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US 7,119,136 B2Granted
Flame-retardant thermoset composition, method, and article
AssigneeGeneral Electric Company
InventorsJohn Robert Campbell, Bryan Duffey, John Austin Rude, Prameela Susarla, Michael Alan Vallance, Gary William Yeager, Kenneth Paul Zarnoch
Life of this patent
Estimating the term…
Abstract
A curable composition includes a functionalized poly(arylene ether) resin, an acryloyl monomer, and a phosphorus flame retardant. The composition exhibits an improved balance of properties such as toughness, flame retardance, heat-resistance, and moisture resistance. It is useful, for example, as an encapsulant for semiconductor products.
Claims46
A curable composition, comprising:
- a functionalized poly(arylene ether) resin;
- an acryloyl monomer;
- and
- a phosphorus flame retardant having the formula
- wherein Md+ is a metal ion or an onium ion;
- d is 1, 2, 3, or 4 according to the identity of M and its oxidation state;
- each occurrence of R23 and R24 is independently C1–C18 hydrocarbyl;
- and each occurrence of m and n is 0 or 1.
5 more elements
A curable composition, comprising:
- a (meth)acrylate-capped poly(2,6-dimethyl-1,4-phenylene ether) resin, a (meth)acrylate-capped poly(2,6-dimethyl-1,4-phenylene ether-co-2,3,6-trimethyl-1,4-phenylene ether) resin, or a mixture thereof;
- an acryloyl monomer selected from trimethylolpropane tri(meth)acrylate, hexanediol di(meth)acrylate, cyclohexanedimethanol di(meth)acrylate, methacryloxypropyl trimethoxysilane, ethoxylated (2) bisphenol A dimethacrylate, 4-biphenyl (meth)acrylate, 4,4′-biphenol di(meth)acrylate, or mixtures thereof;
- an aluminophosphorus flame retardant having the formula
- wherein each occurrence of R23 and R24 is independently C1–C6 alkyl, and each occurrence of m and n is 0;
- a melamine polyphosphate represented by the formula
- wherein g has an average value of about 3 to about 10,000, and the ratio of f to g is about 0.5:1 to about 1.7:1;
- and
- fused silica.
5 more elements
A curable composition, comprising:
- about 5 to about 40 parts by weight of a (meth)acrylate-capped poly(2,6-dimethyl-1,4-phenylene ether) resin, a (meth)acrylate-capped poly(2,6-dimethyl-1,4-phenylene ether-co-2,3,6-trimethyl-1,4-phenylene ether) resin, or a mixture thereof;
- about 60 to about 95 parts by weight of an acryloyl monomer selected from trimethylolpropane tri(meth)acrylate, hexanediol di(meth)acrylate, cyclohexanedimethanol di(meth)acrylate, methacryloxypropyl trimethoxysilane, ethoxylated (2) bisphenol A di(meth)acrylate, 4-biphenyl (meth)acrylate, 4,4′-biphenol di(meth)acrylate, or mixtures thereof;
- about 1 to about 50 parts by weight of aluminum tris(diethylphosphinate);
- and
- about 0.1 to about 5 parts by weight of a melamine polyphosphate;
- about 100 to about 2,000 parts by weight of fused silica;
- wherein all parts by weight are based on 100 parts by weight total for the (meth)acrylate-capped poly(arylene ether) resin and the acryloyl monomer.
4 more elements
Dependencies are inferred from the claim text.