Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Recombinant or stably-transformed bacterium encoding one or...
Patent
1975-11-17
1977-12-06
Turner, V. D.
Drug, bio-affecting and body treating compositions
Antigen, epitope, or other immunospecific immunoeffector
Recombinant or stably-transformed bacterium encoding one or...
424 64, 424 83, 424365, A61K 4700, A61K 7025
Patent
active
040617807
ABSTRACT:
Polymers of C4 olefins having a viscosity of 15 to 35 centistokes at 100.degree. F show improved performance as cosmetic oils, in comparison with squalane. These polymers are prepared by polymerizing (a) isobutylene by itself, or (b) C4 hydrocarbon olefin containing a mixture of at least two of isobutylene, 1-butene, 2-butene and butadiene, using a catalyst; then removing high molecular weight and low molecular weight compounds by distillation; hydrogenating the remainder of the polymerization product; removing carbonyl compounds therefrom if necessary and further purifying the resultant polymer by steam distillation or treating same with activated carbon or solvent extraction, to deodorize same.
REFERENCES:
patent: 2628187 (1953-02-01), Frohmader et al.
patent: 3211619 (1965-10-01), Buchwalter et al.
Nii Sumito
Yamamoto Takashi
Yoshida Moritoshi
Nichiyu Kagaku Co., Ltd.
Turner V. D.
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