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US 2014/0234629 A1Published application
High heat polycarbonate and siloxane copolycarbonate blends that provide ductile high heat options for flame retardant applications
AssigneeSabic Innovative Plastics IP B.V.
InventorsXiaoyu Sun, Yaming Niu
Life of this patent
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Abstract
Polycarbonate blend compositions are provided. In particular, polycarbonate blend compositions having a combination of a high heat polycarbonate, a polycarbonate polysiloxane copolymer, an anti-drip agent comprising a perfluorinated polyolefin, and a flame retardant additive.
Claims30
A polycarbonate blend composition comprising:
- (a) a first polycarbonate having a glass transition temperature of greater than 170° C. as measured using a differential scanning calorimetry method, wherein the first polycarbonate is derived from:
- (i) one or more monomers having the structure HO-A1-Y1-A2-OH wherein each of A1 and A2 comprise a monocyclic divalent arylene group, and Y1 is a bridging group having one or more atoms;
- or
- (ii) polyester monomer units having the structure
- wherein D comprises one or more alkyl containing C6-C20 aromatic group(s), or one or more C6-C20 aromatic group(s), and T comprises a C6-C20 aromatic group;
- and
- (b) a second polycarbonate wherein the second polycarbonate is a polysiloxane block copolymer derived from
- (i) the structure
- wherein R comprises a C1-C30 aliphatic, a C6-C30 aromatic group, or a combination thereof, wherein Ar comprises one or more C6-C30 aromatic group(s), or one or more alkyl containing C6-C30 aromatic group(s), wherein E has an average value of 20-200;
- or
- (ii) the structure
- wherein R comprises a C1-C30 aliphatic, a C6-C30 aromatic group, or a combination thereof, wherein R6 comprise C6-C30 aromatic group, or a combination of a C6-C30 aromatic group and a C1-C30 aliphatic group, wherein E has an average value of 20-200;
- wherein the wt % siloxane of (b) is between 1-25%;
- (c) an anti-drip agent having a specific gravity of at least 1.52 g/cc, according to ASTM D 792-10, and an average particle size of 400 J/m comprising
- (i) a perfluorinated polyolefin;
- (ii) a unit derived from
- and
- (iii) a unit derived from acrylonitrile
- and
- (d) a flame retardant additive;
- wherein the wt % of siloxane of the blended composition is between 1.5 and 5%;
- wherein the blend composition has a heat deflection temperature (HDT) of at least 150° C. at 1.8 MPa, according to ASTM D 648-07;
- wherein the blend composition has a vicat softening temperature (Vicat B/50) of at least 170° C., according to ASTM D 1525-09;
- and
- wherein a molded article from the blend composition has a UL94 rating of V0 at 1.5 mm thickness.
22 more elements
An injection molded article comprising:
- (a) a first polycarbonate having a glass transition temperature of greater than 170° C. as measured using a differential scanning calorimetry method, wherein the first polycarbonate is derived from:
- (i) one or more monomers having the structure HO-A1-Y1-A2-OH wherein each of A1 and A2 comprise a monocyclic divalent arylene group, and Y1 is a bridging group having one or more atoms;
- or
- (ii) polyester monomer units having the structure
- wherein D comprises one or more alkyl containing C6-C20 aromatic group(s), or one or more C6-C20 aromatic group(s), and T comprises a C6-C20 aromatic group;
- and
- (b) a second polycarbonate wherein the second polycarbonate is a polysiloxane block copolymer derived from
- (i) the structure
- wherein R comprises a C1-C30 aliphatic, a C1-C30 aromatic group, or a combination thereof, wherein Ar comprises one or more C6-C30 aromatic group(s), or one or more alkyl containing C6-C30 aromatic group(s), wherein E has an average value of 20-200;
- or
- (ii) the structure
- wherein R comprises a C1-C30 aliphatic, a C6-C30 aromatic group, or a combination thereof, wherein R6 comprise C6-C30 aromatic group, or a combination of a C6-C30 aromatic group and a C1-C30 aliphatic group, wherein E has an average value of 20-200;
- wherein the wt % siloxane of (b) is between 1-25%;
- (c) an anti-drip agent having a specific gravity of at least 1.52 g/cc, according to ASTM D 792-10, and an average particle size of 400 μm comprising
- (i) a perfluorinated polyolefin;
- (ii) a unit derived from
- and
- (iii) a unit derived from acrylonitrile
- and
- (d) a flame retardant additive;
- wherein the article has the following characteristics:
- (a) a notched izod impact strength of at least 200 J/m at 23° C. at a thickness of 0.2 inches, according to ASTM D 256-10;
- (b) a UL94 rating of Vo at 1.5 mm thickness;
- (c) a heat deflection temperature (HDT) of at least 150° C. at 1.8 MPa, according to ASTM D 648-07;
- and
- (d) a vicat softening temperature (Vicat B/50) of at least 170° C., according to ASTM D 1525-09.
23 more elements
A polycarbonate blend composition comprising:
- (a) a 2-phenyl-3,3-bis-(4-hydroxyphenyl)phthalimidine (PPPBP)/bisphenol A (BPA) copolycarbonate;
- and
- (b) a second polycarbonate wherein the second polycarbonate is a polysiloxane block copolymer derived from
- (i) the structure
- wherein R comprises a C1-C30 aliphatic, a C6-C30 aromatic group, or a combination thereof, wherein Ar comprises one or more C6-C30 aromatic group(s), or one or more alkyl containing C6-C30 aromatic group(s), wherein E has an average value of 20-200;
- or
- (ii) the structure
- wherein R comprises a C1-C30 aliphatic, a C6-C30 aromatic group, or a combination thereof, wherein R6 comprise C6-C30 aromatic group, or a combination of a C6-C30 aromatic group and a C1-C30 aliphatic group, wherein E has an average value of 20-200;
- and
- wherein the wt % siloxane of (b) is between 1-25%;
- (c) a T-SAN anti-drip agent;
- and
- (d) perfluorobutane sulfonate (Rimar salt);
- wherein the wt % of siloxane of the blended composition is between 1.5 wt % and 5 wt %;
- wherein the blend composition has a heat deflection temperature (HDT) of at least 150° C. at 1.8 MPa according to ASTM D 648-07;
- wherein the blend composition has a vicat softening temperature (Vicat B/50) of at least 170° C. according to ASTM D 1525-09;
- and
- wherein a molded article from the blend composition has a UL94 rating of Vo at 1.5 mm thickness.
15 more elements
Dependencies are inferred from the claim text.