Expandable phenolic resin-coated composite beads, a process for production thereof and a process for molding thereof
AssigneeSekisui Kaseihin Kogyo Kabushiki Kaisha
InventorsKodo Masui, Shigetoshi Tanaka, Yoshikazu Kobayashi
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Abstract
Expandable phenolic resin-coated composite beads comprise an aggregate having coated thereon a solid, expandable resin composition comprising a solid, phenolic resin initial condensation product, a foaming agent and, if necessary, a hardening agent. The expandable phenolic resin-coated composite beads provide composite cellular moldings in which the aggregates are uniformly dispersed in a phenolic resin-expanded layer and are firmly adhered to the expanded layer. The composite cellular moldings can be adhered to a face plate to form integral laminates.
Claims19
An expandable phenolic resin-coated composite bead which comprises an aggregate coated with a solid, expandable resin composition comprising a solid, phenolic resin initial condensation product and a foaming agent.
A process for producing expandable phenolic resin-coated composite beads which comprises coating an aggregate with a solid, expandable resin composition using a binder, said resin composition comprising a solid, phenolic resin initial condensation product and a foaming agent.
A process for producing expandable phenol resin-coated composite beads which comprises heating an aggregate and bringing the heated aggregate into contact with a powdery, expandable thermoplastic resin composition which comprises a solid, phenolic resin initial condensation product and a foaming agent.
A process for molding expandable phenol resin-coated composite beads which comprises coating an aggregate with a solid, expandable resin composition comprising a solid, phenolic resin initial condensation product and a foaming agent to form expandable phenolic resin-coated beads, adding the expandable phenolic resin-coated beads to a mold and then foaming and hardening the expandable phenolic resin-coated beads by heating.
A process for molding a face plate-laminated phenol resin composite cellular molding which comprises coating an aggregate with a solid expandable resin composition comprising a solid, phenolic resin initial condensation product and a foaming agent to form expandable phenolic resin-coated composite beads, inserting a face plate in a mold, adding the expandable phenolic resin-coated composite beads therein and, foaming and hardening the expandable phenolic resin-coated beads by heating while adhesing them to the face plate.
Dependencies are inferred from the claim text.