Flame retardant surface coverings
View Patent ↗Flame retardant polymer compositions, especially ionomer polymer compositions, are prepared using ethylene diamine phosphate and used as surface coverings and building materials.
1. An article comprising:
a) a first layer comprising acrylate polymer and ethylene diamine phosphate; and
b) a second layer comprising an ionomer polymer
wherein the acrylate polymer selected from copolymer of ethylene, n-butyl acrylate, and carbon monoxide; copolymer of ethylene, n-butyl acrylate, and glycidyl methacrylate, copolymer of ethylene and methyl acrylate; copolymer of ethylene and ethyl acrylate; copolymer of ethylene and butyl acrylate; copolymer of ethylene, methyl acrylate, and vinyltrimethylsilane; copolymer of ethylene, ethyl acrylate, and vinyltrimethylsilane; copolymer of ethylene butyl acrylate, and vinyltrimethylsilane; copolymer of ethylene, methyl acrylate, and vinyltriethylsilane; copolymer of ethylene, ethyl acrylate, and vinyltriethylsilane; copolymer of ethylene butyl acrylate, and vinyltriethylsilane; ethylene/acrylic elastomer; ionomer of ethylene and acrylic acid; or ionomer of ethylene and methacrylic acid.
2. The article of claim 1 in the form of a sheet.
3. The sheet of claim 2 covering a surface of an article selected from the group consisting of a wall, ceiling, floor covering, and an external or internal surface covering for an automobile, motorcycle or truck.
4. The article of claim 1 or the sheet of claim 2 wherein the flame resistance is DIN 1402-14 as measured by the German Institute for Standardization method.
5. The article of claim 1 or sheet of claim 2 wherein the ionomer polymer is transparent.
6. The article or sheet of claim 4 wherein the ionomer polymer in the second layer is copolymer of ethylene and ethylenically unsaturated C 3 –C 8 carboxylic acid; copolymer of ethylene, ethylenically unsaturated C 3 –C 8 carboxylic acid, and one or more softening comonomer selected from an alkyl acrylate or an alkyl vinyl ether; and mixtures of two or more of said copolymers; wherin the alkyl acrylate is methyl acrylate, n-propyl acrylate, iso-butyl acrylate, n-butyl acrylate, n-octyl acrylate, 2-ethylhexyl acrylate, or 2-methoxyethyl acrylate, and the alkyl vinyl ether is n-butyl vinyl ether, n-hexyl vinyl ether, 2-ethylhexyl vinyl ether, or 2-methoxyethyl vinyl ether.
7. An article of claim 1 or sheet of claim 2 wherein the ionomer has about 10–70% of the carboxylic acid groups neutralized with sodium ions, potassium ions, zinc ions, calcium ions, lithium ions, or magnesium ions.
8. The article as of claim 1 or sheet as of claim 2 wherein the acrylate polymer is a copolymer of ethylene methyl acrylate, copolymer of ethylene and ethyl acrylate, or copolmer of ethylene and butyl acrylate.
9. The article of claim 1 or sheet of claim 2 wherein the ethylene diamine phosphate is present in the range of about 51 weight percent to about 80 weight percent in the first layer.
10. The article or sheet of claim 9 wherein the ethylene diamine phosphate is present in the range of about 60 weight percent to about 65 weight percent in the first layer.