TH51968B - Latex, natural rubber, natural rubber, rubber mixtures and car tires use the same. - Google Patents

Abstract

DC60 (01/03/47) Natural rubber latex of this invention, where the phospholipids contained in the latex are degraded, especially natural rubber latex. Where it is degraded by the enzymatic treatment with lipase and / or phospholipase at 70 ° C. Or lower have Machinability is excellent and in its natural rubber and rubber mixtures using the same. Physical properties such as anti-aging characteristics, tensile strength, stretch and abrasion resistance are maintained sufficiently, therefore the natural rubber of this invention can be used as Excellent components for tires The natural rubber latex of this invention. Where the phospholipids contained in latex are degraded, especially natural rubber latex. Where it is degraded by enzymatic treatment with lipase and / or phospholipase at 70 ํ C or lower, has excellent machinability and in its natural rubber, and can Mix the rubber using the same thing. Physical properties such as anti-aging characteristics, tensile strength, stretch and abrasion resistance are maintained sufficiently, therefore the natural rubber of this invention can be used as Excellent components for tires

Claims (9)

1.Natural rubber latex, where the phospholipids contained in the latex are decomposed. 2. Natural rubber latex, as described in Clause 1, where lipase and / or phospholipase enzyme treatment is Made in decay 3. Natural rubber latex, as described in claim 2, where the added volume of lipase and / or phospholipase falls within the range 0.005 to 0.5 parts mass per 100 parts mass of solid components. Latex 4. Natural rubber latex, as described in claim 2 or 3, whereby enzymatic treatment Protease was done. 5. Natural rubber latex, as described in any of Clause 2 to 4, where enzyme treatment is performed at 70 ํ C or lower. 6. Natural rubber latex, as described in any of Clause 2 to 5, where applicable Surfactants have been acted in addition to Enzyme 7.Natural rubber is obtained from natural rubber latex as Described in one of Clause 1 to 6 8. Natural rubber as described above in Clause 7 where Mooney viscosity (ML1 + 4) and T80 stress relaxation time of the above rubber are in accordance with the relationship between T80 <0.0035exp (ML1 + 4 / 8.2) +20 in the range of 40 <ML1 + 4 <100 p action <Actions other than Treatment with surfactants where any one of the 14 to 11 rights clause for natural rubber is described in clause 1 5. Below or N70, the above enzyme treatment is performed at temperature 13 1. 4. Practice the enzyme as described above. Prodase enzyme was acted in addition to the 12 1 3. Mass of the 100% solid component per mass 0.5 to 0.005 in the amount that was in the phospholipid range and the enzyme was acted on by addition of lyophilisate. Natural rubber production process specification as described in claim 1 2. Phospholipase with lipase is performed under enzymatic treatment. Natural rubber latex Where it is produced by adopting Natural rubber production process 11. 9 described in the Clause Tires specified by the use of rubber mixtures are as follows: 10. 8 7 Rubber mixes using natural rubber as described in the disclaimer. 9. ML1 + 4) was stopped immediately after the rotor measurement due to the rotation of 20% reduced to, which is 80% reduced, the ML1 + 4 used until the value of (s) time was T80, the value measured at temperature. (Given that>