CN104245822A

CN104245822A - Compositions comprising EPDM and a polyolefin elastomer, preparation and use thereof

Info

Publication number: CN104245822A
Application number: CN201280071176.5A
Authority: CN
Inventors: 励亮; M·B·乔希; J·沈; E·P·茹尔丹; V·K·逖瓦利; 童军; P·P·帕特奇
Original assignee: Exxon Chemical Patents Inc
Current assignee: ExxonMobil Chemical Patents Inc
Priority date: 2012-03-09
Filing date: 2012-03-09
Publication date: 2014-12-24
Anticipated expiration: 2032-03-09
Also published as: WO2013131207A8; CN104245822B; WO2013131207A1

Abstract

Compositions comprising ethylene-propylene-diene terpolymer (EPDM) and polyolefin elastomer. The compositions comprises: (a) an EPDM having a Mooney viscosity [ML(l+4) 125 DEG C] of 25 to 300 and an ethylene content of at least 60wt% of the EPDM and (b) a polyolefin elastomer. The existence of the polyolefin elastomer increases the rheological behavior of the compositions to the degree that other properties such as the tensile breaking strength and the compression set are not substantially reduced.

Description

Comprise the composition of EPDM and polyolefin elastomer, its preparation and purposes

The cross reference of related application

The application relates to the U.S. serial 12/621,020 (attorney docket 2009EM237) of submission on November 18th, 2009.

Invention field

The present invention relates to polymer composition.More specifically, the present invention relates to the composition comprising ethylene-propylene-diene terpolymer and polyolefin elastomer, its preparation method, and goods prepared therefrom.

Background of invention

The processing characteristics of character to their end-uses comprising the composition of ethylene-propylene-diene terpolymer (EPDM) has a direct impact.Human consumer's application needs the composition comprising EPDM by adding the multiple adjustment of the component compatible with EPDM to obtain certain character.By by a small amount of low mooney viscosity [ML (1+4) 125 DEG C], such as mix relatively high Mooney viscosity [ML (1+4) 125 DEG C] lower than the EPDM of 25, be usually greater than the common EPDM of 60 to reach the mobility significantly increased, thus improve rheological property.But this composition causes widely used cost higher usually.

The U.S. announces No.2011-0118404A1 and relates to natural rubber blends, its preparation method, and goods prepared therefrom.At least one that comprises described natural rubber blends contains the propylene copolymer of the unit deriving from ethene.Described natural rubber blends can comprise one or more reinforcing fillers further, such as carbon black.The existence of propylene copolymer allegedly can improve the aging resistance of ozone resistance and natural rubber uncompounded rubber (gum stock).

" the Use of specialty elastomer Vistamaxx VM1100in an EPDM gum stock " of Xiao Sheng, Rubber Industry, 483-486 page, 8th phase, 54th volume, 2007, reported certain elastomerics based on propylene join containing mooney viscosity [ML (1+4) 125 DEG C] be about 80 EPDM and comparatively low mooney viscosity [ML (1+4) 125 DEG C] in the EPDM uncompounded rubber of the EPDM of 17-23 to replace compared with the EPDM of low mooney viscosity with the amount part relative to the no more than 20phr of the total amount of two kinds of EPDM components.This replacement allegedly can reduce production cost, simultaneously basic thermal ageing and the compressive set performance keeping original uncompounded rubber.This reference also concludes, obviously can not be changed at the rheological property of processing (such as, extruding) period uncompounded rubber by the elastomerics based on propylene.

The demand increased fast due to low mooney viscosity EPDM starting material the most in recent years and relative nervous supply, expect the substitute with low mooney viscosity EPDM, and it is also used for improving the mobility of the composition comprising EPDM.Applicant has been found that some polyolefin elastomer, particularly based on the elastomerics of propylene, can providing package containing the mobility of composition for improved of EPDM with relatively high Mooney viscosity, especially when using with the amount such as lower than about 20phr relative to described EPDM.Acquisition comprises the good mobility of EPDM composition and weakens other character indistinctively, such as fracture tensile strength and compressive set, is that one has more cost effective means, therefore make the present composition to subsequent applications, such as extrude advantageous particularly.

Summary of the invention

Providing package contains the composition of EPDM, polyolefin elastomer, its preparation method, and goods prepared therefrom.In one embodiment, a kind of composition is contained in the present invention, and it comprises: (a) mooney viscosity [ML (1+4) 125 DEG C] is the ethylene-propylene-diene terpolymer of about 25-about 300 and the ethylene content of this EPDM is at least about 60wt%; (b) polyolefin elastomer.

In one embodiment, the present invention relates to a kind of method preparing composition, it comprises the following steps: (a) by (i) mooney viscosity [ML (1+4) 125 DEG C] is the EPDM of about 25-about 300 and the ethylene content of this EPDM is at least about 60wt% with (ii) polyolefin elastomer is combined, and (b) forms described composition.

A kind of goods are also contained in the present invention, and it comprises arbitrary composition that is described herein or that prepare according to any means disclosed herein.Preferably, described goods are extruded product, moulded product, flexible pipe, sheet material, film or overcoat.

In one embodiment, the present invention relates to a kind of method reducing the mooney viscosity of composition, it comprises the following steps: (a) by (i) mooney viscosity [ML (1+4) 125 DEG C] is the ethylene-propylene-diene terpolymer of about 25-about 300 and the ethylene content of this ethylene-propylene-diene terpolymer is at least about 60wt% with (ii) polyolefin elastomer is combined, and (b) forms described composition.

In a preferred embodiment, polyolefin elastomer is containing deriving from the unit of propylene at least about 60wt% and about 5-is about the elastomerics based on propylene that 25wt% derives from the unit of ethene, based on the described elastomeric total weight based on propylene, the wherein said elastomerics based on propylene has the melting heat lower than about 80J/g.In a preferred embodiment, the mooney viscosity [ML (1+4) 100 DEG C] of described composition is than the low about 0-about 15 of the mooney viscosity [ML (1+4) 100 DEG C] of the composition that other side is identical not containing described polyolefin elastomer but with regard to composition.

Accompanying drawing is sketched

When Fig. 1 depicts that in composition, EPDM content is 25wt%, compared with the first comparative example, sample 1-3 of the present invention and sample 1a-3a mooney viscosity separately [ML (1+4) 100 DEG C] are (Fig. 1 a), mooney scorch, it is expressed as mooney viscosity improves 5 units (T5) time (Fig. 1 b) at 125 DEG C, and reaches the set time (Fig. 1 c) of 90% vulcanization curve (T90) at 180 DEG C.

When Fig. 2 depicts that in composition, EPDM content is 25wt%, compared with the first comparative example, the tensile break strength after sample 1-3 of the present invention and sample 1a-3a is aging separately and tensile strength remaining.

When Fig. 3 depicts that in composition, EPDM content is 25wt%, compared with the first comparative example sample 1-3 of the present invention and sample 1a-3a each comfortable 25% bend under compressive set (%).

When Fig. 4 depicts that in composition, EPDM content is 20wt%, compared with the second comparative example, sample 4-6 of the present invention and sample 4a-6a mooney viscosity separately [ML (1+4) 100 DEG C] are (Fig. 4 a), mooney scorch (Fig. 4 b), it is expressed as mooney viscosity improves 5 units (T5) time at 125 DEG C, and reaches the set time (Fig. 4 c) of 90% vulcanization curve (T90) at 180 DEG C.

When Fig. 5 retouches and understood that in composition, EPDM content is 20wt%, compared with the second comparative example, the respective tensile break strength of sample 4-6 of the present invention and sample 4a-6a and aging after tensile strength remaining.

When Fig. 6 describes that in composition, EPDM content is 20wt%, compared with the second comparative example, the compressive set (%) of sample 4-6 of the present invention and sample 4a-6a under 25% flexure.

Detailed description of the present invention

Multiple embodiment of the present invention and pattern now will be described, the definition comprising preferred implementation and adopt herein.Although below describe in detail and give concrete preferred implementation, it will be appreciated by those skilled in the art that these embodiments are exemplary, the present invention puts into practice by alternate manner.Any to this " invention " refer to one or more the present invention that can refer to be defined by the claims, but unnecessary be whole.The use of subhead is only used to object easily, does not limit the scope of the invention.

As described herein, " polymkeric substance " can be used for referring to homopolymer, multipolymer, interpretation, terpolymer etc.

As described herein, when polymkeric substance referred to as comprise monomer time, described monomer is present in described polymkeric substance with this monomer polymerization form or this monomer derived thing form.

As described herein, " elastomerics " or " elastic composition " refers to the composition (blend of such as polymkeric substance) defining consistent any polymkeric substance or polymkeric substance with ASTM D1566.Elastomerics comprises the mixing blend of polymkeric substance, the melt blending of such as polymkeric substance and/or reactor blend.This term can exchange with term used herein " rubber " and use.

As described herein, " phr " is the number of every hundred parts of rubber, or " number ", and it is tolerance common in this area, wherein measures the component in composition relative to main elastomer component, based on 100 parts of weight of elastomerics or rubber.

As described herein, composition " not containing " a kind of component refers to that composition lacks this component substantially, or comprises this component with the gross weight based on composition lower than the amount of about 0.01wt%.

The present invention relates to the composition comprising ethylene-propylene-diene terpolymer (EPDM) and polyolefin elastomer.This polyolefin elastomer, when with relative to EPDM such as lower than about 150phr, lower than about 100phr, lower than about 50phr, lower than about 20phr certain amount use time, the mooney viscosity of the reduction of composition can be realized with cost effective means, and significantly do not weaken other character.

In one embodiment, a kind of composition is contained in the present invention, and described composition comprises: a) mooney viscosity [ML (1+4) 125 DEG C] is the ethylene-propylene-diene terpolymer (EPDM) of about 25-about 300 and the ethylene content of this EPDM is at least about 60wt%; And b) polyolefin elastomer.In a preferred embodiment, described polyolefin elastomer is comprise to derive from the unit of propylene at least about 60wt% and about 5-is about the elastomerics based on propylene that 25wt% derives from the unit of ethene, based on the described elastomeric total weight based on propylene, the wherein said elastomerics based on propylene has the melting heat lower than about 80J/g.Preferably, the mooney viscosity [ML (1+4) 100 DEG C] of described composition is than the low about 0-about 15 of the mooney viscosity [ML (1+4) 100 DEG C] of the composition that other side is identical not containing described polyolefin elastomer but with regard to composition.

Ethylene-propylene-diene terpolymer

Embodiments of the present invention comprise ethylene-propylene-diene terpolymer (EPDM).In one embodiment, EPDM has the mooney viscosity (ML [1+4] 125 DEG C) of about 25-about 300 and accounts for the ethylene content of EPDM at least about 60wt%.In another embodiment, EPDM has the mooney viscosity (ML [1+4] 125 DEG C) of about 60-about 90, and optimal ethylene content accounts for EPDM and is about 60-and is about 75wt%.In still another embodiment, EPDM has the mooney viscosity (ML [1+4] 125 DEG C) of about 70-about 75, and optimal ethylene content accounts for EPDM and is about 65-and is about 70wt%.In one embodiment, determine according to ASTM D1646, EPDM has (ML [1+4] 125 DEG C) about 25-about 300, preferably about 50-about 150, more preferably 60-about 90, and the mooney viscosity of most preferably from about 70-about 75.In some embodiments, EPDM has about 25, about 30, about 35, about 40, about 45, about 50, about 55, about 60, about 65, about 70 to about 75, about 80, about 85, about 90, about 95, about 100, about 105, about 110, about 115, about 120, about 125, about 130, about 135, about 140, about 145, about 150, about 155, about 160, about 165, about 170, about 175, about 180, about 185, about 190, about 195, about 200, about 205, about 210, about 215, about 220, about 225, about 230, about 235, about 240, about 245, about 250, about 255, about 260, about 265, about 270, about 275, about 280, about 285, about 290, about 295, or about 300, or herein quote from mooney viscosity (ML [1+4] 125 DEG C) in the scope of the arbitrary combination of numerical value.In some embodiments, EPDM have account for EPDM about 60, about 61, about 62, about 63, about 64, about 65, to about 70, about 71, about 72, about 73, about 74, about 75, about 76, about 77, about 78, about 79, about 80, about 81, about 82, about 83, about 84, about 85, about 86, about 87, about 88, about 89, about 90, about 91, about 92, about 93, about 94, about 95, about 96, about 97, about 98, or about 99wt%, or herein quote from ethylene content in the scope of the arbitrary combination of numerical value.In one embodiment, the amount that EPDM is about 45wt% with about 10-is present in composition of the present invention.In some embodiments, EPDM is present in described composition with the amount of about 10-about 15, about 20, about 25, about 30, about 35, about 40, about 45 or about 50wt%.

In one embodiment, EPDM comprises the unit that at least 60wt% derives from ethene, and preferably about 60-is about the unit that 75wt% derives from ethene, and more preferably from about 65-is about the unit that 70wt% derives from ethene.The scope deriving from the amount of the unit (or " diene ") of diene in this EPDM is about 15wt% for about 0.3-, and preferably about 0.3-is about 10wt%, and more preferably from about 0.3-is about 8wt%, and most preferably from about 0.3-is about 6wt%.Suitable diene comprises, such as: Isosorbide-5-Nitrae-hexadiene, 1,6-octadiene, 5-methyl isophthalic acid, 4-hexadiene, 3,7-dimethyl-1,6-octadiene, Dicyclopentadiene (DCPD) (DCPD), ethylidene norbornene, norbornadiene (ENB), 5-vinyl-2-norbornylene (VNB) and their combination.Described diene most preferably ENB.Ethylene content is determined by ASTM D3900, and does not revise diene content.The ENB content being incorporated to polymkeric substance is determined by FTIR, ASTM D6047.The diene content comprising the terpolymer of VNB preferably by ¹h NMR measures.These methods measure available degree of unsaturation.Therefore, because the diene with unsaturated pendant side group moiety is converted, such as, by hydrogen, and be not detected in mensuration, the amount of being incorporated to measured may lower than the amount of being incorporated to of reality.If ENB and VNB exists, ¹³c NMR is preferably used for measuring diene content.

EPDM polymkeric substance as herein described preferably has the MWD of about 2-about 20.As described herein, the method common by this area, such as be furnished with differential refraction rate (DRI) detector and Chromatix KMX-6 on Waters 150 gel permeation chromatograph of line light scattering photometer by GPC (gel permeation chromatography), measuring MWD (M _w/ M _n).This system uses at 135 DEG C, adopts 1,2,4-trichlorobenzene as moving phase, uses Shodex (Showa Denko America, Inc) polystyrene gel post 802,803,804 and 805.In " Liquid Chromatography of Polymers and Related Materials III " (J.Cazes edits, Marcel Dekker, 1981, p207), discuss this technology, the document is incorporated to herein by reference.Coupled columns expansion does not correct; But, in the standard usually accepted, the data that the polyisoprene (ethylene-propylene copolymer replaced) of the hydrogenation that State Bureau of Standardization's polyethylene 1484 and anionic polymerization are produced such as, obtain show, are less than 0.05 unit to this correction of MWD.Mw/Mn is calculated by elution time.The LALLS software combined standard gel infiltration software package using commercially available Beckman/CIS to customize carries out numerical analysis.The citation of Mw/Mn represents, Mw is the value using LALLS detector recording, and Mn is then the value using above-mentioned DRI detector recording.

The triad tacticity of preferred EPDM polymkeric substance (its by ¹³c NMR measures) be 75% or larger, 80% or larger, 82% or larger, 85% or larger, or 90% or larger.The triad tacticity of polymkeric substance is the relative tacticity of three adjacent propylene units sequences, and this sequence is the chain of key composition from the head to the tail, is expressed as the binary combination of m and r sequence.For half non-crystalline copolymer, it is typically expressed as the ratio of all propylene triad numbers in the number of unit and multipolymer of specifying tacticity.The triad tacticity (mm mark) of this EPDM polymkeric substance can by propylene copolymer ¹³c NMR spectrum and following formula measure.

Mm mark=PPP (mm)/(PPP (mm)+PPP (mr)+PPP (rr)),

Wherein PPP (mm), PPP (mr) and PPP (rr) represent in the following three propylene units chains be made up of head-to-tail enchainment by the peak area deriving from methyl of second unit:

PPP(mm)：

PPP(mr)：

PPP(rr)：

As in U.S. Patent No. 5,504, measure this EPDM polymkeric substance described in 172 ¹³c NMR composes.The spectrum relevant with methyl carbon region (1,000,000/19-23 (ppm)) can be divided into first area (21.2-21.9ppm), second area (20.3-21.0ppm) and the 3rd region (19.5-20.3ppm).With reference to periodical " Polymer ", the 30th volume (1989), each peak in this spectrum determined in the article in the 1350th page.In the first region, the methyl of the second unit in the three propylene units chains represented with PPP (mm) resonates.In the second area, the methyl of the second unit in the three propylene units chains represented with PPP (mr) resonates, and its adjacent cells is that the methyl (PPE-methyl) of the propylene units of propylene units and ethylene unit resonates (near 20.7ppm).In the 3rd region, the methyl of the second unit in the three propylene units chains represented with PPP (rr) resonates, and its adjacent cells is that the methyl (EPE-methyl) of the propylene units of ethylene unit resonates (near 19.8ppm).The method of calculation of triad tacticity are described in U.S. Patent No. 5,504, in the technology shown in 172.(2 are inserted from the peak area deduction propylene of the total peak area in second area and the 3rd region, 1 and 1,3 two kinds) error peak area, the peak area of the 3 propylene units chains (PPP (mr) and PPP (rr)) based on key composition from the head to the tail can be obtained.Therefore, the peak area of PPP (mm), PPP (mr) and PPP (rr) can be evaluated, thus the triad tacticity of the propylene units chain of key composition from the head to the tail can be measured.

In a preferred embodiment, EPDM polymkeric substance can have and is more than or equal to about 0.5 joule every gram (J/g), and is less than or equal to about 70J/g, is preferably less than or equal to about 50J/g, preferably be less than or equal to about 35J/g, be preferably less than or equal to melting heat (the Δ H of about 25J/g _f).Preferably this EPDM polymkeric substance also has and is more than or equal to about 1J/g, preferably greater than or equal to about 2.5J/g, preferably greater than or equal to the melting heat of about 5J/g.Can determine thermodynamics melting heat data by dsc (DSC), its step is as follows.Be about the polymer sheet of 10mg in about 200 DEG C-230 DEG C compactings and the about 6-that cools under envrionment temperature (25 DEG C and 50% humidity under 24 hours) with punch die removing.At room temperature anneal this sample 80-100 hour.At the end of annealing, this sample be placed in differential scanning calorimeter (Perkin Elmer 7 Series Thermal Analysis System) and be cooled to-50 DEG C to-70 DEG C.This sample is heated to the outlet temperature of 200 DEG C-220 DEG C subsequently with the speed of 20 DEG C/min.Thermal output is recorded as the area of below this sample melting peak curve, and this melting peak curve typically reaches peak value at 30 DEG C-175 DEG C, and occurs the temperature of 0 DEG C-200 DEG C.The thermal output represented with joule is measuring of melting heat.

In a preferred embodiment, EPDM polymkeric substance has 0.5-40, preferably 1-30, and the % degree of crystallinity of more preferably 5-25, and wherein % degree of crystallinity is according to DSC step measurements as herein described.Used herein, the degree of crystallinity of propylene-ethylene polymer also can be expressed by percent crvstallinity.The maximum amount level of polyacrylic heat energy is estimated 189J/g (that is, 100% degree of crystallinity equals 189J/g).In another embodiment, propylene-ethylene polymer of the present disclosure has preferably lower than 40%, preferably about 0.25%-about 25%, more preferably from about 0.5%-about 22%, and the degree of crystallinity of most preferably from about 0.5%-about 20%.

Except such crystallinity level, this EPDM polymkeric substance preferably has single, wide melting transition.Fusing point is defined as the temperature that maximum heat absorbs in sample fusion range.But this EPDM polymkeric substance can show secondary melting peaks at main peak adjacent, but with object herein, this secondary melting peaks is considered as single fusing point together, and wherein climax is considered to the fusing point (T of this propylene-ethylene polymer _m).This EPDM polymkeric substance preferably has about 25 DEG C-105 DEG C, preferably 25 DEG C of-Yue 85 DEG C, preferably 25 DEG C of-Yue 75 DEG C, preferably about 25 DEG C of-Yue 65 DEG C, more preferably from about 30 DEG C of-Yue 80 DEG C, more preferably from about the fusing point of 30 DEG C of-Yue 70 DEG C and more preferably from about 30 DEG C of-Yue 60 DEG C.

Suitable EPDM polymkeric substance is with VISTALON ^tMtrade(brand)name commercially available (ExxonMobil Chemical Company, Houston, TX, USA).

Polyolefin elastomer

As described herein, term " polyolefin elastomer " refers to the polymer elastomer be made up of the unit that at least 50wt% derives from alkene, and its example comprises ethene and C _3-16alpha-olefin, and their combination.The example of this alkene comprises ethene, propylene, 1-butylene, iso-butylene, 2-butylene, cyclobutene, 1-amylene, 1-hexene, 4-methyl-1-pentene, 1-octene, 3-methyl-1-butene, 4-methyl isophthalic acid-butylene, cyclopentenes, 1-hexene, tetrahydrobenzene, 1-octene, 1-decene, 1-dodecylene etc.These can separately or with wherein two or more combinationally use.In some preferred implementation, polyolefin elastomer be comprise at least 50wt% derive from those of the unit of ethene or propylene or butylene.

This polyolefin elastomer can be random copolymers (deriving from the unit of comonomer along main polymer chain random distribution), segmented copolymer (unit deriving from comonomer occurs along long sequence), or wherein any variant.The degree of randomness of multipolymer or the existence of triad tacticity can by known in the art and as herein described ¹³c NMR measures, such as, and 18J.POLY.SCI.:POLY.LETT.ED. 389-394 page (1980).

In some embodiments, the lower limit of the Shore A hardness of this polyolefin elastomer is about 10, about 20, about 30, about 40, about 50, or about 60 to the upper limit be about 70, about 75, about 80, about 85, about 90, or about 95, it is measured by ASTM D2240.

In one or more preferred implementations, this polyolefin elastomer has and is greater than about 0.1g/10min, about 0.5g/10min, about 1g/10min, about 2g/10min, about 5g/10min, or about 10g/10min, with preferred about 20g/10min, about 40g/10min, about 80g/10min, about 100g/10min at the most, or the melt flow rate (MFR) of about 200g/10min (MFR), it is measured by ASTMD1238, at 230 DEG C, and 2.16kg.

In some embodiments, polyolefin elastomer of the present invention has at least about 100%, at least about 200%, at least about 300%, and at the most about 800%, about 1000% or about 2000%, with the elongation at break of preferred about 100%-about 2000%, it is measured by ASTM D412.

In some embodiments, polyolefin elastomer of the present invention has about 0.83g/cm ³-Yue 0.9g/cm ³, preferably about 0.85g/cm ³-Yue 0.89g/cm ³, about 0.86g/cm ³-Yue 0.88g/cm ³, or about 0.86g/cm ³-Yue 0.87g/cm ³density, it is measured by ASTM D1505.

In some embodiments, polyolefin elastomer of the present invention has about 8MPa-and is about 100Mpa in 1% secant (73 °F) (23 DEG C) modulus in flexure, and it is measured by ASTM D790.

In some embodiments, the present invention's polyolefin elastomer used is with lower than about 150phr, and be preferably lower than about 100phr, more preferably lower than about 50phr, the amount most preferably lower than about 20phr exists.In embodiments of the present invention, this polyolefin elastomer is to be greater than 0phr and to exist lower than the amount of about 20phr relative to EPDM, such as, about 1phr, about 2phr, about 3phr, about 4phr, about 5phr, about 6phr, about 7phr, about 8phr, about 9phr, about 10phr, about 11phr, about 12phr, about 13phr, about 14phr, about 15phr, about 16phr, about 17phr, about 18phr, about 19phr.

In a preferred embodiment, polyolefin elastomer of the present invention is comprise to derive from the unit of propylene at least about 60wt% and about 5-is about the elastomerics based on propylene that 25wt% derives from the unit of ethene, based on the described elastomeric gross weight based on propylene, the wherein said elastomerics based on propylene has the melting heat lower than about 80J/g.Should based on elastomerics of propylene be derive from propylene unit and derive from ethene or C _4-10the multipolymer of alpha-olefin unit one of at least.Due to adjacent isotactic propylene units and fusing point as herein described, limited degree of crystallinity should be had based on the elastomerics of propylene.Compared with height isotactic polyprophlene, should the introducing of error be inserted by propylene based on the elastomeric degree of crystallinity of propylene and fusing point and reduce.Based on the elastomerics of propylene usually not containing the intermolecular ununiformity of any essence in tacticity and comonomer composite, and usually should there is no any essence ununiformity of composition distribution in molecule yet.

Derive from ethene or C _4-10alpha-olefin unit one of at least or comonomer about can be about 35wt% by 1-, or about 5-is about 35wt%, preferably about 7-is about 32wt%, and more preferably from about 8-is about 25wt%, even more preferably from about 8-is about 20wt%, and the amount that most preferably from about 8-is about 18wt% is present in this based in the elastomerics of propylene.Can adjust co-monomer content makes the elastomerics based on propylene have melting heat lower than about 80J/g, about 105 DEG C or less fusing point, and the degree of crystallinity of the isotactic polyprophlene of about 2%-about 65%, and is about the MFR of 20g/10min for about 2-.

Elastomerics based on propylene can comprise more than a kind of comonomer.The elastomeric preferred implementation based on propylene had more than a kind of comonomer comprises propylene-ethylene-octene, propylene-ethylene-hexene, and propylene-ethylene-butene polymkeric substance.Ethene or C is derived from more than one at some _4-10in the embodiment that alpha-olefin comonomer one of at least exists, a kind of amount of comonomer can lower than the elastomeric about 5wt% based on propylene, but the total amount of the elastomeric comonomer of propylene is about 5wt% or more.

In a preferred embodiment, comonomer is ethene, 1-hexene, or 1-octene.In one embodiment, should comprise based on the elastomerics of propylene the unit deriving from ethene.Should can comprise about 5-based on the elastomerics of propylene and be about 25wt%, preferably about 8-is about 20wt%, or about 9-is about the elastomeric unit deriving from ethene be somebody's turn to do based on propylene of 16wt%.In some embodiments, should based on elastomerics of propylene substantially by deriving from propylene and ethylene unit forms, namely, based on propylene elastomerics not with in typically used in the course of the polymerization process ethene and/or propene feed streams Impure forms exist amount, or so that the amount of the melting heat of the multipolymer affected in essence based on propylene, fusing point, degree of crystallinity or melt flow rate (MFR) is contained other comonomer any, or not containing any other comonomer specially joined in polymerization technique.

Elastomerics based on propylene can have (its by ¹³c NMR measures) at least about 75%, at least about 80%, at least about 82%, at least about 85%, or the triad tacticity of three propylene units at least about 90%.Preferably, about 50-about 99% should be had, about 60-about 99%, the triad tacticity of more preferably from about 75-about 99%, or about 80-about 99% based on the elastomerics of propylene.In some embodiments, about 60-97% triad tacticity can should be had based on the elastomerics of propylene.

Elastomerics based on propylene has about 80J/g or less, preferably about 70J/g or less, about 50J/g or less, or about 35J/g or less melting heat (" H _f") (it is measured by DSC).Should can have lower limit based on the elastomerics of propylene is about 0.5J/g, about 1J/g, or the H of about 5J/g _f.Such as, H _fvalue can from 1.0,1.5,3.0,4.0,6.0 or 7.0J/g to 30,35,40,50,60,70,75 or 80J/g.

Elastomerics based on propylene can have (according to DSC step measurements as herein described) is about 2-about 65%, preferably about 0.5-about 40%, preferably about 1-about 30%, and the percent crvstallinity of the more preferably from about isotactic polyprophlene of 5-about 35%.The maximum of the heat energy of propylene (i.e. 100% degree of crystallinity) is estimated as 189J/g.In some embodiments, multipolymer has lower than 40%, about 0.25-about 25%, or the degree of crystallinity of isotactic polyprophlene in about 0.5-about 22% scope.Should can to have lower limit be about 4 or about 6 upper limits is the Tacticity Index m/r of about 8 or about 10 or about 12 based on elastomeric embodiment of propylene.In some embodiments, isotacticity index should be had based on the elastomerics of propylene and be greater than 0%, or the upper limit is about 50% or about 25%, and lower limit is in the scope of about 3% or about 10%.

In some embodiments, reduce the elastomeric degree of crystallinity based on propylene by the copolymerization of propylene and one or more comonomers limited amount, described comonomer is selected from: ethene, C _4-20alpha-olefin, and polyenoid.In these multipolymers, being present in this elastomeric amount deriving from the unit of propylene based on propylene is be about 95wt%, about 94wt%, about 92wt%, about 90wt% based on the elastomeric upper limit of propylene, or about 85wt%, 60wt%, about 65wt%, about 70wt%, about 75wt%, about 80wt%, about 84wt% is about to lower limit, or the scope of about 85wt%.

Optional polyenoid can be any hydrocarbon structure with at least two unsaturated link(age)s, and wherein said unsaturated link(age) one of is at least easily incorporated to polymkeric substance.Such as, optional polyenoid can be selected from straight chain acyclic alkene, such as Isosorbide-5-Nitrae-hexadiene and 1,6-octadiene, branched-chain acyclic alkene, such as 5-methyl isophthalic acid, 4-hexadiene, 3,7-dimethyl-1,6-octadiene, and 3,7-dimethyl-1,7-octadiene, monocycle alicyclic olefin, such as 1，4-cyclohexadiene, 1,5-cyclooctadiene, and 1,7-ring 12 carbon diene, the many rings of many rings are alicyclic to be condensed and bridged ring alkene, such as tetrahydro-indenes, norbornadiene, methyl-tetrahydro indenes, Dicyclopentadiene (DCPD), two rings-(2.2.1)-heptan-2, 5-diene, norbornadiene, alkenyinorbornene, alkylidene norbornylene, cycloalkenyl group norbornylene and cylcoalkyliene norbornenes are (as 5-methylene-2-norbornene, 5-ethidine-2-norbornylene, 5-propenyl-2-norbornylene, 5-isopropylidene-2-norbornylene, 5-(4-cyclopentenyl)-2-norbornylene, 5-cyclohexylidene base-2-norbornylene and 5-vinyl-2-norbornylene), and the alkene that cycloalkenyl group replaces, as vinyl cyclohexene, allyl group tetrahydrobenzene, vinyl cyclooctene, 4 vinyl cyclohexene, allyl cyclodecene, vinyl cyclododecene, Vinylstyrene and Fourth Ring (A-11,12)-5,8-dodecylenes.To be present in this elastomeric scope deriving from the amount of the unit of polyenoid optionally based on propylene be the upper limit is about 15%, about 10%, about 7%, about 5%, about 4.5%, about 3%, about 2.5% or about 1.5%, to lower limit be about 0%, about 0.1%, about 0.2%, about 0.3%, about 0.5% or about 1%, based on the described elastomeric gross weight based on propylene.In a preferred embodiment, should based on the elastomerics of propylene not containing any unit (as described herein, " diene ") deriving from diene.

The unimodal melting transition measured by DSC should can be had based on the elastomerics of propylene.In one embodiment, this multipolymer has main peak and changes about 90 DEG C or lower into, changes about 110 DEG C or higher into along with wide end of melting.Peak value " fusing point " (" T _m") be defined as the temperature that maximum heat absorbs in sample fusion range.But this multipolymer can show secondary melting peaks at main peak adjacent, and/or in end of melting transformation place.For the purpose of this disclosure, this secondary melting peaks is considered as single fusing point together, and wherein climax is considered to the fusing point of this propylene-ethylene polymer, wherein the highlyest in these peaks is considered to this elastomeric T based on propylene _m.T should can be had based on the elastomerics of propylene _mfor about 110 DEG C or lower, about 105 DEG C or lower, about 100 DEG C or lower, about 90 DEG C or lower, about 80 DEG C or lower, or about 70 DEG C or lower.In one embodiment, T should be had based on the elastomerics of propylene _mfor about 25 DEG C of-Yue 105 DEG C, preferably about 60 DEG C of-Yue 105 DEG C, about 70 DEG C of-Yue 105 DEG C, or about 90 DEG C of-Yue 105 DEG C.

Should can have about 0.850-based on the elastomerics of propylene and be about 0.900g/cm ³, preferably about 0.860-is about 0.880g/cm ³density, it is at room temperature measured by ASTM D1505.

(it is determined at 230 DEG C of 2.16kg by ASTM D1238) MFR at least about 2g/10min should can be had based on the elastomerics of propylene.In one embodiment, should have about 2-based on the elastomerics of propylene and be about 20g/10min, about 2-is about 10g/10min, or about 2-is about the MFR of 5g/10min.

Can should have lower than about 2000% based on the elastomerics of propylene, lower than about 1000%, or lower than about 800% elongation at break, it is measured by ASTM D412.

Should can have for about 5,000-about 5,000,000g/ rub based on elastomerics of propylene, preferably about 10,000-about 1,000,000g/ rub, and more preferably from about 50,000-about 400,000g/ weight-average molecular weight (M rubbed _w); For about 2,500-about 250,000g/ rub, preferably about 10,000-about 250,000g/ rub, and more preferably from about 25,000-about 250,000g/ number-average molecular weight (M rubbed _n); And/or be about 10,000-about 7,000,000g/ to rub, preferably about 80,000-about 700,000g/ rub, and more preferably from about 100,000-about 500,000g/ z-average molecular weight (M rubbed _z).About 1.5-about 20 should can be had, or about 1.5-about 15, preferably an about 1.5-about 5, and a more preferably from about 1.8-about 3 based on elastomerics of propylene, and the molecular weight distribution (" MWD ") of most preferably from about 1.8-about 2.5.

Preferably can buy with following trade(brand)name based on the elastomerics of propylene: VISTAMAXX ^tM(ExxonMobil Chemical Company, Houston, TX, USA), VERSIFY ^tM(The Dow Chemical Company, Midland, Michigan, USA), TAFMER ^tMxM or NOTIO ^tMsome trade mark of (Mitsui Company, Japan), and SOFTEL ^tMsome trade mark of (the Basell Polyolefins of Holland).The elastomerics based on propylene being applicable to the commercialization of the specific trade mark of the present invention can be measured by the method that this area is common easily.

Composition of the present invention, such as, masterbatch, can comprise the elastomerics based on propylene that one or more are different, that is, based on propylene elastomerics each there is one or more different performances, such as different comonomers or co-monomer content.The multiple elastomeric this combination based on propylene all within the scope of the invention.

In some embodiments, the elastomerics based on propylene is the elastomerics comprising propylene-degree of crystallinity, and the fusing point measured by DSC is equal to or less than 105 DEG C, and melting heat is about 30J/g for about 5J/g-.The amount that this unit deriving from propylene is about 90wt% with about 80-exists, based on the described elastomeric gross weight based on propylene.This unit deriving from ethene is about 18wt% with about 9-, such as, the amount of about 9, about 9.5, about 10, about 10.5, about 11, about 11.5, about 12, about 12.5, about 13, about 13.5, about 14, about 14.5, about 15, about 15.5, about 16, about 16.5, about 17, about 17.5, about 18wt% exists, based on the described elastomeric gross weight based on propylene.

Elastomerics based on propylene can comprise multipolymer, and described multipolymer is according to WO02/36651, and U.S. Patent No. 6,992,158, and/or the step preparation described in WO00/01745, its content is incorporated to herein by reference.Producing the preferred method of this elastomerics based on propylene can in U.S. Patent No. 7,232,871 and 6, and 881, find in 800, its content is incorporated to herein by reference.The present invention is not limited to prepare any specific polymerization process of this elastomerics based on propylene, and polymerization process is not limited to the reaction vessel of particular variety.

The exemplary polyolefin elastomer that the present invention uses comprises the elastomerics based on ethene, and it has one or more following character:

(1) ethylene content is about 90wt% for about 60wt%-, and preferably about 65wt%-is about 85wt%, and preferably about 65wt%-is about 80wt%, and preferably about 65wt%-is about 75wt%;

(2) ethylene content is about 96mol% for about 80mol%-, and preferably about 82mol%-is about 92mol%, and preferably about 82mol%-is about 88mol%, and preferably about 84mol%-is about 86mol%;

(3) propylene content is about 20wt% for about 10wt%-;

(4) 1-butylene content is about 15wt% or more, preferably about 20wt% or more, preferably about 25wt% or more;

(5) 1-ahexene content is about 20wt% or more, preferably about 25wt% or more, preferably about 30wt% or more;

(6) 1-octene content is about 25wt% or more, preferably about 30wt% or more, preferably about 35wt% or more;

(7) density is about 0.9g/cm ³or lower, preferred 0.89g/cm ³or lower, preferred 0.88g/cm ³or lower, preferred 0.87g/cm ³or lower, preferred 0.86g/cm ³or lower, preferred 0.83g/cm ³or more, preferred 0.84g/cm ³or more, preferred 0.85g/cm ³or more, preferred 0.855g/cm ³or more, preferably about 0.83g/cm ³-Yue 0.9g/cm ³, preferably about 0.85g/cm ³-Yue 0.89g/cm ³, preferably about 0.85g/cm ³-Yue 0.88g/cm ³, or preferred about 0.85g/cm ³-Yue 0.87g/cm ³;

(8) melting heat (H _f) be about 90J/g or lower, preferably about 70J/g or lower, preferably about 50J/g or lower, preferably about 30J/g or lower, preferably about 10J/g-70J/g, preferably about 10J/g-is about 50J/g, and preferably about 10J/g-is about 30J/g;

(9) degree of crystallinity is about 40% or lower, preferably about 30% or lower, preferably about 20% or lower, and at least about 5%, preferably about 5%-about 30%, preferably about 5%-about 20%;

(10) fusing point (T _m, peak first melt) and be about 100 DEG C or lower, preferably about 90 DEG C or lower, preferably about 80 DEG C or lower, preferably about 70 DEG C or lower, preferably about 60 DEG C or lower, preferably about 50 DEG C or lower;

(11) Tc (T _c, peak) and be about 90 DEG C or lower, preferably about 80 DEG C or lower, preferably about 70 DEG C or lower, preferably about 60 DEG C or lower, preferably about 50 DEG C or lower, preferably about 40 DEG C or lower;

(12) second-order transition temperature (T _g) be about-20 DEG C or lower, preferably about-30 DEG C or lower, preferably about-40 DEG C or lower;

(13) M _wfor about 30,000g/mol-about 2,000,000g/mol, preferably about 50,000g/mol-about 1,000,000g/mol, preferably about 90,000g/mol-about 500,000g/mol;

(14) M _w/ M _nfor about 1-about 40, preferably about 1.4-about 20, preferably about 1.6-about 10, preferably about 1.8-about 3.5, preferably about 1.8-about 2.5;

(15) branch index (g') is about 0.9 or higher, preferably about 0.95 or higher, preferably about 0.99 or higher; With

(16) melt index (MI) is about 100g/10min for about 0.1g/10min-, and preferably about 0.3g/10min-is about 60g/10min, and preferably about 0.5g/10min-is about 40g/10min, and preferably about 0.7g/10min-is about 20g/10min.

In some preferred implementation, the elastomerics based on ethene comprises one or more C of at least 30wt% _4-20olefin comonomer, such as, 1-butylene, 1-hexene, and/or 1-octene.In some embodiments, the elastomerics based on ethene can be random copolymers, statistical copolymer, segmented copolymer, or their blend.The present invention is not limited to prepare any specific polymerization process of this elastomerics based on ethene.In certain preferred implementation, use metallocene catalyst system production based on the elastomerics of ethene.

The elastomerics based on ethene that the present invention uses comprises those that can buy with following trade(brand)name: EXACT ^tM(Exxon Mobil Chemical Company, Houston, TX, USA), ENGAGE ^tMand INFUSE ^tM(The Dow Chemical Company, Midland, Michigan, USA), and TAFMER ^tMsome trade mark of (Mitsui Company, Japan).

filler

Composition of the present invention optionally comprises one or more fillers, such as calcium carbonate, clay, mica, silicon-dioxide and silicate, talcum, titanium dioxide, starch, and other filler such as wood powder, and carbon black.This filler component the level of 150-350phr can be present in this EPDM, such as 180-320phr.In some embodiments, two or more carbon blacks combinationally use, and such as, Regal 85 is the carbon blacks with multiple granularity.Combination also comprises those of the carbon black changed based on surface area.Similarly, also using the different types of carbon black through different treatment.Such as, through chemical treatment carbon black can be combined without chemically treated carbon black.This carbon black can typically with 120-280phr, and the level of preferred 150-250phr is present in this EPDM.

In one or more embodiments, composition of the present invention can comprise one or more exfoliate clays.Exfoliate clay (being also referred to as " nanoclay ") is common, and their characteristic, preparation and be disclosed in following patent with the blended method of polymkeric substance, such as, JP2000-109635,2000-109605,11310643; DE 19726278; WO 98/53000; U.S. Patent No. 5,091,462,4,431,755,4,472,538, and 5,910,523.Expandable layered clay material can comprise layered silicate that is natural or synthesis, especially smectic clays, such as polynite, nontronite, beidellite, synthesis of clay, saponite, hectorite, saponite, sauconite, wheat hydrocarbon silicon sodium stone, fibrous morphology crystals, rich magnesium montmorillonite etc., and vermiculite, halloysite, aluminate oxide, hydrotalcite etc.These laminated claies comprise particle usually, and it contains and has or multiple silicate platelets of thickness, to be bonded together and containing the tradable cat ions existed at interlayer surface as Na ⁺, Ca ^{+ 2}, K ⁺, or Mg ^{+ 2}.

This laminated clay carries out intercalation by organic molecule (swelling agent) process and peels off, and described organic molecule can carry out ion exchange reaction at positively charged ion under laminated silicate interlayer surface exists.Suitable swelling agent comprises cats product, such as ammonium, alkylamine or alkylammonium (primary, secondary, uncle and Ji), fat fat race's Phosphonium or sulfonium derivative, aromatic series or aromatic yl aliphat amine, phosphine and sulfide.The amine compound (or corresponding ammonium ion) expected has structure R ₁r ₂r ₃those of N, wherein R ₁, R ₂, and R ₃c ₁-C ₂₀alkyl or alkene, they can be identical or different.In one or more embodiments, exfoliant is so-called long chain tertiary amine, wherein at least R ₁c ₁₄-C ₂₀alkyl or alkene.

Another kind of swelling agent comprises those that can be covalently bound to interlayer surface.These structures comprising polysilane are-Si (R ') ₂r ², wherein R ' occurs it being identical or different at every turn, and is selected from alkyl, alkoxyl group or TMOS, and R ²for the organic free radical of the matrix polymer compatible with matrix material.

Other suitable swelling agent comprises protonated amino acid containing 2-30 carbon atom and salt, such as 12 amino dodecanoic acid, ε-caprolactam and similar material.The technique of suitable swelling agent and intercalation layered silicate in U.S. Patent No. 4,472,538,4,810,734,4,889,885, and discloses in WO92/02582.

Clay or the clay peeled off can be incorporated in composition with the amount enough improving composition mechanical property or barrier property, such as, and tensile strength or air/oxygen permeability to gas.Amount is usually in the scope of 0.5-15wt%; Or the scope of 1-10wt%; Or the scope of 1-5wt%, based on the polymer content of described composition.Express with the number of every cental rubber, this clay or the clay peeled off can exist by 1-30phr; Or exist with 3-20phr.In one or more embodiments, this clay peeled off is the clay of alkylamine-peel off.

Carbon black is produced by organism incomplete combustion.The manufacture of carbon black has two kinds of main production technique: oil oven technique and thermal process.In oil oven technique, fuel burns to produce fine carbon powder when air excess.There is several different production part: reaction; Filter and be separated; Granulation; And drying.Thermal process is similar, but it is continuous print stove technique.American Society for testing and materials (ASTM) establishes carbon black taxonomic hierarchies based on granularity and surface oxidation, ASTM D1765.Surface oxidation degree affects the set time of black filled rubber compound." N " represents conventional solidified carbon black and " S " refers to low solidification carbon black.After N or S, the first number determination granularity of three figure place suffix and remaining two numbers are assigned arbitrarily.

The enhancing characteristic of carbon black in rubber is attributable to the surface chemistry of size, shape and aggregation structure, shape and aggregate structure surface chemistry, and described aggregate structure is by substantially forming in primary particles that is spherical and chemical bonding each other.Two key properties of carbon black are surface-area and structure.Surface-area oppositely depends on the size of primary particles, and is the tolerance of the useful area of polymer physics effect.Surface-area is 10-140m ²the scope of/g, along with thermal black have by ASTM D4820 measure based on N2 adsorption (N ₂sA) Schwellenwert.Surface-area is also by CETRIMIDE POWDER (CTAB) absorptiometry.The structure of carbon black depends on the size of the primary granule in these aggregates and agglomerating (grouping).Primary granule in aggregate is more, and the structure of carbon black is higher, and this is owing to the more complicated shape of carbon black and void volume (porousness).Structure is at 35-130cm ³the scope of/100gm, it is by dibutyl phthalate (DBP) the oily absorptiometry of ASTM D2414.The trade mark of carbon black is used to describe in the scope of Rubber Technology, 59-85 page (1995) N110-N990.More desirably, the embodiment that can be applicable to the carbon black of such as tire tread is the N229 provided in ASTM (D3037, D1510, and D3765), N351, N339, N220, N234 and N110.The embodiment being applied to the carbon black of such as tyre wall is N330, N351, N550, N650, N660, and N762.The embodiment being applied to the carbon black of such as liner or the inner tube of a tyre is N550, N650, N660, N762, N990 etc.

Composition can comprise carbon black, and it has lower than 35m ²the surface-area of/g and lower than 90cm ³the dibutyl phthalate of/100gm.Suitable carbon black also can have lower limit and be about 7m ²/ g, 10m ²/ g, or 15m ²/ g is about 25m to the upper limit ²/ g, 30m ²/ g or 35m ²the scope of the surface-area of/g.Suitable carbon black also can have lower limit and be about 7m ²/ g, 10m ²/ g, or 23m ²/ g is about 25m to the upper limit ²/ g, 26m ²/ g, or 28m ²the scope of the surface-area of/g.Suitable carbon black also can have at least 25cm ³/ 100gm and lower than 90cm ³/ 100gm, lower than 80cm ³/ 100gm, lower than 70cm ³/ 100gm, lower than 65cm ³/ 100gm, or lower than 60cm ³the dibutyl phthalate oil of/100gm absorbs.The dibutyl phthalate oil absorption of carbon black also can be lower limit and is about 30cm ³/ 100gm, 35cm ³/ 100gm, or 40cm ³/ 100gm is about 60cm to the upper limit ³/ 100gm, 70cm ³/ 100gm, or 80cm ³the scope of/100gm.Suitable carbon black can include but not limited to N550, N762, N774, N907, N990, Regal 85, and Regal 90.

processing aid

Composition of the present invention optionally comprises one or more processing aids.Suitable processing aid can include but not limited to, softening agent, tackifier, extender, chemical amendment, levelling agent and peptizer (such as mercaptan), oil and vulcanized vegetable oil, mineral oil, paraffin oil, Polybutene oil, naphthenic oil, perfume oil, wax, resin, rosin, or other has compared with paraffin or mineral wet goods low pour point, synthetic fluid etc. compared with low emission.The example of some business processing aids is SUNDEX ^tM(Sun Chemicals) and FLEXON ^tM(ExxonMobil Chemical Company).

Preferred softening agent comprises polyalphaolefin (PAO), and the base-material of high purity hydrocarbon fluid composition (HPFC) and Group III, such as, describe those in WO2004/014998.Preferred PAO comprises the oligopolymer of decene and the co-oligomer of decene and dodecylene.Preferred PAO can buy with following trade(brand)name: SuperSyn ^tM, SpectraSyn ^tMpAO, and ELEVAST ^tMexxonMobil Chemical Company.

Suitable Polybutene oil has the M lower than 15,000g/mol _n.Preferred polybutene oil plant also comprises the homopolymer or multipolymer that derive from and have 3-8 carbon atom, the preferably unit of the alkene of 4-6 carbon atom.In still another embodiment, polybutene is C ₄the homopolymer of raffinate or multipolymer.Preferred low-molecular weight polymer is called that the embodiment of " polybutene " polymkeric substance describes in the following documents, such as, Synthetic Lubricants and High-Performance Functional Fluids, 357-392 page (Leslie R.Rudnick & Ronald L.Shubkin, ed., Marcel Dekker1999) (being hereinafter " polybutene processing oil " or " polybutene ").

In one or more embodiments, Polybutene oil can be multipolymer, and it at least comprises the unit of derived from isobutylene, and optionally derives from the unit of 1-butylene, and/or derives from the unit of 2-butylene.In one or more embodiments, polybutene is the homopolymer of iso-butylene, or the multipolymer of iso-butylene and 1-butylene or 2-butylene, or the terpolymer of iso-butylene and 1-butylene and 2-butylene, wherein the unit of derived from isobutylene accounts for the 40-100wt% of multipolymer, the unit deriving from 1-butylene accounts for the 0-40wt% of multipolymer, and the unit deriving from 2-butylene accounts for the 0-40wt% of multipolymer.In one or more embodiments, polybutene is multipolymer or terpolymer, wherein the unit of derived from isobutylene accounts for the 40-99wt% of multipolymer, and the unit deriving from 1-butylene accounts for the 2-40wt% of multipolymer, and the unit deriving from 2-butylene accounts for the 0-30wt% of multipolymer.In still another embodiment, polybutene is the terpolymer of Unit three, and wherein the unit of derived from isobutylene accounts for the 40-96wt% of multipolymer, and the unit deriving from 1-butylene accounts for the 2-40wt% of multipolymer, and the unit deriving from 2-butylene accounts for the 2-20wt% of multipolymer.In still another embodiment, polybutene is homopolymer or the multipolymer of iso-butylene and 1-butylene, and wherein the unit of derived from isobutylene accounts for the 65-100wt% of homopolymer or multipolymer, and the unit deriving from 1-butylene accounts for the 0-35wt% of multipolymer.

Polybutene processing oil typically has lower than 10,000g/mol, lower than 8,000g/mol, or lower than the number-average molecular weight (M of 6,000g/mol _n).In one or more embodiments, Polybutene oil has and is greater than 400g/mol, and is greater than 700g/mol, or is greater than the number-average molecular weight of 900g/mol.It can be preferred embodiment the combination of any lower limit and any upper limit herein.Such as, describe in the embodiment of polybutene at one or more, described polybutene has 400g/mol-10,000g/mol, and the number-average molecular weight of 700g/mol-8,000g/mol.The useful range of viscosities of polybutene processing oil is 10-6,000cSt (centistoke) at 100 DEG C, or at 100 DEG C 35-5,000cSt, or be greater than 35cSt at 100 DEG C, or be greater than 100cSt at 100 DEG C.

Composition of the present invention can comprise the polybutene as mixture of one or more kinds, itself or blended before adding elastomerics to, or blended together with elastomerics.The amount of polybutene processing oil mixture and characteristic (such as viscosity, M _ndeng) also alterable to be to realize some other viscosity or molecular weight.By this way, the physicals of composition can be controlled.More specifically, phrase " polybutene processing oil ", or " polybutene processing oil (plural number) " comprises the viscosity of any expectation for obtaining scope regulation as herein disclosed or the single oil plant of molecular weight (or other character) or the composition of two or more oil plants.

In one embodiment, treated oil can be present in composition with the 60-170phr of EPDM, is 70-160phr in another embodiment, and is 85-145phr in still another embodiment.

solidifying agent and accelerator

Composition of the present invention optionally comprises and is generally used for elastomer blend one or more other component and additives, such as pigment, accelerator, crosslinked and solidify material, antioxidant, antiozonidate etc.

Crosslinked and solidifying agent comprises sulphur, zinc oxide and lipid acid.Usually, polymer composition is molecule crosslinked by adding solidifying agent, and such as sulphur, metal oxide (i.e. zinc oxide), organometallic compound, radical initiator etc., with post-heating.Especially, be below conventional solidified dose that will work in the present invention: ZnO, CaO, MgO, Al ₂o ₃, CrO ₃, FeO, Fe ₂o ₃, and NiO.These metal oxides can with respective metal stearate complex (such as Zn (stearic acid) ₂, Ca (stearic acid) ₂, Mg (stearic acid) ₂, and Al (stearic acid) ₃), or with stearic acid and sulphur compound conbined usage.This method being used for the sulfuration of natural rubber rubber blend also can be applicable to composition of the present invention.

Accelerator comprises amine, guanidine class, Thiourea, thiazoles, thiurams, sulfenamide, sulfenamide class, thiocarbamates, xanthate class etc.By a certain amount of accelerator being joined the acceleration realizing curing in composition.The mechanism comprising the accelerated cure of the composition of EPDM relates to and interacting in solidifying agent, accelerator, complexity between activator and polymkeric substance.Ideally, all available solidifying agent are consumed in connection two polymer chains with the formation of effective cross-link bond of the total intensity of enhancing polymeric matrix.Many accelerators are known in the art, and include but not limited to following compound: stearic acid, vulkacit D (DPG), tetramethyl-thiuram disulfide (TMTD), bis-pentamethylenethiuram tetrasulfide (DPTT), 4, 4 '-dithio morpholine (DTDM), tetrabutylthiuram disulfide (TBTD), benzothiazyl disulfide (MBTS), hexa-methylene-1, the two sodothiol dihydrate of 6-, 2-(morpholinothio) benzothiazole (MBS or MOR), the blend (MOR90) of 90%MOR and 10%MBTS, N tert butyl benzothiazole 2 sulfenamide (TBBS), with N-oxydiethylene thiocarbamoyl-N-oxydiethylene sulphenamide (OTOS), 2 ethyl hexanoic acid zinc (ZEH), N, N'-diethyl thiourea.

Curing system comprises described above impelling or those components of influence elastane body solidification, such as metal, accelerator, sulphur, and the reagent that other this area is common, and described above.In one or more embodiments described, sulfur curing system comprises sulphur and uses together with composition of the present invention with sulfur donor, and wherein relative to EPDM, sulphur is with lower than 5phr, amount preferably lower than 61phr exists, and at least one sulfur donor exists with the amount lower than 5phr relative to EPDM.In a preferred embodiment, sulfur donor to comprise in TMTD and DPTT one of at least.

character

An object of the present invention is to improve rheological property, but just effectively lose other character, such as tensile break strength and compressive set, this is favourable in the application of such as extruded product.

In one embodiment, in composition of the present invention, polyolefin elastomer is with preferred lower than about 100phr lower than about 150 relative to EPDM, more preferably less than about 50phr, most preferably lower than about 20phr, such as, about 19phr, about 18phr, about 17phr, about 16phr, about 15phr, about 14phr, about 13phr, about 12phr, about 11phr, about 10phr, about 9phr, about 8phr, about 7phr, about 6phr, about 5phr, about 4phr, about 3phr, about 2phr, the amount of about 1phr exists, composition of the present invention has than not containing described polyolefin elastomer, but mooney viscosity [ML (1+4) 100 DEG C] the low about 0-about 15 of the composition that other side is identical with regard to composition, about 0-about 10, or the mooney viscosity of about 0-about 5 [ML (1+4) 100 DEG C].As described herein, composition " not containing described polyolefin elastomer but with regard to composition other side identical " refer to that referred to composition has the identical composition with present composition same ratio (phr), except the polyolefin elastomer in the present composition by the EPDM in referred to composition substitute (see, such as, contrast 1 and compare embodiment 1-3 and 1a-3a).Preferably, this polyolefin elastomer comprises to derive from the unit of propylene at least about 60wt% and about 5-is about the elastomerics based on propylene that 25wt% derives from the unit of ethene, based on the described elastomeric gross weight based on propylene, the wherein said elastomerics based on propylene has the melting heat lower than about 80J/g.Mooney viscosity, as described herein, can according to ASTM D1646, at 100 DEG C, the form of ML (1+4) is measured, except as otherwise noted.

In another embodiment, the tensile break strength that composition described herein has than containing described Polyolefin elastomer composition is low to moderate many about 15%, preferably at the most about 10%, more preferably at the most about 5% tensile break strength, but it is compositionally identical, and it is measured by ISO 37 at 23 DEG C.

In still another embodiment, composition described herein has than the compressive set height at the most about 30% under 25% flexure not containing the composition of described polyolefin elastomer, preferably at the most about 20%, more preferably at the most about 10% compressive set, but it is compositionally identical, it is measured by ISO 815A in differing temps and time point.

prepare the method for composition

Additionally provide the method preparing the present composition.In one embodiment, the present invention includes the method preparing composition, it comprises the following steps: (a) by (i) mooney viscosity [ML (1+4) 125 DEG C] is the EPDM of about 25-about 300 and the ethylene content of this EPDM is at least about 60wt% and (ii) polyolefin elastomer combines, and (b) forms described composition.In a preferred embodiment, this polyolefin elastomer is comprise to derive from the unit of propylene at least about 60wt% and about 5-is about the elastomerics based on propylene that 25wt% derives from the unit of ethene, based on the described elastomeric total weight based on propylene, the wherein said elastomerics based on propylene has the melting heat lower than about 80J/g.Preferably, said composition has the mooney viscosity [ML (1+4) 100 DEG C] than the low about 0-about 15 of the mooney viscosity [ML (1+4) 100 DEG C] of the composition that other side is identical not containing described polyolefin elastomer but with regard to composition.

By at any suitable mixing device (such as Banbury ^tMmixing tank, Brabender ^tMmixing tank, or preferably mixing tank/forcing machine or mill) in conjunction with the component of the present composition to mix the component of the present composition.Carry out at the temperature of the fusing point of the elastomerics that mixing can use in far above composition and/or rubber, allow graphite and/or clay exfoliation with enough speed and become uneven dispersion in the polymer to form composition.

The scope of suitable mixing rate can be about 10RPM-and is about 100RPM.In one or more embodiments, described mixing rate can be about 10RPM, about 15RPM, about 20RPM, about 25RPM, about 30RPM, about 35RPM, about 40RPM, about 45RPM, about 50RPM, about 55RPM, about 60RPM, about 65RPM, about 70RPM, about 75RPM, about 80RPM, about 85RPM, about 90RPM, about 95RMP and about 100RPM.

In one or more embodiments, the scope of mixing temperature can be about 40 DEG C of-Yue 340 DEG C.In one or more embodiments, the scope of mixing temperature can be about 80 DEG C-300 DEG C.In one or more embodiments, the scope of mixing temperature can be lower limit about 30 DEG C, 40 DEG C, or 50 DEG C to the upper limit about 70 DEG C, 170 DEG C, or 340 DEG C.In one or more embodiments, the scope of mixing temperature can be lower limit about 80 DEG C, 90 DEG C or 100 DEG C to the upper limit about 120 DEG C, 250 DEG C, or 340 DEG C.In one or more embodiments, the scope of mixing temperature can be lower limit about 85 DEG C, 100 DEG C, or 115 DEG C to the upper limit about 270 DEG C, 300 DEG C or 340 DEG C.

In at least one embodiment, in the speed being significantly greater than 20-90 second, or until temperature is from 40 DEG C to 60 DEG C, one or more elastomericss of 70%-100% can be mixed.Then, the carbon black more than about 1/2 can be added, and remaining elastomerics (if any) is in mixing tank, and mixes sustainable, until temperature is from 90 DEG C to 150 DEG C.Then, remaining carbon black and other filler can be added, and treated oil, and mix sustainable until temperature is from 140 DEG C to 190 DEG C.By completing final product mix on a mill until in flakes and allowing when adding solidifying agent to be cooled to 60 DEG C-100 DEG C.

application

The goods using method of the present invention to produce and the goods comprising composition of the present invention are contained in the present invention.The example of goods includes but not limited to, extruded product, such as weather strip for automobile, non-vehicle sealed strip, architectural shape etc.; Moulded product, such as strip of paper used for sealing, packing ring etc.; Flexible pipe, such as air hose, hot flexible pipe, rubber hose, industrial hose etc.; Roofing board; Film; Or cable jacket etc.

The method reducing composition mooney viscosity is also contained in the present invention, it comprises the following steps: (a) by (i) mooney viscosity [ML (1+4) 125 DEG C] is the ethylene-propylene-diene terpolymer of about 25-about 300 and the ethylene content of this ethylene-propylene-diene terpolymer is at least about 60wt% with (ii) polyolefin elastomer is combined, (b) described composition is formed, preferred described composition is than not containing described polyolefin elastomer, but the mooney viscosity [ML (1+4) 100 DEG C] of mooney viscosity [ML (1+4) 100 DEG C] the low about 0-about 15 of the composition that other side is identical with regard to composition.In a preferred embodiment, polyolefin elastomer comprises to derive from the unit of propylene at least about 60wt% and about 5-is about the elastomerics based on propylene that 25wt% derives from the unit of ethene, based on the described elastomeric total weight based on propylene, the wherein said elastomerics based on propylene has the melting heat lower than about 80J/g.

Other embodiment can comprise further:

1. a composition, comprises:

A () mooney viscosity [ML (1+4) 125 DEG C] is the ethylene-propylene-diene terpolymer (EPDM) of about 25-about 300 and the ethylene content of this EPDM is at least about 60wt%; With

(b) polyolefin elastomer.

2. the composition described in paragraph 1, the amount that wherein said EPDM is about 50wt% with the about 10-of said composition exists.

3. the composition described in paragraph 1 or 2, wherein said polyolefin elastomer is comprise to derive from the unit of propylene at least about 60wt% and about 5-is about the elastomerics based on propylene that 25wt% derives from the unit of ethene, based on the described elastomeric total weight based on propylene, the wherein said elastomerics based on propylene has the melting heat lower than about 80J/g.

4. the composition described in paragraph 3, the wherein said elastomerics based on propylene has the MFR (ASTM D1238,2.16kg, 230 DEG C) that about 2g/10min-is about 20g/10min.

5. the composition described in paragraph 1-4 arbitrary section, wherein said polyolefin elastomer is to exist lower than the amount of about 150phr relative to EPDM.

6. the composition described in paragraph 1-5 arbitrary section, wherein said polyolefin elastomer is to exist lower than the amount of about 100phr relative to EPDM.

7. the composition described in paragraph 1-6 arbitrary section, wherein said polyolefin elastomer is to exist lower than the amount of about 50phr relative to EPDM.

8. the composition described in paragraph 1-7 arbitrary section, wherein said polyolefin elastomer is to exist lower than the amount of about 20phr relative to EPDM.

9. the composition described in paragraph 1-8 arbitrary section, it to comprise in filler, processing aid, solidifying agent and accelerator one of at least further.

10. the composition described in paragraph 1-9 arbitrary section, it comprises sulphur further.

Composition described in 11. paragraph 1-10 arbitrary section, wherein said sulphur is to exist lower than the amount of 5phr relative to EPDM.

Composition described in 12. paragraph 1-11 arbitrary section, it comprises sulfur donor further.

Composition described in 13. paragraphs 12, wherein said sulfur donor comprises tetramethyl-thiuram disulfide and bis-pentamethylenethiuram tetrasulfide one of at least.

Composition described in 14. paragraphs 12 or 13, wherein said sulfur donor is to exist lower than the amount of 5phr relative to EPDM.

Composition described in 15. paragraph 1-14 arbitrary section, the mooney viscosity [ML (1+4) 100 DEG C] of wherein said composition about 0-about 15 lower than not containing described polyolefin elastomer but the compositionally mooney viscosity [ML (1+4) 100 DEG C] of the composition that other side is identical.

Composition described in 16. paragraph 1-15 arbitrary section, wherein said composition have following character one of at least: (i) tensile break strength is low to moderate many about 15% than not containing described polyolefin elastomer but the compositionally tensile break strength of the composition that other side is identical; (ii) compressive set uprises at the most about 30% than not containing described polyolefin elastomer but the compositionally compressed shape of the composition that other side is identical.

17. 1 kinds of methods preparing composition, it comprises the following steps:

(i) is had EPDM that mooney viscosity [ML (1+4) 125 DEG C] is about 25-about 300 and the ethylene content of this EPDM is at least about 60wt% and (ii) polyolefin elastomer combines, and

Form described composition.

Method described in 18. paragraphs 17, wherein said polyolefin elastomer is comprise to derive from the unit of propylene at least about 60wt% and about 5-is about the elastomerics based on propylene that 25wt% derives from the unit of ethene, based on the described elastomeric total weight based on propylene, the wherein said elastomerics based on propylene has the melting heat lower than about 80J/g.

Method described in 19. paragraphs 17 or 18, comprises the step making described composition form goods further.

Method described in 20. paragraph 17-19 arbitrary section, the mooney viscosity [ML (1+4) 100 DEG C] of wherein said composition about 0-about 15 lower than not containing described polyolefin elastomer but the compositionally mooney viscosity [ML (1+4) 100 DEG C] of the composition that other side is identical.

Method described in 21. paragraph 17-20 arbitrary section, wherein said composition have following character one of at least: (i) tensile break strength fewer than not containing described polyolefin elastomer but the compositionally tensile break strength of the composition that other side is identical at the most about 15%; (ii) compressive set uprises at the most about 30% than not containing described polyolefin elastomer but the compositionally compressed shape of the composition that other side is identical.

22. 1 kinds of goods, it comprises the composition described in paragraph 1-16 arbitrary section.

Goods described in 23. paragraphs 19, wherein said goods are extruded product, moulded product, flexible pipe, sheet material, film or overcoat.

24. 1 kinds of compositions, it comprises:

A mooney viscosity [ML (1+4) 125 DEG C] that () amount is about 25wt% for the about 20-of described composition is the ethylene-propylene-diene terpolymer that about 60-is about 90wt%, and the ethylene content of this ethylene-propylene-diene terpolymer is about 75wt% for about 60-;

B () is relative to described ethylene-propylene-diene terpolymer, amount is the elastomerics based on propylene that about 5-is about 15phr, described elastomerics comprises at least 60wt% propylene and about 5-and is about 25wt% ethene, based on the described elastomeric total weight based on propylene, the wherein said elastomerics based on propylene has the melting heat lower than about 80J/g;

C (), relative to described ethylene-propylene-diene terpolymer, measures the sulphur into about 0.5phr;

D (), relative to described ethylene-propylene-diene terpolymer, measures the tetramethyl-thiuram disulfide into about 1phr; With

E (), relative to described ethylene-propylene-diene terpolymer, measures the bis-pentamethylenethiuram tetrasulfide into about 1.5phr.

25. 1 kinds of methods reducing the mooney viscosity of composition, comprise the following steps:

By (i) mooney viscosity [ML (1+4) 125 DEG C] be the ethylene-propylene-diene terpolymer of about 25-about 300 and the ethylene content of this ethylene-propylene-diene terpolymer is at least about 60wt% with (ii) polyolefin elastomer is combined, and

Form described composition.

Method described in 26. paragraphs 25, the described composition wherein formed has the mooney viscosity [ML (1+4) 100 DEG C] than not containing described polyolefin elastomer but the compositionally low about 0-about 15 of the mooney viscosity [ML (1+4) 100 DEG C] of the composition that other side is identical.

Method described in 27. paragraphs 25 or 26, wherein said polyolefin elastic is comprise to derive from the unit of propylene at least about 60wt% and about 5-is about the elastomerics based on propylene that 25wt% derives from the unit of ethene, based on the described elastomeric total weight based on propylene, the wherein said elastomerics based on propylene has the melting heat lower than about 80J/g.

Method described in 28. paragraph 25-27 arbitrary section, wherein said composition have following character one of at least: (i) tensile break strength is not than containing described polyolefin elastomer but the composition tensile break strength that compositionally other side is identical is low to moderate many about 15%; (ii) compressive set uprises at the most about 30% than not containing described polyolefin elastomer but the compositionally compressed shape of the composition that other side is identical.

Embodiment

Discussion before can further describing according to following nonrestrictive embodiment 1 and 2.Embodiment 1 shows the effect of the polyolefin elastomer (such as based on the elastomerics of propylene) comprising the unit deriving from ethene by sample 1-3 and 1a-3a, described polyolefin elastomer is as the component of composition of the present invention comprising 25wt%EPDM.EPDM is replaced by the elastomer portion based on propylene in sample 1-3, however the amount of EPDM in the sample to which 1a-3a keep identical.For sake of comparison, the first comparative example (" contrast 1 ") is provided to comprise 25wt%EPDM but the effect not containing the composition of polyolefin elastomer to illustrate.Embodiment 2 shown by sample 4-6 and 4a-6a comprise the unit deriving from ethene polyolefin elastomer (such as, elastomerics based on propylene) effect, described polyolefin elastomer is as the component of the present composition of EPDM comprising 20wt%.EPDM is replaced by the elastomer portion based on propylene in sample 4-6, but the amount of EPDM keeps identical in sample 4a-6a.For sake of comparison, the second comparative example (" contrast 2 ") is also provided to comprise 20wt%EPDM but the effect not containing the composition of polyolefin elastomer to illustrate.

By in the 3.2L Banbury mixer with tangential rotors, operate under 50rpm, batch mixed prepares each sample, except composition solidifying agent is blended in roller mill.Start-up temperature is 50 DEG C to 70 DEG C.The mixing circulation of masterbatch is undertaken by with following table 1.As described herein, " toppling over " is that feeling the pulse with the finger-tip material is discharged from mixing tank, and " wrench " be carry out the while of lifting plunger mixing to make masterbatch reverse completely.Wrench contribute to being incorporated in add mixing tank to during hang over clay on plunger.

Table 1: masterbatch mixing cycle

Time (min)	Order of addition
		0	EPDM+Vistamaxx ^TM?6102
1'	2/3 carbon black+ZnO
		2'	1/3 carbon+oil plant+CaCO ₃+ other
3'	Wrench-1
		5'	Wrenched for-2 (if needs)
?	Topple at 140 DEG C

Table 2 provides Vistalon ^tM5601 and Vistamaxx ^tMthe typical performance of 6102.

Table 2:Vistalon ^tM5601 and Vistamaxx ^tMthe typical performance of 6102

embodiment 1

List for the preparation of the first comparative example (elastomerics without based on propylene) in following table 3, the component of sample 1-3 and sample 1a-3a and the formula of respective amount.Test sample by pressing mold and use standard test protocols assess.Test sample is at 180 DEG C of solidification 8min.Measure physicals, the remaining and compressive set of such as mooney viscosity [ML (1+4) 100 DEG C], mooney scorch, set time, tensile break strength, tensile strength is under 25% flexure and show in fig. 1-3.

Table 3: the formula (phr) of contrast 1 and sample 1-3 and 1a-3a

Fig. 1 depicts compared with the first comparative example, sample 1-3 and sample 1a-3a mooney viscosity separately [ML (1+4) 100 DEG C] are (Fig. 1 a), mooney scorch, it is expressed as mooney viscosity improves 5 units (T5) time (Fig. 1 b) at 125 DEG C, and reaches the set time (Fig. 1 c) of 90% vulcanization curve (T90) at 180 DEG C.Fig. 2 depicts compared with the first comparative example, the tensile break strength after sample 1-3 and sample 1a-3a is aging separately and tensile strength remaining.Fig. 3 depicts compared with the first comparative example, sample 1-3 and sample 1a-3a each comfortable 25% flexure under (%) (70 DEG C, 22h), (70 DEG C, 168h), (100 DEG C, 72h) and the compressive set of (125 DEG C, 72h).

embodiment 2

List for the preparation of the second comparative example (" contrast 2 ", without polyolefin elastomer) in following table 4, the component of sample 4-6 and sample 4a-6a and the formula of respective amount.Test sample uses standard test protocols assessment.Measure physicals such as mooney viscosity [ML (1+4) 100 DEG C], mooney scorch, set time, tensile break strength, tensile strength remnants and compressive set under 25% flexure, and show in figs. 4-6.

Table 4: the formula (phr) of contrast 2 and sample 4-6 and 4a-6a

Fig. 4 depicts compared with the second comparative example, sample 1-3 and sample 1a-3a mooney viscosity separately [ML (1+4) 100 DEG C] are (Fig. 4 a), mooney scorch, it is expressed as mooney viscosity improves 5 units (T5) time (Fig. 4 b) at 125 DEG C, and reaches the set time (Fig. 4 c) of 90% vulcanization curve (T90) at 180 DEG C.Fig. 2 describes compared with the second comparative example, the tensile break strength after embodiment 1-3 and embodiment 1a-3a is aging separately and tensile strength remaining.Fig. 3 describes compared with the second comparative example, embodiment 1-3 and embodiment 1a-3a each comfortable 25% flexure under (%) (70 DEG C, 22h), (70 DEG C, 168h), (100 DEG C, 72h) and the compressive set of (125 DEG C, 72h).

As shown in figures 1 to 6, polyolefin elastomer joins and comprises in the composition of EPDM, compared with not containing the composition of polyolefin elastomer, mooney viscosity [ML (1+4) 100 DEG C] is reduced about 0-about 15.This allows the mobility of material to increase, therefore make subsequently extrude more easily and more efficient.Mooney scorch and set time also slightly increase.In addition, although observe the tensile break strength and the compressive set of increase that reduce under 25% flexure, both changes, all in very limited scope, imply and significantly not to distinguish with regard to performance loss.

More than define multiple term.For the term used in undefined claim above, pertinent art should give the most broad definition of this term, as described in term reflect at least one printed publication or granted patent.In addition, the all patents quoted herein and patent application, testing sequence (such as ASTM method), to be all introduced into these disclosure contents consistent with the present invention and for wherein allowing the degree of all authorities of this introducing as a reference with other file.

When listing numerical lower limits and numerical upper limits herein, cover the scope from any lower limit to any upper limit.Although specifically describe illustrated embodiment of the present invention, will be appreciated that various other improves and will be obvious for those skilled in the art and easily can be made by those skilled in the art, only otherwise depart from enlightenment of the present invention and scope.Therefore, what be not intended claims is range limited in embodiment as herein described and explanation, and this claim is understood to comprise the feature being present in all patent novelties of the present invention, comprise all features, it is considered as being equal to by the technician in the field that the invention belongs to.

Describe the present invention with reference to numerous embodiments and specific embodiment above.According to detailed description above, it may occur to persons skilled in the art that many variants.All this obvious variants are in the complete scope imagined of claims.

Claims

1. a composition, it comprises:

A () mooney viscosity [ML (1+4) 125 DEG C] is the ethylene-propylene-diene terpolymer of about 25-about 300 and the ethylene content of this ethylene-propylene-diene terpolymer is at least about 60wt%; With

(b) polyolefin elastomer.

2. composition according to claim 1, the amount that wherein said ethylene-propylene-diene terpolymer is about 50wt% with the about 10-of described composition exists.

3. the composition described in claim 1 or 2, wherein said polyolefin elastomer is comprise to derive from the unit of propylene at least about 60wt% and about 5-is about the elastomerics based on propylene that 25wt% derives from the unit of ethene, based on the described elastomeric total weight based on propylene, the wherein said elastomerics based on propylene has the melting heat lower than about 80J/g.

4. composition according to claim 3, the wherein said elastomerics based on propylene has the melt flow rate (MFR) (ASTM D1238,2.16kg, 230 DEG C) that about 2g/10min-is about 20g/10min.

5. the composition described in any one of claim 1-4, wherein said polyolefin elastomer is to exist relative to the amount of described ethylene-propylene-diene terpolymer lower than about 150phr.

6. the composition described in any one of claim 1-5, wherein said polyolefin elastomer is to exist relative to the amount of described ethylene-propylene-diene terpolymer lower than about 100phr.

7. the composition described in any one of claim 1-6, wherein said polyolefin elastomer is to exist relative to the amount of described ethylene-propylene-diene terpolymer lower than about 50phr.

8. the composition described in any one of claim 1-7, wherein said polyolefin elastomer is to exist relative to the amount of described ethylene-propylene-diene terpolymer lower than about 20phr.

9. the composition described in any one of claim 1-8, comprise further in filler, processing aid, solidifying agent and accelerator one of at least.

10. the composition described in any one of claim 1-9, comprises sulphur further.

11. compositions according to claim 10, wherein said sulphur is to exist relative to the amount of described ethylene-propylene-diene terpolymer lower than 5phr.

Composition described in 12. any one of claim 1-11, comprises sulfur donor further.

13. compositions according to claim 12, wherein said sulfur donor comprise in tetramethyl-thiuram disulfide and bis-pentamethylenethiuram tetrasulfide one of at least.

Composition described in 14. claims 12 or 13, wherein said sulfur donor is to exist relative to the amount of described ethylene-propylene-diene terpolymer lower than 5phr.

Composition described in 15. any one of claim 1-14, the mooney viscosity [ML (1+4) 100 DEG C] of wherein said composition about 0-about 15 lower than not containing described polyolefin elastomer but the compositionally mooney viscosity [ML (1+4) 100 DEG C] of the composition that other side is identical.

Composition described in 16. any one of claim 1-15, wherein said composition have following character one of at least: (i) tensile break strength is low to moderate many about 15% than not containing described polyolefin elastomer but the compositionally tensile break strength of the composition that other side is identical; (ii) compressive set uprises at the most about 30% than not containing described polyolefin elastomer but the compositionally compressed shape of the composition that other side is identical.

17. 1 kinds of methods preparing composition, it comprises the following steps:

A () by (i) mooney viscosity [ML (1+4) 125 DEG C] is the ethylene-propylene-diene terpolymer of about 25-about 300 and the ethylene content of this ethylene-propylene-diene terpolymer is at least about 60wt% and (ii) polyolefin elastomer combines, and

B () forms described composition.

Method described in 18. rights 17, wherein said polyolefin elastomer comprises to derive from the unit of propylene at least about 60wt% and about 5-is about the elastomerics based on propylene that 25wt% derives from the unit of ethene, based on the described elastomeric total weight based on propylene, the wherein said elastomerics based on propylene has the melting heat lower than about 80J/g.

Method described in 19. rights 17 or 18, comprises the step making described composition form goods further.

Method described in 20. any one of claim 17-19, the mooney viscosity [ML (1+4) 100 DEG C] of wherein said composition about 0-about 15 lower than not containing described polyolefin elastomer but the compositionally mooney viscosity [ML (1+4) 100 DEG C] of the composition that other side is identical.

Method described in 21. any one of claim 17-20, wherein said composition have following character one of at least: (i) tensile break strength is low to moderate many about 15% than not containing described polyolefin elastomer but the compositionally tensile break strength of the composition that other side is identical; (ii) compressive set uprises at the most about 30% than not containing described polyolefin elastomer but the compositionally compressed shape of the composition that other side is identical.

22. 1 kinds of goods, it comprises the composition described in any one of claim 1-16.

23. goods according to claim 22, wherein said goods are extruded product, moulded product, flexible pipe, sheet material, film or overcoat.

24. 1 kinds of compositions, it comprises:

B () is the elastomerics based on propylene that about 5-is about 15phr relative to described ethylene-propylene-diene terpolymer amount, the described elastomerics based on propylene comprises at least 60wt% propylene and about 5-and is about 25wt% ethene, based on the described elastomeric total weight based on propylene, the wherein said elastomerics based on propylene has the melting heat lower than about 80J/g;

C () is the sulphur of about 0.5phr relative to described ethylene-propylene-diene terpolymer amount;

D () is the tetramethyl-thiuram disulfide of about 1phr relative to described ethylene-propylene-diene terpolymer amount; With

E () is the bis-pentamethylenethiuram tetrasulfide of about 1.5phr relative to described ethylene-propylene-diene terpolymer amount.

A () by (i) mooney viscosity [ML (1+4) 125 DEG C] is the ethylene-propylene-diene terpolymer of about 25-about 300 and the ethylene content of this ethylene-propylene-diene terpolymer is at least about 60wt% with (ii) polyolefin elastomer is combined, and

B () forms described composition, the mooney viscosity [ML (1+4) 100 DEG C] of the described composition wherein formed about 0-about 15 lower than not containing described polyolefin elastomer but the compositionally mooney viscosity [ML (1+4) 100 DEG C] of the composition that other side is identical.