Method of producing a polyether prepolymer

Details Method of producing a polyether prepolymer Method of producing a polyether prepolymer

1986-10-02

1988-12-20

Bleutge, John C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Unsubstituted hydrocarbyl chain between the ring and the -c-...

525408, 528312, 528326, 528425, 540525, 546188, 546189, 548519, 548543, 548550, 548551, C07D20700, C07D21136, C08G 6914

Patent

active

047926031

ABSTRACT:
A method for producing a polyether-polyamide block copolymer is disclosed, comprising copolymerizing, in the presence of an anionic polymerization catalyst, a lactam and a polyether prepolymer presented by the formula: ##STR1## wherein R.sup.1 is an aliphatic hydrocarbon residual group having 2 to 6 carbon atoms, R.sup.2 is an aliphatic hydrocarbon residual group having 3 to 12 carbon atoms, and n is an integer of 4 to 450. The polyester prepolymer is prepared by reacting a polyoxyalkylene having two terminal hydroxy groups with an N-chlorocarbonyl lactam. The polyether-polyamide block according to the invention has high impact strength and is substantially colorless.

REFERENCES:
patent: 4031164 (1977-06-01), Hedrick et al.
patent: 4442234 (1984-04-01), Kosa
patent: 4487920 (1984-12-01), Akikapeddi
patent: 4501861 (1985-02-01), Woodbrey
patent: 4507465 (1985-03-01), Chiba et al.
patent: 4590243 (1986-05-01), Gabbert et al.
patent: 4650608 (1987-03-01), Saegusa et al.
Yamashita et al, "Block Copolymerization v. Block Anionic Polymerization of Lactams", Journal of Polymer Science, vol. 10, Part A-1, No. 9 (1972), pp. 3577-3587.

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