Solventless process for producing resinous materials

Details Solventless process for producing resinous materials Solventless process for producing resinous materials

1985-11-19

1986-09-16

Welsh, Maurice J.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

26433112, 528 49, 528 73, 528 98, 528 99, 528102, 528106, 528109, 528110, 528112, 528115, 528121, 528122, 528123, 528124, B29F 300

Patent

active

046121560

ABSTRACT:
Resinous materials are produced in the substantial absence of a solvent by feeding to an extruder operated at a temperature sufficient to cause a reaction between the reactants (A) at least one material having an average of more than one vicinal epoxy group per molecule, (B) at least one material having an average of more than one group reactive with component (A) such as hydroxyl, thiol, carboxyl, isocyanate, thioisocyanate or secondary amine groups or a combination of such groups per molecule or a material having only one primary amine group per molecule, (C) at least one catalyst for promoting a reaction between components (A) and (B) if a catalyst is required to effect the reaction between components (A) and (B), and (D) optionally one or more chain terminators and thereafter recovering a resinous material resulting from the reaction between components (A) and (B) from said extruder.
This process is useful in preparing advanced epoxy resins and phenoxy thermoplastic resins.

REFERENCES:
patent: 4431600 (1984-02-01), Sakamoto et al.
patent: 4528342 (1985-07-01), Wilson

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