Flame-retardant carpet and composition for preparing the same
AssigneeAllied Chemical Corporation
InventorsPritam Singh Minhas, Bernard Sukornick
Life of this patent
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Abstract
Combinations of certain hydroxycarboxylic acids with certain metal oxides and hydroxides provide unexpectedly enhanced flame retardancy to carpets, said flame retardancy being durable to usual carpet cleaning procedures.
Claims50
A flame retardant carpet having a relatively pliable primary backing and a tufted surface, said surface being comprised of fibers selected from the group consisting of polyester and polyamide fibers, said carpet having from about 1 to 15 weight percent of a composition added thereto, said composition comprising:
- a. about 10 to about 90 weight percent of a polyvalent metal compound selected from the group consisting of oxides and hydroxides of tin, antimony, aluminum and zinc;
- and
- b. about 10 to about 90 weight percent of a hydroxycarboxylic acid selected from the group consisting of malic acid, citric acid, tartaric acid, gallic acid, and 2,4-dihydroxybenzoic acid.
In a process for producing a carpet having a relatively pliable primary backing through which polyamide or polyester fibers are tufted, the improvement which comprises adding to said carpet from about 1 to 15 weight percent of composition comprising:
- a. about 10 to about 90 weight percent of a polyvalent metal compound selected from the group consisting of oxides and hydroxides of tin, antimony, aluminum and zinc;
- and
- b. about 10 to about 90 weight percent of a hydroxycarboxylic acid selected from the group consisting of malic acid, citric acid, tartaric acid, gallic acid, and 2,4-dihydroxybenzoic acid;
- and curing said composition on the carpet at a temperature of about 100.degree. to 150.degree. C., whereby said carpet has improved flame retardancy and said flame retardancy has improved durability to carpet cleaning procedures.
A composition for increasing flame retardance of a carpet consisting essentially of:
- a. about 10 to about 90 weight percent of a polyvalent metal compound selected from the group consisting of oxides and hydroxides of tin, antimony, aluminum, and zinc;
- and
- b. about 10 to about 90 weight percent of a hydroxycarboxylic acid selected from the group consisting of malic acid, citric acid, tartaric acid, gallic acid, and 2,4-dihydroxybenzoic acid.
Dependencies are inferred from the claim text.