Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1994-09-15
1997-11-11
Nagumo, Mark
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525299, 525250, 526174, 526175, C08F29702
Patent
active
056865341
ABSTRACT:
An initiation system for the anionic polymerization of (meth)acrylic monomers and, optionally, nonacrylic vinyl monomers is disclosed. The initiation system comprises (1) a functional initiator and (2) an alkali metal alcoholate having the formula R'OM', in which M' is an alkali metal and R' is a group R.sup.1 (OR.sup.2).sub.m where R.sup.1 is a C.sub.1 -C.sub.6 alkyl or arylalkyl radical, R.sup.2 is a C.sub.2 -C.sub.4 alkylene radical and m is equal to 1, 2 or 3. The initiation system is applied to the formation of (meth)acrylic homopolymers and block copolymers of (meth)acrylic monomers and, optionally, nonacrylic vinyl comonomers.
REFERENCES:
patent: 3285894 (1966-11-01), Lim et al.
D. M. Wiles et al., Effect of Lithium Alkoxides, The Butyllithium-Initiated Polymerization of Methyl Methacrylate, vol. 68, No. 7, Jul. 1964. pp. 1983-1987.
K F Purcell & J C Kotz Inorganic Chemistry, W B Saunders 1977 Philadelphia, p. 832.
G. Odian, "Principles of Polymerization," 2d Ed. pp. 372-380, Wiley, New York, (1981).
J. March, "Advanced Organic Chemistry," 4th Ed., pp. 17-23 and 263-269, Wiley, New York (1992).
AJ Gordon and RA Ford, "The Chemists Companion," pp. 107-108, 111-112, Wiley, New York (1972).
Fieser, LF et al. Reagents for Organic Synthesis, Wiley, New York, 1967, pp. 711-712.
Bayard Philippe
Fayt Roger
Heim Philippe
Teyssie Philippe
Varshney Sunil K.
Elf Atochem S.A.
Nagumo Mark
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