Patent ID: 11939445
Assignee: DDP SPECIALTY ELECTRONIC MATERIALS US 9, LLC
Field: Other special machines (Mechanical engineering)
Classification: CPC C | IPC C

Claim 0:
1. A masterbatch composition suitable for use as a flame retardant in extruded polymer foams, comprising:
(a) 20 to 40 parts by weight base resin comprising styrene homopolymer or copolymer;
(b) 1 to 16 parts by weight acid scavenger comprising an epoxy-based compound;
(c) 2 to 6 parts by weight antioxidant comprising an alkyl or aryl phosphite; and
(d) 45 to 60 parts by weight flame retardant comprising a non-hexabromocyclododecane (HBCD) brominated polymer or copolymer;
wherein the amounts of (a), (b), (c), and (d) total 100 parts by weight;
the masterbatch composition further comprising
(e) 0.6 to 10 parts by weight of water soluble pH moderator, based on 100 parts of base resin plus the at least one water soluble pH moderator.