Flame retardant brominated styrene-based coatings

In a composite material comprising a substrate and a latex coating adhered thereto, the improvement comprising the coating being a thermally and hydrolytically stable flame retardant latex material comprising:

• about 90 to about 5 weight percent of units from ring-brominated, ethylenically unsaturated aromatic monomer, said monomer including greater than about 1 and up to about 4 bromines per units;
• about 5 to about 90 weight percent of units from halogen-free aromatic monomer;
• and
• about 90 to about 5 weight percent of units from aliphatic conjugated diene having from 4 to 10 carbon atoms,
• said latex material having a molecular weight of at least about 25,000.

A composite material comprising:

• a. a substrate adapted to be coated;
• and
• b. a coating adhered to said substrate, said coating comprising a thermally and hydrolytically stable flame retardant latex material selected from the group consisting of:
• i. a latex comprising about 95 to about 5 weight percent of units from ring-brominated, ethylenically unsaturated aromatic monomer, said monomer including greater than about 1 and up to about 4 bromines per unit, and about 5 to about 95 weight percent of units from aliphatic conjugated diene monomer having from 4 to 10 carbon atoms, and
• ii. a latex comprising about 90 to about 5 weight percent of units from ring-brominated, ethylenically unsaturated aromatic monomer, said monomer including greater than about 1 and up to about 4 bromines per unit, about 5 to about 90 weight percent of units from halogen-free aromatic monomer, and about 90 to about 5 weight percent of units from aliphatic conjugated diene having from 4 to 10 carbon atoms,
• said latex material having a molecular weight of at least about 25,000.