Allyl terminated macromolecular monomers of polyethers

Details Allyl terminated macromolecular monomers of polyethers Allyl terminated macromolecular monomers of polyethers

1985-08-30

1988-02-02

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525404, 525918, 528421, 564292, 564294, 568674, 568675, C08G 6532, C08G 6504

Patent

active

047229780

ABSTRACT:
A cationic ring-opening polymerization of a cyclic ether ("CE") in conjunction with an unsaturated alcohol (propagator) having an allyl double bond, produces a polyether macromer having an allylic group near one end and a hydroxyl group at the other. The polymerization proceeds by polyaddition of the CE to the OH group which is the propagating species. The CE is an alkylene oxide or an aliphatic or aromatic glycidyl ether; the propagator is a primary or secondary alcohol which, if cyclic may have a single internal double bond in one ring. The catalyst is a Friedel-Crafts acid, strong protic organic or inorganic acid, oxonium salt, or the like. The macromer formed may be homopolymerized to yield a polyvinyl homomacromer with pendant chains of polymerized CE; or the CE may be copolymerized with a wide variety of olefinically unsaturated monomers to form a macromer copolymer; or, plural cyclic ethers may be (a) sequentially polymerized to form macromer block copolyethers, or, (b) polymerized randomly to form macromer copolyether copolymers. The cationically ring-opened macromer formed always contains a trace of a cyclic oligomer of the CE.

REFERENCES:
patent: 3417034 (1968-12-01), Hoy
patent: 3850856 (1974-11-01), Dreyfuss
patent: 4393199 (1983-07-01), Manser
patent: 4456773 (1984-06-01), Fock

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