser, processing aid (such as oil or stearic acid), colouring agent or pigment.The suitable filling of these additives is obvious for the those of ordinary skill in this field, and does not need by more routine test.Additive should not hinder the desired physical property of elastomer.
Be described in conjunction with its particular embodiment although should be understood that the present invention, the description of front and embodiment want to illustrate rather than limit the scope of the invention.Although special toothbrush configurations is illustrated, the present invention is not restricted to shown any aesthstic aspect, in fact, and may there were significant differences with illustrated configuration.

Claims (25)

1, a kind of oral care implement that comprises elastomeric propylene-ethylene copolymer.
2, the oral care implement of claim 1, wherein copolymer comprises and is lower than about 80 Xiao A hardness.
3, the oral care implement of claim 2, wherein copolymer has about 5 to about 15 weight % ethylene comonomer content.
4, the oral care implement of claim 2, wherein copolymer has about 0.8 to 0.9g/cc density.
5, the oral care implement of claim 2, wherein copolymer has approximately-15 to about-35 ℃ glass transition temperature.
6, the oral care implement of claim 2, wherein copolymer has about 1000 to about 40000psi bending modulus.
7, the oral care implement of claim 6, wherein bending modulus is about 1000 to about 3000psi.
8, the oral care implement of claim 2, wherein copolymer has the extension at break of about 1 00-about 1500%.
9, the oral care implement of claim 2, wherein copolymer has about molecular weight distribution of 2 to 3.
10, the oral care implement of claim 1, wherein copolymer and polyolefin blend.
11, the oral care implement of claim 1, wherein copolymer and TPV fusion.
12, the oral care implement of claim 1, wherein copolymer and the fusion of nucleation reagent.
13, the oral care implement of claim 1, wherein copolymer has about 30 to about 65 Xiao A hardness.
14, the oral care implement of claim 1 further comprises the tooth-brush handle or its retained part that contain described copolymer.
15, the oral care implement of claim 1 further comprises the head toothbrushes or its part that contain described copolymer.
16, the oral care implement of claim 15, wherein brush is a flexible brush head, it has the joint by this copolymer structure.
17, the oral care implement of claim 1 further comprises the bristle part that contains described copolymer.
18, the oral care implement of claim 1 further comprises at least a in retained part, toothpick section, brushhead or its part, bristle portion, tongue cleaning element, elastomer cleaning of teeth element and the storage portion of the brush holder that contains described copolymer, brush holder.
19, a kind of Oral cleaner that comprises brush holder and brush, wherein to the brush holder of small part, brush or both are by elastomeric propylene-ethylene copolymer structure, this copolymer has and is lower than about 80 Xiao A hardness, about 5 to about 15 weight % ethylene comonomer content, about 0.8 to 0.9g/cc density, approximately negative 15 to approximately bearing 35 ℃ glass transition temperature and about 1000 to about 40000psi bending modulus.
20, the oral care implement of claim 19, wherein brush comprises the flexible joint by the elastomer copolymer structure.
21, the oral care implement of claim 19, wherein brush holder comprises the retained part by the elastomer copolymer structure.
22, the oral care implement of claim 19, wherein brush comprises a large amount of bristles by the elastomer copolymer structure.
23, the oral care implement of claim 19, wherein copolymer and polyolefin blend.
24, the oral care implement of claim 19, wherein copolymer and TPV fusion.
25, the oral care implement of claim 17, wherein copolymer and the fusion of nucleation reagent.
CNA2006800354368A 2005-07-27 2006-07-26 Oral care implement comprising an elastomeric polypropylene-ethylene copolymer Pending CN101296635A (en)

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US60/702,736 2005-07-27

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EP (1) EP1906790A1 (en)
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AU (1) AU2006275960A1 (en)
BR (1) BRPI0614159A2 (en)
CA (1) CA2616518A1 (en)
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CN105050450A (en) * 2012-12-10 2015-11-11 高露洁-棕榄公司 Oral care implement
US9427074B2 (en) 2012-12-10 2016-08-30 Colgate-Palmolive Company Oral care implement
CN105050450B (en) * 2012-12-10 2017-08-25 高露洁-棕榄公司 Oral care implement
WO2016131197A1 (en) * 2015-02-18 2016-08-25 Colgate-Palmolive Company Oral care implement
CN107249385A (en) * 2015-02-18 2017-10-13 高露洁-棕榄公司 Oral care implement
RU2677603C1 (en) * 2015-02-18 2019-01-17 Колгейт-Палмолив Компани Oral care implement
CN107249385B (en) * 2015-02-18 2019-06-18 高露洁-棕榄公司 Oral care implement

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RU2371069C1 (en) 2009-10-27
US20070163064A1 (en) 2007-07-19
TW200722006A (en) 2007-06-16
KR20080026657A (en) 2008-03-25
WO2007016066A1 (en) 2007-02-08
EP1906790A1 (en) 2008-04-09
CA2616518A1 (en) 2007-02-08
BRPI0614159A2 (en) 2016-11-22
MX2008001108A (en) 2008-03-11
AU2006275960A1 (en) 2007-02-08
RU2008107322A (en) 2009-09-10

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