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Timestamp: 2014-10-20 05:35:55
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Matched Legal Cases: ['Application No. 80', 'Application No. 80', 'Application No. 53', 'Application No. 53', 'Application No. 61', 'Application No. 61', 'Application No. 63', 'Application No. 63', 'Application No. 63', 'Application No. 63', 'Application No. 2', 'Application No. 2', 'Application No. 4', 'Application No. 4', 'Application No. 63', 'Application No. 63', 'Application No. 4', 'Application No. 4', 'Application No. 4', 'Application No. 4', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08']

Patent US6008272 - Elastomeric compounds incorporating silicon-treated carbon blacks - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsDisclosed are elastomeric compounds including an elastomer and a silicon-treated carbon black, and optionally including a coupling agent. The elastomeric compound exhibits poorer abrasion resistance, lower hysterisis at high temperature and comparable or increased hysterisis at low temperature compared...http://www.google.com/patents/US6008272?utm_source=gb-gplus-sharePatent US6008272 - Elastomeric compounds incorporating silicon-treated carbon blacksAdvanced Patent SearchPublication numberUS6008272 APublication typeGrantApplication numberUS 09/076,009Publication dateDec 28, 1999Filing dateMay 12, 1998Priority dateMay 22, 1995Fee statusPaidPublication number076009, 09076009, US 6008272 A, US 6008272A, US-A-6008272, US6008272 A, US6008272AInventorsKhaled Mahmud, Meng-Jiao Wang, Robert A. FrancisOriginal AssigneeCabot CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (75), Non-Patent Citations (56), Referenced by (12), Classifications (18), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetElastomeric compounds incorporating silicon-treated carbon blacksUS 6008272 AAbstract Disclosed are elastomeric compounds including an elastomer and a silicon-treated carbon black, and optionally including a coupling agent. The elastomeric compound exhibits poorer abrasion resistance, lower hysterisis at high temperature and comparable or increased hysterisis at low temperature compared to an elastomer containing an untreated carbon black. Elastomeric compounds incorporating an elastomer and an oxidized, silicon-treated carbon black are also disclosed. Also disclosed are methods for preparing elastomers compounded with the treated carbon black.
TABLE 2______________________________________        Carbon BlackProperties     N234     TEOS-CB   OMTS-CB______________________________________% Silicon in Carbon Black          0.02     2.85      2.08  DBP, cc/100 g 125.0 114.0 115.0  CDBP, cc/100 g 101.5 104.1 103.5  t-Area, m2 /g 117.0 121.0 121.0  N2 area, m2 /g 120.4 136.0 133.0______________________________________
TABLE 4______________________________________HF Treatment   % Si Before             % Si After HF                        N2 SA Before                                N2 SA After  HF treatment Treatment HF treatment HF treatment______________________________________N234    0.02      0.05       123     123  OMTS-CB 3.3 0.3 138 180______________________________________
TABLE 4A______________________________________manufactured by injection of TEOS into reaction zone          % Si N2 Area______________________________________Before HF        2.27   127.7  After HF 0.04 125.8______________________________________
TABLE 5______________________________________Ingredient     Parts by weight______________________________________elastomer      100  carbon black 50  zinc oxide 3  stearic acid 2  Flexzone 7P �  1  Durax � 1.25  Captax � 0.2  sulfur 1.75  Si-69 (optional) 3 or 4______________________________________
Abrasion resistance was determined using an abrader, which is based on a Lambourn-type machine as described in U.S. Pat. No. 4,995,197, hereby incorporated by reference. The tests were carried out at 14% slip. The percentage slip is determined based on the relative velocities of a sample wheel and a grindstone wheel. The abrasion resistance index is calculated from the mass loss of the elastomeric compound. Dynamic properties were determined using a Rheometrics Dynamic Spectrometer II (RDS II, Rheometrics, Inc., N.J.) with strain sweep. The measurements were made at 0 and 70� C. with strain sweeps over a range of double strain amplitude (DSA) from 0.2 to 120%. The maximum tan δ values on the strain sweep curves were taken for comparing the hysterisis among elastomeric compounds as can be seen in FIGS. 3a and 3b. Alternatively, hysterisis measurements were made by means of temperature sweeps at a DSA of 5% and a frequency of 10 Hz. The temperature range was from -60� C. to 100� C., as seen in FIG.
TABLE 6______________________________________Dynamic Hysterisis Data               tan &#948;                        tan &#948;                                abrasion at  Si-69 at 0� C. at 70� C. 14% slip______________________________________SSBR Compositiona  N234 0 0.400 0.189 100  N234 3 0.429 0.170 103.5  OMTS-CB 0 0.391 0.175 84.4  OMTS-CB 3 0.435 0.152 110.5  TEOS-CB 0 0.400 0.167 78.1  TEOS-CB 3 0.433 0.142 97.2______________________________________ a Duradene 715; two stage mixing.
TABLE 6A______________________________________Dynamic Hysterisis Data                               Abrasion  Si 69 tan &#948;@0� C. tan &#948;@70� C. @14% Slip______________________________________SSBR  Compositiona  N234 0 0.428 0.184 100  N234 4 0.394 0.162 94  TEOS-CB' 0 0.402 0.158 78  TEOS-CB' 4 0.388 0.151 108______________________________________ a Cariflex S1215; two stage mixing
TABLE 7______________________________________Dynamic Hysterisis Data - 2 Stage v. 3 Stage Mixing                   tan &#948;                          tan &#948;                                  abrasion at  Carbon Black Si-69 at 0� C. at 70� C. 14% slip______________________________________Duradene 715  Two Stage Mixing  N234 0 0.458 0.189 100  N234 3 0.439 0.170 103.5  TEOS-CB 0 0.434 0.150 78.1  TEOS-CB 3 0.436 0.131 97.2  Duradene 715  Three Stage Mixing  N234 0 0.471 0.165 100  N234 3 0.456 0.146 98.4  TEOS-CB 0 0.446 0.139 57.6  TEOS-CB 3 0.461 0.113 101.8______________________________________
The oxidized carbon black was prepared by treating the black with nitric acid. A small stainless steel drum was loaded with carbon black and rotated. During rotation a 65% nitric acid solution is sprayed onto the carbon black, until 15 parts per hundred carbon black had been added. After a soak period of 5 minutes, the drum was heated to about 80� C. to initiate the oxidation reaction. During the oxidation reaction, the temperature increased to about 100-120� C. This temperature was held until the reaction was completed. The treated black was then heated to 200� C. to remove residual acid. The treated black was then dried overnight at 115� C. in a vacuum oven. Table 8 below compares hysterisis characteristics for elastomers compounded with OMTS-CB and oxidized OMTS-CB, with and without a coupling agent.
TABLE 8______________________________________Dynamic Hysterisis Data - oxidized, treated carbon black                        tan &#948;                              tan &#948;  Carbon Black Si-69 at 0� C. at 70� C.______________________________________Duradene 715 - 2 stage  N234 0 0.513 0.186  N234 3 0.463 0.176  OMTS-CB 0 0.501 0.166  OMTS-CB 3 0.467 0.135  oxidized OMTS-CB 0 0.487 0.154  oxidized OMTS-CB 3 0.467 0.133______________________________________
TABLE 9______________________________________Hysterisis and Abrasion Resistance - 3 Stage Mixing                                    wear at  Carbon Black Si-69 tan &#948; at 0� C. tan &#948; at 70�                                     C. 14%slip______________________________________Solution SBR 116/NS  114 -80/20 blend  N234 0 0.689 0.151 100.0  N234 3 0.750 0.131 123.1  TEOS-CB 0 0.721 0.115 86.3  TEOS-CB 3 0.751 0.094 115.4  Solution SBR SL 574  N234 0 0.286 0.118 100.0  N234 3 0.260 0.108 96.4  TEOS-CB 0 0.246 0.101 58.0  TEOS-CB 3 0.258 0.093 86.8  Solution SBR PAT589  N234 0 0.676 0.190 100.0  N234 3 0.686 0.182 99.1  TEOS-CB 0 0.698 0.170 82.4  TEOS-CB 3 0.726 0.150 134.2  Emulsion SBR 1500  N234 0 0.299 0.176 100.0  N234 3 0.285 0.137 87.9  TEOS-CB 0 0.280 0.156 60.1  TEOS-CB 3 0.270 0.121 88.1  Natural Rubber SMR 5  N234 0 0.253 0.128 100.0  N234 3 0.202 0.088 85.8  TEOS-CB 0 0.190 0.079 60.9  TEOS-CB 3 0.173 0.069 88.6______________________________________
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CorporationElastomer compositions and methodsUS6534569Jan 24, 2001Mar 18, 2003Cabot CorporationPolymers containing modified pigments and methods of preparing the sameUS6720378 *Mar 5, 2003Apr 13, 2004Yokohama Rubber Co., LtdRubber composition having improved wet skid resistance and rolling resistanceUS6908961Dec 7, 2001Jun 21, 2005Cabot CorporationElastomer composites, elastomer blends and methodsUS7137423Jun 6, 2003Nov 21, 2006The Goodyear Tire & Rubber CompanyTire with component comprised of amine functionalized styrene/diene copolymer elastomer, silanol functionalized carbon black and coupling agentUS7294666Mar 4, 2002Nov 13, 2007The Goodyear Tire & Rubber CompanyTerpolymer of styrene compound, butadiene compound and hydroxy containing acrylate or acrylamideUS7348375Apr 4, 2005Mar 25, 2008Cabot CorporationElastomer composite with ultra-high surface area/low structure carbon black filler blended with elastomer material; high tear strength; use in for example vehicle tires, engine mount bushings, conveyor belts, windshield wipersUS7351763Jul 11, 2003Apr 1, 2008The Goodyear Tire & Rubber CompanyMixture of rubber, carbon black and surface modified silicaUS8394563Jun 6, 2008Mar 12, 2013Cabot CorporationCarbon blacks, toners, and composites and methods of making sameEP2267069A1Nov 21, 2002Dec 29, 2010Cabot CorporationElastomer Composites, Elastomer Blends and MethodsEP2292689A1Nov 21, 2002Mar 9, 2011Cabot CorporationElastomer Composites, Elastomer Blends and Methods* Cited by examinerClassifications U.S. Classification523/351, 523/216, 524/424, 106/475, 523/215, 524/495, 524/571International ClassificationC08K9/06, C09C1/56, C09C1/50Cooperative ClassificationC09C1/50, C08K9/06, C09C1/56, C09C1/565European ClassificationC08K9/06, C09C1/50, C09C1/56B, C09C1/56Legal EventsDateCodeEventDescriptionMay 23, 2011FPAYFee paymentYear of fee payment: 12May 17, 2007FPAYFee paymentYear of fee payment: 8May 29, 2003FPAYFee paymentYear of fee payment: 4RotateOriginal ImageGoogle 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