Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1987-05-07
1988-12-13
Nielsen, Earl
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
525408, 528354, C08G 6308, C08G 6310
Patent
active
047911891
ABSTRACT:
Preparation of a macromolecular monomer of a lactone allows the preparation of copolymers of lactones with commonly available olefinically unsaturated monomers. There is no known method for the preparation of such copolymers. A cationic ring-opening polymerization of a lactone in conjunction with an unsaturated alcohol (propagator) having an acryloyl, allyl or styryl double bond, produces a polylactone macromer having an ethylenic double bond at one end and a hydroxyl group at the other. The polymerization proceeds by polyaddition of the lactone to the OH group which is the propagating species. The polylactone may include a polymeric or non-polymeric spacer. The propagator is a primary or secondary alcohol which, if cyclic may have a single internal double bond in one ring. The catalyst is an oxonium salt, or etherate of boron trifluoride. The macromer may be copolymerized with a wide variety of olefinically unsaturated monomers to form a macromer copolymer with pendant polylactone chains. In particular, block copolymers of terminally unsaturated macromers of ether-ester, or ester-ether structure may be tailored for specific applications.
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Csontos Alan A.
Lobo Alfred D.
Nielsen Earl
The B. F. Goodrich Company
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