EP1791903A1 - Composition retardant le grillage - Google Patents
Composition retardant le grillageInfo
- Publication number
- EP1791903A1 EP1791903A1 EP05802600A EP05802600A EP1791903A1 EP 1791903 A1 EP1791903 A1 EP 1791903A1 EP 05802600 A EP05802600 A EP 05802600A EP 05802600 A EP05802600 A EP 05802600A EP 1791903 A1 EP1791903 A1 EP 1791903A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tetramethyl
- nitroxide
- tert
- crosslinking
- peroxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 46
- 238000004132 cross linking Methods 0.000 claims abstract description 45
- 150000001451 organic peroxides Chemical class 0.000 claims abstract description 41
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical class ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 11
- 229920001971 elastomer Polymers 0.000 claims abstract description 9
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 8
- 239000000806 elastomer Substances 0.000 claims abstract description 6
- 150000002978 peroxides Chemical class 0.000 claims description 14
- 229920000642 polymer Polymers 0.000 claims description 14
- UZFMOKQJFYMBGY-UHFFFAOYSA-N 4-hydroxy-TEMPO Chemical group CC1(C)CC(O)CC(C)(C)N1[O] UZFMOKQJFYMBGY-UHFFFAOYSA-N 0.000 claims description 12
- -1 4-oxo-2,2,6,6-tetramethyl-1-piperidinyloxy Chemical group 0.000 claims description 9
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 7
- AXWJKQDGIVWVEW-UHFFFAOYSA-N 2-(dimethylamino)butanedioic acid Chemical compound CN(C)C(C(O)=O)CC(O)=O AXWJKQDGIVWVEW-UHFFFAOYSA-N 0.000 claims description 7
- 229920001577 copolymer Polymers 0.000 claims description 7
- 229920002943 EPDM rubber Polymers 0.000 claims description 6
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 claims description 5
- XEGLBSZEAJDYBS-UHFFFAOYSA-N 3-tert-butylperoxy-1-(tert-butylperoxymethyl)-1,5-dimethylcyclohexane Chemical compound CC1CC(OOC(C)(C)C)CC(C)(COOC(C)(C)C)C1 XEGLBSZEAJDYBS-UHFFFAOYSA-N 0.000 claims description 5
- 244000043261 Hevea brasiliensis Species 0.000 claims description 4
- 239000005062 Polybutadiene Substances 0.000 claims description 4
- 229920001684 low density polyethylene Polymers 0.000 claims description 4
- 239000004702 low-density polyethylene Substances 0.000 claims description 4
- 229920003052 natural elastomer Polymers 0.000 claims description 4
- 229920001194 natural rubber Polymers 0.000 claims description 4
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 4
- SFXHWRCRQNGVLJ-UHFFFAOYSA-N 4-methoxy-TEMPO Chemical group COC1CC(C)(C)N([O])C(C)(C)C1 SFXHWRCRQNGVLJ-UHFFFAOYSA-N 0.000 claims description 3
- RPDUDBYMNGAHEM-UHFFFAOYSA-N PROXYL Chemical group CC1(C)CCC(C)(C)N1[O] RPDUDBYMNGAHEM-UHFFFAOYSA-N 0.000 claims description 3
- 239000004709 Chlorinated polyethylene Substances 0.000 claims description 2
- 239000002174 Styrene-butadiene Substances 0.000 claims description 2
- QYTDEUPAUMOIOP-UHFFFAOYSA-N TEMPO Chemical group CC1(C)CCCC(C)(C)N1[O] QYTDEUPAUMOIOP-UHFFFAOYSA-N 0.000 claims description 2
- SXPLGYBFGPYAHS-UHFFFAOYSA-N bis(1-hydroxy-2,2,6,6-tetramethylpiperidin-4-yl) decanedioate Chemical compound C1C(C)(C)N(O)C(C)(C)CC1OC(=O)CCCCCCCCC(=O)OC1CC(C)(C)N(O)C(C)(C)C1 SXPLGYBFGPYAHS-UHFFFAOYSA-N 0.000 claims description 2
- 229920001903 high density polyethylene Polymers 0.000 claims description 2
- 239000004700 high-density polyethylene Substances 0.000 claims description 2
- 229920002681 hypalon Polymers 0.000 claims description 2
- 229920002857 polybutadiene Polymers 0.000 claims description 2
- 229920001195 polyisoprene Polymers 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims description 2
- 229940070710 valerate Drugs 0.000 claims 2
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 claims 2
- 150000001993 dienes Chemical class 0.000 claims 1
- 229920001038 ethylene copolymer Polymers 0.000 claims 1
- 229920000092 linear low density polyethylene Polymers 0.000 claims 1
- 239000004707 linear low-density polyethylene Substances 0.000 claims 1
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 229920001897 terpolymer Polymers 0.000 claims 1
- 230000002265 prevention Effects 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 description 6
- 239000000178 monomer Substances 0.000 description 6
- 230000000979 retarding effect Effects 0.000 description 6
- MYOQALXKVOJACM-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy pentaneperoxoate Chemical compound CCCCC(=O)OOOC(C)(C)C MYOQALXKVOJACM-UHFFFAOYSA-N 0.000 description 5
- 229940116351 sebacate Drugs 0.000 description 5
- CXMXRPHRNRROMY-UHFFFAOYSA-L sebacate(2-) Chemical compound [O-]C(=O)CCCCCCCCC([O-])=O CXMXRPHRNRROMY-UHFFFAOYSA-L 0.000 description 5
- GDOPTJXRTPNYNR-UHFFFAOYSA-N methyl-cyclopentane Natural products CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 description 4
- 239000005060 rubber Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000001588 bifunctional effect Effects 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- NALFRYPTRXKZPN-UHFFFAOYSA-N 1,1-bis(tert-butylperoxy)-3,3,5-trimethylcyclohexane Chemical compound CC1CC(C)(C)CC(OOC(C)(C)C)(OOC(C)(C)C)C1 NALFRYPTRXKZPN-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 125000000746 allylic group Chemical group 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000007863 gel particle Substances 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- CCNDOQHYOIISTA-UHFFFAOYSA-N 1,2-bis(2-tert-butylperoxypropan-2-yl)benzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC=C1C(C)(C)OOC(C)(C)C CCNDOQHYOIISTA-UHFFFAOYSA-N 0.000 description 1
- 150000005208 1,4-dihydroxybenzenes Chemical class 0.000 description 1
- OCVLSHAVSIYKLI-UHFFFAOYSA-N 3h-1,3-thiazole-2-thione Chemical class SC1=NC=CS1 OCVLSHAVSIYKLI-UHFFFAOYSA-N 0.000 description 1
- WSGDRFHJFJRSFY-UHFFFAOYSA-N 4-oxo-TEMPO Chemical compound CC1(C)CC(=O)CC(C)(C)N1[O] WSGDRFHJFJRSFY-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241001441571 Hiodontidae Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 150000004659 dithiocarbamates Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 150000002432 hydroperoxides Chemical class 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 125000001160 methoxycarbonyl group Chemical group [H]C([H])([H])OC(*)=O 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 150000002826 nitrites Chemical class 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical group O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 239000004717 peroxide crosslinked polyethylene Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000003340 retarding agent Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
Definitions
- the present invention relates to the prevention of roasting before the crosslinking of a thermoplastic and / or elastomer composition by peroxides and more particularly to a composition comprising a nitroxide and at least one organic peroxide, for delaying roasting.
- Patent EP 0837 080 describes a method of grafting a functional monomer, in particular maleic anhydride, onto a thermoplastic polymer in the presence of a nitroxide, the function of which is to prevent crosslinking during the grafting.
- scorch retarding compositions comprising a nitroxide, a crosslinking promoter and an organic peroxide.
- R 1 , R 2 , R 5 and R 6 represent an alkyl group of 1 to 4 carbons and R 3 and R 4 represent an alkyl group of 1 to 4 carbons or are connected and represent a group - CH 2 -CHX- CH 2 - with X being a hydroxy, methoxy, cyano, phenylcarbonyloxy, carboxyl or methoxycarbonyl group.
- TEMPO 2,2,6,6-tetramethyl-1-piperidinyloxy
- HTEMPO 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy
- TEMPO 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy
- nitroxides of formula I are used in admixture with an organic peroxide.
- organic peroxide also known as DCP
- bis ( ⁇ -tert-butylperoxyisopropyl) benzene in combination with a compound of general formula I are preferred as scorch-retarding agents.
- the organic peroxide and the compound of general formula I are used in proportions by weight ranging from 1: 0.02 to 1: 1 and advantageously from 1: 0.1 to 1: 0.5. Apart from these proportions, if the content of the compound of the general formula I in terms of peroxide is less than 1: 0.02, the reduction effect of the roasting is less marked; if it is greater than 1: 1, then a substantial decrease in the crosslinking density is noted.
- the weight proportion of organic peroxide is normally between 0.3 and 5 parts per 100 parts by weight of polyethylene and advantageously between e-1-and-3-parts ⁇
- Table 1 of the patent application JP 11-49865 shows that the addition in 500 g of low density polyethylene of 12.5 g of DCP with 2.5 g (0.5%) or 5 g ( 1, 0%) of TEMPO or HTEMPO makes it possible to increase the roasting time at 145 ° C. expressed as time A (time necessary to reach 10% of the maximum torque) and time B (time required to reach the value of torque of 0.4 kgf.cm) compared to the addition of 12.5 g of DCP alone.
- time A time necessary to reach 10% of the maximum torque
- time B time required to reach the value of torque of 0.4 kgf.cm
- DCP with 2.5 g (0.5%) or 5 g (1.0%) of TEMPO or HTEMPO causes a very marked decrease in the crosslinking density expressed as a maximum value of the torque at 180 ° C., compared with with the addition of DCP alone.
- the reduction of the final crosslinking density represents a major drawback.
- the crosslinking density is an indication of the mechanical properties of the final part.
- a decrease in the crosslinking density most likely indicates a decrease in mechanical properties. It may be envisaged in certain cases to compensate for this reduction in crosslinking density by increasing the amount of crosslinking system (peroxide), to the detriment of the economic aspect and the formation of higher amounts of decomposition products.
- the Applicant has discovered that this loss of crosslinking density can be avoided by using a lower amount of nitroxide in a composition comprising a nitroxide and at least one organic peroxide.
- a nitroxide in low proportion with at least one organic peroxide leads to a composition for retarding the roasting during the crosslinking of thermoplastic and / or elastomeric compositions with peroxides, without deleterious effect on the final crosslinking density. It thus makes it possible to obtain curing / crosslinking compositions which give good properties of the final product with significant productivity.
- the presence of residual nitroxide in the crosslinked rubber piece gives this piece increased resistance to aging.
- the subject of the present invention is therefore a composition for retarding roasting comprising a nitroxide and at least one organic peroxide, characterized in that the organic peroxide (s) is (are) used in proportions by weight ranging from from 1: 0.01 to 1: 0.1 relative to the amount of nitroxide present.
- the (or) peroxide (s) is (are) used in proportions by weight ranging from 1: 0.03 to 1: 0.05 relative to the amount of nitroxide present.
- the nitroxide is selected from the group consisting of 2,2,6,6-tetramethyl-1-piperidinyloxy (generally marketed as TEMPO), 4-hydroxy 2,2,6,6-tetramethyl-1-piperidinyloxy (generally marketed under the name 4-hydroxy-TEMPO), 4-methoxy-2,2,6,6-tetramethyl-1-piperidinyloxy (commonly known as 4-methoxy-TEMPO), 4-oxo-2,2,6,6 1-tetramethyl-1-piperidinyloxy (commonly known as 4-oxo-TEMPO), 2,2,5,5-tetramethyl-1-pyrrolidinyloxy, bis (1-oxyl-2,2,6,6-tetramethylpiperidin-4-yl) sebacate (marketed under the trademark CXA 5415 by the company Ciba Specialty Chemical), 1 -piperidinyloxy-4,4 '- (1,10-dioxo-10-decanediyl) bis (oxy)) bis (2,2,
- the organic peroxide (s) is (are) chosen from dicumyl peroxide, 1,3-1,4 bis (tert-butylperoxyisopropyl) benzene; 1,1 'di (tert-butylperoxy) -3,3,5-trimethylcyclohexane; n-butyl-4,4'-di (tert-butylperoxy) valerate; 2,5-dimethyl-2,5-di- (tert-butylperoxy) hexane.
- Organic peroxides such as 1,3-1,4 bis (tert-butylperoxyisopropyl) benzene, 1,1 'di (tert-butylperoxy) -3,3,5-trimethylcyclohexane, or n-butyl-4,4 '-di (tert-butylperoxy) valerate are particularly preferred.
- the composition comprises 1, 3-1, 4 bis (tert-butylperoxyisopropyl) benzene and 4-hydroxy-TEMPO in a weight ratio ranging from 1: 0.01 to 1: 0.1, from preferably 1: 0.025 to 1: 0.075.
- the composition comprises 1,3-1,4 bis (tert-butylperoxyisopropyl) benzene and di-TEMPO sebacate in a weight ratio ranging from 1: 0.01 to 1: 0.1, from preferably 1: 0.025 to 1: 0.075.
- the composition comprises 1,1 'di (tert-butyliperoxy) -373,5-trimethylhexane-and-4-hydr-ox-y-TE-MP-O-in-a-recap.ori Mass ratio ranging from 1: 0.01 to 1: 0.1, preferably from 1: 0.025 to 1: 0.075.
- the composition comprises n-butyl-4,4'-di (tert-butylperoxy) valerate and 4-hydroxy TEMPO in a weight ratio ranging from 1: 0.01 to 1: 0.1, preferably from 1: 0.025 to 1: 0.075.
- the composition comprises n-butyl-4,4'-di (tert-butylperoxy) valerate and di-TEMPO sebacate in a weight ratio ranging from 1: 0.01 to 1: 0.1. preferably from 1: 0.025 to 1: 0.075.
- compositions according to the invention may be mixed with a crosslinking promoter chosen from the group consisting of compounds containing at least one double bond which may be bifunctional or polyfunctional, such as, for example, bifunctional vinyl monomers, monomers bifunctional allylic, polyfunctional vinyl monomers or polyfunctional allylic monomers.
- a crosslinking promoter chosen from the group consisting of compounds containing at least one double bond which may be bifunctional or polyfunctional, such as, for example, bifunctional vinyl monomers, monomers bifunctional allylic, polyfunctional vinyl monomers or polyfunctional allylic monomers.
- compositions according to the invention can be advantageously used to control the crosslinking in a crosslinking process of a thermoplastic polymer and / or elastomer that can be crosslinked by means of a peroxide.
- the present invention also provides a crosslinkable composition
- a crosslinkable composition comprising a thermoplastic polymer and / or an elastomeric polymer capable of being cross-linked by means of a peroxide, a nitroxide and at least one organic peroxide, the amount by weight of organic peroxide (s) ranging from 1: 0.01 to 1: 0.1 relative to the amount of nitroxide present, preferably from 1: 0.025 to 1: 0.075.
- the organic peroxide (s) is (are) preferably between 0.2 and 5 parts and advantageously between 1 and 4 parts per 100 parts by weight of polymer.
- the nitroxide and the peroxides are preferably those used for the scorch retarding composition.
- the crosslinkable composition may further contain a crosslinking promoter as defined above.
- the present invention also provides a process for crosslinking a crosslinkable composition
- a crosslinkable composition comprising a thermoplastic polymer and / or an elastomeric polymer capable of being crosslinked by means of a peroxide, wherein said polymer is mixed in the presence of a nitroxide and at least one an organic peroxide, the amount by weight of organic peroxide (s) ranging from 1: 0.01 to 1: 0.1 with respect to the amount of -nitroxide-preferably de-1- ⁇ ⁇ 0 025 to 1 -: - 0.0 to 75, -per proceedings- thereby control the crosslinking.
- the present invention also provides molded articles or extrusions such as wires, electrical cables obtained from a crosslinkable composition defined above.
- thermoplastic and / or elastomeric polymers considered in the present invention can be defined as natural or synthetic polymers which have a thermoplastic and / or elastomeric character and which can be crosslinked (cured) under the action of a crosslinking agent. .
- a crosslinking agent for Rubber World, "Elastomer Crosslinking with Diperoxyketals", October 1983, pages 26-32, and in Rubber and Plastic News, "Organic Peroxides for Rubber Crosslinking", September 29, 1980, pages 46-50, the crosslinking action is described. and crosslinkable polymers.
- Polyolefins suitable for the present invention are described in Modern Plastics Encyclopedia 89, pp. 63-67, 74-75.
- polymers and / or elastomers By way of example of polymers and / or elastomers, mention may be made of low density linear polyethylene, low density polyethylene, high density polyethylene, chlorinated polyethylene, and ethylene-propylene-diene terpolymers (EPDM). , ethylene-vinyl acetate copolymers, ethylene-propylene copolymers, silicone rubber, natural rubber (NR), polyisoprene (IR), polybutadiene (BR), acrylonitrile-butadiene copolymers (NBR) , styrene-butadiene copolymers (SBR). chlorosulfonated polyethylene or fluoroelastomers.
- NR natural rubber
- IR polyisoprene
- BR polybutadiene
- NBR acrylonitrile-butadiene copolymers
- SBR styrene-butadiene copolymers
- ethylene (meth) acrylate copolymers Mention may also be made of ethylene (meth) acrylate copolymers and ethylene-glycidyl methacrylate copolymers.
- compositions retarding roasting and crosslinkable compositions according to the invention may comprise antioxidants, stabilizers, plasticizers and inert fillers such as silica, clay or calcium carbonate.
- the crosslinking temperature is between 140 and 250 ° C. and preferably between 160 and 200 ° C.
- the crosslinking process is carried out in the presence of a nitroxide and at least one organic peroxide as defined for the crosslinkable composition.
- Transformation of the crosslinkable compositions into molded or extruded articles can be carried out during or after the crosslinking.
- EPDM ethylene-propylene-diene terpolymer marketed by Enichem OHT: 4-hydroxy TEMPO SDT: di-TEMPO sebacate Luperox F: 1, 3-1, 4 bis (tert-butylperoxyisopropyl) benzene
- Luperox 230 n-butyl-4,4'-di (tert-butylperoxy) valerate)
- Luperox 231 1,1 'di (tert-butylperoxy) -3,3,5-trimethylcyclohexane
- Luperox 101 2,5-dimethyl- 2,5-di- (tert-butylperoxy) hexane
- the crosslinking density (MH) and the crosslinking time (t 90 ) of the tested mixtures were measured at 170 or 180 ° C. using a Monsanto ODR rheometer. 2000 E (Alpha Technologies, oscillation arc 3 °, oscillation frequency 100 cycles / min).
- the roasting time (t s5 ) was measured at 110 or 130 ° C. using a Mooney MV 2000 viscometer (Alpha Technologies).
- M ⁇ maximum value of the torque obtained from the curve recorded by the rheometer, expressed in N. m. It indicates the level of crosslinking density.
- t 90 time required to reach 90% of the maximum torque.
- This is the crosslinking time expressed in min: st s5 time required at a given temperature for the nominal torque to increase by 5 Mooney units.
- the temperatures selected are those at which the compounding operation typically takes place, namely 130 ° C. for Luperox F and Luperox 101, and 110 ° C. for Luperox 231 and Luperox 230. The examples are all carried out according to the following procedure:
- EPDM compound 300 g are mixed in the presence of a crosslinking system on a roller mixer at 80 ° C for 5 minutes.
- the contents in Organic peroxide and nitroxide are expressed in parts or milli parts by weight per 100 parts by weight of polymer (phr or mphr).
- the sample is then placed in the rheometer chamber or viscometer to perform the measurements of MH,
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0410002A FR2875502B1 (fr) | 2004-09-22 | 2004-09-22 | Composition retardant le grillage |
PCT/FR2005/002295 WO2006032765A1 (fr) | 2004-09-22 | 2005-09-16 | Composition retardant le grillage |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1791903A1 true EP1791903A1 (fr) | 2007-06-06 |
Family
ID=34948829
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05802600A Ceased EP1791903A1 (fr) | 2004-09-22 | 2005-09-16 | Composition retardant le grillage |
Country Status (7)
Country | Link |
---|---|
US (1) | US7829634B2 (fr) |
EP (1) | EP1791903A1 (fr) |
JP (1) | JP5000518B2 (fr) |
KR (1) | KR101184239B1 (fr) |
CN (1) | CN101023127B (fr) |
FR (1) | FR2875502B1 (fr) |
WO (1) | WO2006032765A1 (fr) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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JP4236686B2 (ja) | 2007-04-19 | 2009-03-11 | 横浜ゴム株式会社 | 変性ブチルゴム組成物 |
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JP4420095B2 (ja) | 2007-10-01 | 2010-02-24 | 横浜ゴム株式会社 | 変性ブチルゴム組成物 |
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FR2963352B1 (fr) * | 2010-07-27 | 2014-03-14 | Arkema France | Procede pour preparer un cable et utilisation de peroxydes organiques pour reduire l'etape de degazage dans un procede pour preparer un cable |
US8584725B2 (en) | 2010-09-17 | 2013-11-19 | The Goodyear Tire & Rubber Company | Rubber composition, preparation and tire with component |
CN103206541B (zh) * | 2013-04-23 | 2015-07-15 | 广州机械科学研究院有限公司 | 一种夹布油封及其制备方法与应用 |
FR3022543B1 (fr) | 2014-06-20 | 2021-05-14 | Lafarge Sa | Nouveau beton a ultra haute performance |
JP6830063B2 (ja) * | 2014-12-09 | 2021-02-17 | アーケマ・インコーポレイテッド | 大気酸素の存在下でポリマーを架橋させるための組成物および方法 |
JP6707541B2 (ja) * | 2014-12-09 | 2020-06-10 | アーケマ・インコーポレイテッド | 大気酸素の存在下においてポリマーを架橋させるための組成物および方法 |
GB2561796A (en) | 2016-02-08 | 2018-10-24 | Shell Int Research | Method for providing zonal isolation in an underground wellbore |
KR102544970B1 (ko) | 2016-03-30 | 2023-06-20 | 다우 글로벌 테크놀로지스 엘엘씨 | 메틸-라디칼 포착제를 갖는 가교결합성 폴리머 조성물 및 이로부터 제조된 물품 |
BR112020006330B1 (pt) | 2017-09-30 | 2023-03-07 | Dow Global Technologies Llc | Composição, composição reticulada e artigo |
US11898026B2 (en) | 2017-11-08 | 2024-02-13 | Dow Global Technologies Llc | Air-curable ethylene/alpha-olefin/diene interpolymer composition |
FR3084369B1 (fr) * | 2018-07-25 | 2021-10-29 | Arkema France | Composition comprenant un melange de peroxydes organiques dont le 1,3-1,4-bis (tert-butylperoxy isopropyl)benzene pour la reticulation de polymeres reticulables |
IT202100014606A1 (it) | 2021-06-04 | 2022-12-04 | Rubber Conv Srl | Additivo devulcanizzante, relativo metodo di devulcanizzazione e prodotto devulcanizzato |
WO2024031619A1 (fr) * | 2022-08-12 | 2024-02-15 | Dow Global Technologies Llc | Compositions d'interpolymère d'éthylène/alpha-oléfine durcissables à l'air |
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US3954907A (en) | 1974-11-27 | 1976-05-04 | Union Carbide Corporation | Composition with selected vinyl compounds and process for avoiding scorching of ethylene polymer composition |
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US5449724A (en) * | 1994-12-14 | 1995-09-12 | Xerox Corporation | Stable free radical polymerization process and thermoplastic materials produced therefrom |
US5552502A (en) * | 1995-11-16 | 1996-09-03 | Xerox Corporation | Polymerization process and compositions thereof |
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JPH1149865A (ja) * | 1997-07-31 | 1999-02-23 | Nof Corp | エチレン系ポリマーの架橋用組成物、架橋方法及びポリマー組成物 |
FR2768739B1 (fr) * | 1997-09-19 | 2004-08-06 | Atochem Elf Sa | Polymere vinylaromatique choc obtenu a partir d'un caoutchouc porteur d'un groupement generateur d'un radical libre stable |
US6180706B1 (en) * | 1998-06-16 | 2001-01-30 | Union Carbide Chemicals & Plastics Technology Corporation | Crosslinkable high pressure low density polyethylene composition |
JP2000086816A (ja) * | 1998-09-11 | 2000-03-28 | Yokohama Rubber Co Ltd:The | ゴム組成物およびゴルフボール |
JP2000212329A (ja) * | 1999-01-20 | 2000-08-02 | Yokohama Rubber Co Ltd:The | ゴム組成物 |
FR2792321B1 (fr) * | 1999-04-19 | 2003-12-12 | Atochem Elf Sa | Procede de fabrication d'une resine de polypropylene a rheologie controlee |
WO2002024767A1 (fr) * | 2000-09-22 | 2002-03-28 | Atofina | Degradation peroxydique de polymers en presence de radicaux libres stables multifonctionnels |
FR2819517B1 (fr) * | 2000-10-03 | 2003-03-21 | Atofina | Composition comprenant un nitroxyde, un promoteur et eventuellement un initiateur de radicaux libres |
FR2814749B1 (fr) * | 2000-10-03 | 2003-06-13 | Atofina | Composition retardant le grillage |
US20040198920A1 (en) | 2003-04-03 | 2004-10-07 | Atofina | Scorch-retardant composition |
US6653409B2 (en) * | 2001-02-26 | 2003-11-25 | The Yokohama Rubber Co., Ltd. | Radical-modified polymer and polymer composition containing the same |
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2004
- 2004-09-22 FR FR0410002A patent/FR2875502B1/fr active Active
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2005
- 2005-09-16 CN CN2005800312430A patent/CN101023127B/zh active Active
- 2005-09-16 EP EP05802600A patent/EP1791903A1/fr not_active Ceased
- 2005-09-16 KR KR1020077005795A patent/KR101184239B1/ko active IP Right Grant
- 2005-09-16 JP JP2007532921A patent/JP5000518B2/ja active Active
- 2005-09-16 WO PCT/FR2005/002295 patent/WO2006032765A1/fr active Application Filing
- 2005-09-16 US US11/575,103 patent/US7829634B2/en active Active
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US20040138081A1 (en) * | 2001-05-17 | 2004-07-15 | Sandra Grimaldi | Organic peroxide heat stabiliser |
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See also references of WO2006032765A1 |
Also Published As
Publication number | Publication date |
---|---|
WO2006032765A8 (fr) | 2007-04-12 |
WO2006032765A1 (fr) | 2006-03-30 |
CN101023127A (zh) | 2007-08-22 |
JP5000518B2 (ja) | 2012-08-15 |
FR2875502B1 (fr) | 2007-01-05 |
KR20070054654A (ko) | 2007-05-29 |
JP2008513592A (ja) | 2008-05-01 |
US20080051496A1 (en) | 2008-02-28 |
FR2875502A1 (fr) | 2006-03-24 |
CN101023127B (zh) | 2013-03-27 |
US7829634B2 (en) | 2010-11-09 |
KR101184239B1 (ko) | 2012-09-21 |
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