摘要:
A method of storing guayule and guayule-like plant material prior to processing which comprises mixing the material in communited form with at least one essentially water-free organic liquid to form a slurry in which the material is protected from contact with oxygen and storing said slurry for at least about 24 hours is discosed. Preferably, the organic liquid is an alcohol, ether, ester, ketone, or hydrocarbon and optionally the slurry also contains an oxidation stabilizer.
摘要:
A method of storing guayule and guayule-like plant material prior to processing which comprises mixing the material in communited form with at least one essentially water-free organic liquid to form a slurry in which the material is protected from contact with oxygen and storing said slurry for at least about 24 hours is disclosed. Preferably, the organic liquid is an alcohol, ether, ester, ketone, or hydrocarbon and optionally the slurry also contains an oxidation stabilizer.
摘要:
A process for extracting rubber and/or resin from rubber containing plants such as guayule utilizing a monophase mixture of an organic polar solvent and a hydrocarbon solvent.
摘要:
A process for achieving a high yield of rubber and/or resin from rubber containing plants such as guayule plants by crushing the plants, forming a slurry with a solvent and fine grinding said slurry with a high shear mixer. The time required by the process is very short in comparison with prior art techniques.
摘要:
Rubber, hydrocarbons, i.e., resins, and other useful by-products are extracted from shrubs such as guayule and guayule-like shrubs by a procedure wherein the shrub, after being comminuted, is processed in an aqueous and/or a non-aqueous system. An optional water treatment step can be used to remove water solubles and/or facilitate processing and achieve increased yield of desired by-products.
摘要:
Guayule plant material can be stored in an aqueous system comprising (a) communited guayule plant material; (b) water and (c) an odor inhibitor. Typical inhibitors include protanic acids, acid salts, metal oxides and metal hydroxides. These storage systems permit efficient operation of guayule processing facilities while minimizing odors often developed in stored plant material.
摘要:
This invention relates to methods of processing guayule plant material. More particularly, it relates to processing methods, including volatilization and heating steps, by which resinous material, extracts and resins from guayule plants are converted and recovered.
摘要:
Combinations of para-phenylene diamines and para di(nitroso) arenes act synergistically in guayule rubber-based compositions to protect them against oxidative degradation. A typically useful diamine is N-(1,3-dimethylbutyl)-N'-phenyl-phenyl-p-phenylene diamine and a useful arene is para-di(nitroso)benzene. Vulcanizable compositions, as well as articles made therefrom, are within the scope of the invention.
摘要:
Synthetic rubber is thermooxidatively stabilized with guayule resin. The guayule resin imparts favorable stabilization as evidenced by minimum bulk viscosity changes and minimum gel formation, especially with styrene-butadiene synthetic elastomers prepared by emulsion or hydrocarbon solvent techniques.
摘要:
Elastomers such as guayule rubber is stabilized by the addition of an alkyl, cycloalkyl or alkyl substituted cycloalkyl phenyl-phenylenediamine compound with an alkyl, cycloalkyl or alkyl substituted cycloalkyl phosphite compound which, in combination, yield an unexpectant and synergistic result.