Cyclic pyrophosphites and compositions stabilized therewith

Details Cyclic pyrophosphites and compositions stabilized therewith Cyclic pyrophosphites and compositions stabilized therewith

1995-03-21

1995-12-12

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

558 78, C07F 96574, C08K 5527

Patent

active

054750423

ABSTRACT:
Novel cyclic pyrophosphite of formula I ##STR1## are prepared from the corresponding 6-chloro and 6-oxo phosphepins or phosphocins. The cyclic pyrophosphites are effective process stabilizers for organic materials subject to thermal, oxidative or actinic induced degradation, particularly polyolefins and especially polypropylene.

REFERENCES:
patent: 2691010 (1954-10-01), Anderson
patent: 2722539 (1955-11-01), Anderson
patent: 4143028 (1979-03-01), Spivack
patent: 4318845 (1982-03-01), Spivack et al.
patent: 4374219 (1983-02-01), Spivack et al.
patent: 4481317 (1984-11-01), Nakahara et al.
patent: 4524166 (1985-06-01), Spivack et al.
patent: 4912155 (1990-03-01), Burton
patent: 4999393 (1991-03-01), Haruna et al.
patent: 5292785 (1994-03-01), Pastor et al.
Index Chemicus, vol. 28, #1, Jan. 2, 1968, abstract No. 89519.
Helvetica Chimica Acta vol. 76 (1993).
Phosphorus and Sulfur, 1984, vol. 19 pp. 285-293.
Phosphorus and Sulfur, 1984, vol. 19 pp. 1-10.
Phosphorus and Sulfur, 1983, vol. 15, pp. 253-256.
J. Heterocyclic Chem., 20, 1311 (1983).
Phosphorus and Sulfur, 1983, vol. 15, pp. 9-13.
J. P. Spivack, et al., Polymer Stabilization and Degradation, P. P. Klemchuk pp. 247-257.

Affiliated with

Also associated with

Rating

Cyclic pyrophosphites and compositions stabilized therewith does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cyclic pyrophosphites and compositions stabilized therewith, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cyclic pyrophosphites and compositions stabilized therewith will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1360297