Compositions and coatings of phosphorus-containing film formers with organo silane and coated substrates
AssigneePPG Industries, Inc.
InventorsMichael W. Klett, Balbhadra Das
Life of this patent
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Abstract
Improved flame retardant coatings are produced from curable chemical mixtures having at least one phosphorus-containing film former which has hydroxyl and/or methylol functionalities, and at least one nucleophilic organo silane. The silane is capable of undergoing nucleophilic reaction with hydroxyl radical displacement and/or capable of Michael's addition type of reaction via a nucleophilic phosphine compound. Additionally, the curable chemical mixture can involve an interaction polymeric product of the phosphorus-containing film former and nucleophilic organo silane. Also solvents such as water, curing agents, fillers and/or extenders may be present in the mixture.
Claims24
A curable, chemical mixture for forming a flame retardant coating on hydroxyl-containing and/or inorganic oxide-containing surfaces, comprising:
- (a) phosphorus-containing film former having functionalities selected from the group consisting of hydroxyl and methylol or mixture thereof, and
- (b) at least one nucleophilic organo silane selected from the group consisting of organo silanes capable of undergoing nucleophilic reaction with hydroxyl radical displacement and organosilanes capable of Michael addition type of reaction via a nucleophilic phosphine compound.
A curable chemical mixture that is a resinous aqueous solution for forming a fire retardant coating on hydroxyl and/or oxide-containing substrates, comprising:
- (I) an aqueous soluble phosphorus-containing interaction polymer of:
- (A) methylol-containing quaternary phosphonium compound having radicals selected from the group consisting of methylol and hydroxyl or a mixture thereof,
- (B) divalent, nitrogen-containing compound having at least 2 active radicals selected from the group consisting of:
- hydrogen and methylol groups and mixtures thereof wherein said radicals are affiliated with a trivalent nitrogen, and
- (C) heteroatom-containing compound capable of reaction with radicals selected from the group consisting of methylol and hydroxyl, wherein the mole ratio of the components is about 1:1 to around 4:1 for Component A to Component b and at least 1:0.5 to around 4:1 for Component A to Component C, and
- (D) at least one nucleophilic organo silane selected from the group consisting of organo silanes capable of undergoing nucleophilic reaction with hydroxyl radical displacement and organosilanes capable of Michael addition type of reaction via a nucleophilic phosphine compound, and
- (II) water in an amount to provide a total solids of the aqueous solution in the range of up to around 95 weight percent.
A curable, chemical interaction product for forming a flame retardant coating on hydroxyl-containing and/or inorganic oxide-containing surfaces, comprising:
- (a) phosphorus-containing film former having functionalities selected from the group consisting of hydroxyl and methylol or mixtures thereof, and
- (b) at least one nucleophilic organo silane selected from the group consisting of organo silanes capable of undergoing nucleophilic reaction with hydroxyl radical displacement and organosilanes capable of Michael addition type of reaction via a nucleophilic phosphine compound.
Dependencies are inferred from the claim text.