Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1988-02-01
1989-11-21
Briggs, Sr., Wilbert J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525106, 525314, 525337, 525342, 525366, C08F 842, C08L 5302
Patent
active
048823848
ABSTRACT:
A thermoplastic polymer having good tensile strength at elevated temperatures is obtained by modifying a block copolymer composed of a conjugated diene compound and an alkenyl arene compound. The block copolymer is first selectively hydrogenated and thereafter modified by grafting silicon or boron containing functional groups primarily in the alkenyl arene block via metalation. Each silicon containing functional group preferably contains at least two functional groups which allow crosslinking by condensation reactions.
REFERENCES:
patent: 3976628 (1976-08-01), Halasa et al.
patent: 4185042 (1980-01-01), Verkouw
patent: 4409357 (1983-10-01), Milkovich
patent: 4471099 (1984-09-01), Trepka
patent: 4556464 (1985-12-01), St. Clair
patent: 4704438 (1987-11-01), Niwa et al.
Jean M. Frechet and Conrad Schuerch, "Solid-Phase Synthesis of Oligosaccharides, I. Preparation of the Solid Support, Poly [p-(1-propen-3-ol-1-yl)styrene]," Journal of the American Chemical Society /93:2/Jan. 27, 1971, pp. 492-496.
Thomas M. Fyles and Clifford C. Leznoff, "The Use of Polymer Supports in Organic Synthesis, V. The Preparation of Monacetates of Symmetrical Diols," Can. J. Chem., vol. 54, 1976, pp. 935-942.
"Abnormal Reactions of Polystyrene Metalated with Butyllithium-N,N,N',N'-Tetramethylethylenediamine," Journal of Polymer Science, Polymer Letters, Part B, vol. 6, No. 9, Sep. 1968, pp. 649-651.
M. Jean Farrall and Jean M. J. Frechet, "Bromination and Lithiation: Two Important Steps in the Functionalization of Polystyrene Resins", J. Org. Chem., vol. 41, No. 24, 1976, pp. 3877-3882.
"Carbon-13 Nuclear Magnetic Resonance Spectra of Methyl Substituted Polystyrenes," Journal of Polymer Science, Polymer Letters Edition, vol. 12, pp. 199-202 (1974).
Chin Steven S.
Willis Carl L.
Briggs Sr. Wilbert J.
Shell Oil Company
Tackett Keith M.
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