Composition which contains a polyphenylene ether resin and a pol

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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524539, 525397, C08J 510, C08K 552, C08L 8502

Patent

active

050844962

ABSTRACT:
Thermoplastic molding compositions of blends of polyphenylene ethers and polyesters are improved in respect to impact resistance by the addition of an organophosphorus compound of the formula: ##STR1## wherein R.sub.1 when taken independently is selected from divalent hydrocarbon residues containing 2-12 carbon atoms; each of R.sub.2 -R.sub.5 when taken independently are selected from the group consisting of alkyl groups of 2 to 12 carbon atoms, aryl groups containing 6-14 carbon atoms, alkyl-substituted aryl groups, aralkyl groups, halogen-substituted alkyl groups, halogen-substituted aryl groups of 6-14 carbon atoms, halogen-substituted alkyl-substituted aryl groups, and halogen-substituted aralkyl groups; two groups selected from among R.sub.1 -R.sub.5 may be bonded together and form a ring; provided at least one member selected from among R.sub.1 -R.sub.5 has a carbon-carbon unsaturated double bond or triple bond, and at least one member selected from among R.sub.1 -R.sub.5 is an oxazoline residue; and n is an integer of 0-5. It is believed that the organophosphorus compound under the influence of heat during thermal processing functions to couple the polyphenylene ether to the polyester, therby improving impact resistance of molded articles.

REFERENCES:
patent: 4139574 (1979-02-01), Cooper et al.
patent: 4584332 (1986-04-01), Talley et al.
patent: 4672086 (1987-06-01), Seiler et al.
patent: 4845160 (1989-07-01), Sybert

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