Source: http://www.google.com/patents/US5919841?dq=7,181,690
Timestamp: 2014-03-11 13:03:14
Document Index: 387016717

Matched Legal Cases: ['Application No. 80', 'Application No. 80', 'Application No. 63', 'Application No. 63', '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. 4', 'Application No. 4', 'Application No. 4', 'Application No. 4']

Patent US5919841 - 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/US5919841?utm_source=gb-gplus-sharePatent US5919841 - Elastomeric compounds incorporating silicon-treated carbon blacksAdvanced Patent SearchPublication numberUS5919841 APublication typeGrantApplication numberUS 08/876,903Publication dateJul 6, 1999Filing dateJun 17, 1997Priority dateMay 22, 1995Fee statusPaidAlso published asUS5830930Publication number08876903, 876903, US 5919841 A, US 5919841A, US-A-5919841, US5919841 A, US5919841AInventorsRobert A. Francis, Khaled Mahmud, Meng-Jiao WangOriginal AssigneeCabot CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (58), Non-Patent Citations (54), Referenced by (26), Classifications (15), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetElastomeric compounds incorporating silicon-treated carbon blacksUS 5919841 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.
16. The method of claim 1, wherein said aggregate has a nitrogen surface area that is at least 4 m.sup.2 /g more than said aggregate prior to said extraction.
19. The aggregate of claim 9, wherein said aggregate has a nitrogen surface area that is at least 4 m.sup.2 /g more than said aggregate prior to said extraction.
The elastomeric compounds of the present invention may be prepared from the treated carbon blacks by compounding with any elastomer including those useful for compounding a carbon black. Any suitable elastomer may be compounded with the treated carbon blacks to provide the elastomeric compounds of the present invention. Such elastomers include, but are not limited to, homo- or co-polymers of 1,3 butadiene, styrene, isoprene, isobutylene, 2,3-dimethyl-1,3-butadiene, acrylonitrile, ethylene, and propylene Preferably, the elastomer has a glass transition temperature (Tg) as measured by differential scanning colorimetry (DSC) ranging from about -120 limited, styrene-butadiene rubber (SBR), natural rubber, polybutadiene, and polyisoprene. Blends of any of the foregoing may also be used.
Flexzone 7P an anti-oxidant available from Unroyal Chemical Co., Middlebury, Conn. Durax available from R. T. Vanderbilt Co., of Norwalk, Conn., and Captax 2-mercaptobenzothiazole, is an accelerator available from R. T. Vanderbilt Co.
TABLE 6______________________________________Dynamic Hysterisis Data               tan &#948;                        tan &#948;                                abrasion atSSBR Composition.sup.a       Si-69   at 0                        at 70                                14% slip______________________________________N234        0       0.400    0.189   100N234        3       0.429    0.170   103.5OMTS-CB     0       0.391    0.175   84.4OMTS-CB     3       0.435    0.152   110.5TEOS-CB     0       0.400    0.167   78.1TEOS-CB     3       0.433    0.142   97.2______________________________________ .sup.a Duradene 715; two stage mixing.
TABLE 6A______________________________________Dynamic Hysterisis DataSSBR              tan &#948; @                       tan &#948; @                               Abrasion @Composition.sup.a     Si 69   0                       70                               14% Slip______________________________________N234      0       0.428     0.184   100N234      4       0.394     0.162   94TEOS-CB`  0       0.402     0.158   78TEOS-CB`  4       0.388     0.151   108______________________________________ .sup.a Cariflex S1215; two stage mixing
TABLE 7______________________________________Dynamic Hysterisis Data - 2 Stage v. 3 Stage Mixing               tan &#948;                        tan &#948;                                abrasion atCarbon Black       Si-69   at 0                        at 70                                14% slip______________________________________Duradene 715Two Stage MixingN234        0       0.458    0.189   100N234        3       0.439    0.170   103.5TEOS-CB     0       0.434    0.150   78.1TEOS-CB     3       0.436    0.131   97.2Duradene 715Three Stage MixingN234        0       0.471    0.165   100N234        3       0.456    0.146   98.4TEOS-CB     0       0.446    0.139   57.6TEOS-CB     3       0.461    0.113   101.8______________________________________
TABLE 8______________________________________Dynamic Hysterisis Data - oxidized, treated carbon blackCarbon Black             tan &#948;                            tan &#948;Duradene 715 - 2 stage         Si-69      at 0                            at 70______________________________________N234          0          0.513   0.186N234          3          0.463   0.176OMTS-CB       0          0.501   0.166OMTS-CB       3          0.467   0.135oxidized OMTS-CB         0          0.487   0.154oxidized OMTS-CB         3          0.467   0.133______________________________________
TABLE 9______________________________________Hysterisis and Abrasion Resistance - 3 Stage Mixing                 tan &#948;                          tan &#948;                                 wear atCarbon Black  Si-69   at 0                          at 70                                 14% slip______________________________________Solution SBR 116/NS 114 -80/20 blendN234          0       0.689    0.151  100.0N234          3       0.750    0.131  123.1TEOS-CB       0       0.721    0.115  86.3TEOS-CB       3       0.751    0.094  115.4Solution SBR SL 574N234          0       0.286    0.118  100.0N234          3       0.260    0.108  96.4TEOS-CB       0       0.246    0.101  58.0TEOS-CB       3       0.258    0.093  86.8Solution SBR PAT589N234          0       0.676    0.190  100.0N234          3       0.686    0.182  99.1TEOS-CB       0       0.698    0.170  82.4TEOS-CB       3       0.726    0.150  134.2Emulsion SBR 1500N234          0       0.299    0.176  100.0N234          3       0.285    0.137  87.9TEOS-CB       0       0.280    0.156  60.1TEOS-CB       3       0.270    0.121  88.1Natural Rubber SMR 5N234          0       0.253    0.128  100.0N234          3       0.202    0.088  85.8TEOS-CB       0       0.190    0.079  60.9TEOS-CB       3       0.173    0.069  88.6______________________________________
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A.;REEL/FRAME:009051/0879;SIGNING DATES FROM 19971028 TO 19971204RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google