Process for the preparation of polymer precursors containing oxa

Details Process for the preparation of polymer precursors containing oxa Process for the preparation of polymer precursors containing oxa

1981-07-24

1982-09-21

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521163, 525504, 528 62, 528 73, 528117, 528341, 528403, 528406, C08G 1832

Patent

active

043507816

ABSTRACT:
A polymer precursor containing an oxazolin-2-one ring is made by reacting (a) an amino-reactive group containing compound having at least two groups capable of entering into an addition or condensation reaction with primary or secondary aromatically-bound amino groups with (b) an aromatic amine having at least one primary or secondary aromatically-bound amino group and at least one condensed oxazolin-2-one ring. The reactants are used in quantities such that for each aromatically bound primary or secondary amino group there are from 0.95 to 5 groups present in the amino-reactive group containing compound which are capable of reacting with the amino group. These polymer precursors may be used to produce high molecular weight polymers useful in the production of solid molded products, adhesives, foam plastics and coatings.

REFERENCES:
patent: 3716520 (1973-02-01), Tomalia
patent: 3752793 (1973-08-01), Arlt et al.
patent: 3876618 (1975-04-01), Clarke
patent: 4191706 (1980-03-01), Marquis et al.
Kinstle et al., "Synthesis and Characterization of Linear and Crosslinked AB-Type Polyurethanes", Chem. Prop. Crosslinked Polym., [Proc ACS Symp.], pp. 21 through 47.

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