Chain extension of polyethylene terephthalate with polyacyllacta

Details Chain extension of polyethylene terephthalate with polyacyllacta Chain extension of polyethylene terephthalate with polyacyllacta

1988-02-29

1989-08-15

Bleutge, John C.

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

Synthetic resins

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

525419, C08F 2020, C08F 2034, C08L 6702, C08L 7712

Patent

active

048576034

ABSTRACT:
High molecular weight polyethylene terephthalate resins in which there is used a chain extending agent having the formula: ##STR1## wherein A is any hydrocarbon group having the necessary number of available valences to bound itself to all of the acyl groups of the compound, Y is at least 1 and x is an integer of from 6 to 12.
Preferably, the chain extending agent is a bisacyllactam, such as terephthaloyl bislaurolactam.
The chain extending agent can be used in combination with a carboxyl reactive compound.

REFERENCES:
patent: 3553157 (1971-01-01), Dijkstra et al.
patent: 4499219 (1985-01-01), Buxbaum
patent: 4581419 (1986-04-01), Gabbert et al.
patent: 4640887 (1987-02-01), Nakamura et al.
patent: 4644051 (1987-02-01), Van Geenen
T. Shima et al., Adv. Chem Ser. 128, 183 (1973).
H. Inata et al., J. Appl. Polym. Sci. 30, 3325 (1985).
H. Inata et al., J. Appl. Polym. Sci. 32, 4581 (1986).

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