Abstract:
The present invention provides novel cyclic phosphorus-containing compounds, namely hydroxyl-functional phospholene-1-oxides, serving as highly efficient reactive flame retardants in urethane systems, particularly in flexible polyurethane foams, semi-rigid and rigid polyurethane and polyisocyanurate foams. The invention further provides fire-retarded polyurethane compositions comprising said hydroxyl-functional phospholene-1-oxides.
Abstract:
The present invention provides fire -retarded rigid polyurethane foam comprising the reaction product of polyol and isocyanate foam forming components and a dialkyl phosphorus-containing compound, namely a reactive mono-hydroxyl-functional dialkyl phosphinates, as flame retardant, serving as highly efficient reactive flame retardant in said rigid polyurethane foam.
Abstract:
There is provided herein a composition containing (A) a phosphorus-containing aromatic polyester of the general formula (I) described herein which has a weight average molecular weight of from 1,000 to 20,000 and which is concurrently a flame retardant and an active ester curing agent, and, (B) a solvent, such as a solvent commonly used in thermosetting resin formulations and copper-cias laminate preparation.
Abstract:
There is provided herein a flame retardant and curing agent compound for curing thermosetting resins, e.g., epoxy resins, a composition comprising a thermosetting resin, e.g., epoxy resin and the curing agent, an article comprising the curing agent, and a method of making the curing agent.
Abstract:
There is provided herein a flame retardant composition comprising: a compound having the general formula (I): which has a weight average molecular weight of from about 1,000 to about 700,000, and (b) a polyphenylene ether and/or an oligomer thereof. There is also provided an article comprising the flame retardant composition, and a method of making the article.
Abstract:
The present invention provides dialkyl phosphorus-containing compounds, namely reactive mono-hydroxyl-functional dialkyl phosphinates, serving as highly efficient reactive flame retardants in flexible polyurethane foams. The invention further provides fire-retarded polyurethane compositions comprising said the reaction product of the mono-hydroxyl-functional dialkyl phosphinates with polyol and isocyanate foam forming components.
Abstract:
There is provided herein a curable epoxy composition comprising (a) at least one epoxy compound; (b) at least one oligomeric aromatic polyester phosphorus- containing curing agent; and, (c) at least one co-curing agent having a dielectric constant less than 4.0, or at least one co-curing agent which results in the cured epoxy composition having a dielectric constant of less than 4.0 and wherein the co-curing agent is other than the curing agent (b); and, an article comprising the curing agent, and a process of making a laminate.