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US 4,078,016 AGranted
Halogenated aromatic polymer/metal phosphinate polymer flame retardant composition
AssigneeCelanese Corporation
InventorCharles E. Kramer
Life of this patent
Estimating the term…
Abstract
A composition having flame retardant properties is provided which comprises a blend of a synthetic aromatic polymer containing chlorine and bromine (as defined), with a linear metal phosphinate polymer (as defined), which composition may be dissolved by certain solvents to form a homogeneous solution readily adaptable to extrusion operations.
Claims29
A composition having flame retardant properties comprising
- A. a synthetic aromatic polymer containing chlorine, bromine, or mixtures thereof chemically bound to an aromatic ring and
- B. an amount sufficient to reduce the flammability of A up to about 20% by weight of A plus B of a linear polymeric metal phosphinate of the recurring structural formula selected from the group consisting of
- [M(OPRR'O).sub.m ].sub.n (I)
- [m'(b).sub.z (OPRR'O).sub.m ].sub.n (II)
- [m"(h.sub.2 o).sub.a (OH).sub.c (OPRR'O).sub.q . pH.sub.2 O].sub.n (III)
- wherein R and R' may be the same or different and represent alkyl or aryl radicals, M is a metal selected from the group consisting of Co, Mn, Cr, Ni, Zn, Zr, Ti, and M' is a member selected from the group consisting of Ti and Zr;
- B is a member selected from the group consisting of oxo, alkoxy, aryloxy and z equals 1 when B equals oxo, z equals 2 when B equals alkoxy and aryloxy and z equals 0 when m equals 3;
- M" is Cr(III);
- a+ p equals 1, q may vary from 1 to 3, c may vary from 0 to 3. m may vary from 1 to 3, and n is at least 10.
6 more elements
A composition having flame retardant properties comprising
- A. a halogenated aromatic polyester of the recurring structural formula ##STR18## where X is chlorine or bromine, R and R' may be the same or different and represent lower alkyl groups, hydrogen, or together constitute a cyclic hydrocarbon group, n = at least 25, with said aromatic polyester being a product of a tetrabromobisphenol and a mixture of 45 to 75 percent by weight of isophthalic acid or the ester forming derivatives thereof and correspondingly about 55 to 25 percent by weight of terephthalic acid or the ester forming derivatives thereof when X = Br, and with said halogenated polymer being a product of a tetrachlorobisphenol, and a mixture of 90 to 40 percent by weight isophthalic acid or the ester forming derivatives thereof and correspondingly about 10 to 60 percent by weight terephthalic acid or ester forming derivatives thereof when X = Cl, and
- B. an amount sufficient to reduce the flammability of A up to about 20% by weight of A plus B of a linear polymeric metal phosphinate of the recurring structural formula selected from the group consisting of
- [M(OPRR'O).sub.m ].sub.n (I)
- [m'(b).sub.z (OPRR'O).sub.m ].sub.n (II)
- [m"(h.sub.2 o).sub.a (OH).sub.c (OPRR'O).sub.q . pH.sub.2 O].sub.n (III)
- wherein R and R' may be the same or different and represent alkyl or aryl radicals, M is a metal selected from the group consisting of Co, Mn, Cr, Ni, Zn, Zr, Ti, and M' is a member selected from the group consisting of Ti and Zr;
- B is a member selected from the group consisting of oxo, alkoxy, aryloxy and z equals 1 when B equals oxo, z equals 2 when 8 equals alkoxy and aryloxy and z equals 0 when m equals 3;
- M" is Cr(III);
- and a+p equals 1;
- m may vary from 1 to 3;
- q may vary from 1 to 3;
- c may vary from 0 to 3 and n is at least 10.
9 more elements
A process for providing a composition having flame retardant properties comprising:
- blending
- A. a halogenated aromatic polyester of the recurring structural formula ##STR19## where X is chlorine or bromine, R and R' may be the same or different and represent lower alkyl groups, hydrogen, or together constitute a cyclic hydrocarbon group, n = at least 25, with said aromatic polyester being a product of a tetrabromobisphenol and a mixture of 45 to 75 percent by weight of isophthalic acid or the ester forming derivatives thereof and correspondingly about 55 to 25 percent by weight of terephthalic acid or the ester forming derivatives thereof when X = Br, and with said halogenated polymer being a product of a tetrachlorobisphenol, and a mixture of 90 to 40 percent by weight isophthalic acid or the ester forming derivatives thereof and correspondingly about 10 to 60 percent by weight terephthalic acid or ester forming derivatives thereof when X = Cl, with;
- B. an amount sufficient to reduce the flammability of A up to about 20% by weight of A plus B of a polymeric metal phosphinate of the recurring structural formula selected from the group consisting of
- [M(OPRR'O).sub.m ].sub.n (I)
- [m'(b).sub.z (OPRR'O).sub.m ].sub.n (II)
- [m"(h.sub.2 o).sub.a (OH).sub.c (OPRR'O).sub.q . pH.sub.2 O].sub.n (III)
- wherein R and R' may be the same or different and represent alkyl or aryl radicals, M is a metal selected from the group consisting of Co, Mn, Cr, Ni, Zn, Zr, Ti, M' is a member selected from the group consisting of Ti and Zr;
- B is a member selected from the group consisting of oxo, alkoxy, and aryloxy, z equals 1 when B equals oxo and z equals 2 when B equals alkoxy and aryloxy;
- z equals 0 when m equals 3;
- M" is Cr(III);
- a+p equals 1;
- q may vary from 1 to 3;
- m may vary from 1 to 3, c may vary from 0 to 3 and n is at least 10.
10 more elements
A composition having flame retardant properties comprising
- A. a halogenated aromatic polyester of the recurring structural formula ##STR20## where X is bromine, R and R' may be the same or different and represent lower alkyl groups, hydrogen, or together constitute a cyclic hydrocarbon group, n = at least 25, with said aromatic polyester being a product of tetrabromobisphenol A and a mixture of 45 to 75% by weight isophthalic acid or the ester forming derivatives thereof and correspondingly about 55 to 25 percent by weight of terephthalic acid or the ester forming derivatives thereof;
- and
- B. an amount sufficient to reduce the flammability of A up to about 20% by weight of A plus B of a linear polymeric metal phosphinate of the recurring structural formula selected from the group consisting of
- [M(OPRR'O).sub.m ].sub.n (I)
- [m'(b).sub.z (OPRR'O).sub.m ].sub.n (II)
- wherein R and R' may be the same or different and represent alkyl or aryl radicals, M is a metal selected from the group consisting of Co, Cr, Ni, Zn, Zr, Ti, and M' is a member selected from the group consisting of Ti and Zr;
- B is a member selected from the group consisting of oxo, alkoxy, aryloxy and z equals 1 when B equals oxo, z equals 2 when B equals alkoxy and aryloxy and z equals 0 when m equals 3;
- m may vary from 1 to 3;
- and n is at least 10.
6 more elements
A process for providing a composition having flame retardant properties comprising:
- blending
- A. a halogenated aromatic polyester of the recurring structural formula ##STR21## where X is bromine, R and R' may be the same or different and represent lower alkyl groups, hydrogen, or together constitute a cyclic hydrocarbon group, n = at least 25, with said aromatic polyester being a product of tetrabromobisphenol A and a mixture of 45 to 75 percent by weight of isophthalic acid or the ester forming derivatives thereof and correspondingly about 55 to 25 percent by weight of terephthalic acid or the ester forming derivatives thereof, with;
- B. an amount sufficient to reduce the flammability of A up to about 20% by weight of A plus B of a polymeric metal phosphinate of the recurring structural formula selected from the group consisting of
- [M(OPRR'O).sub.m ].sub.n (I)
- [m'(b).sub.z (OPRR'O).sub.m ].sub.n (II)
- wherein R and R' may be the same or different and represent alkyl or aryl radicals, M is a metal selected from the group consisting of Co, Mn, Cr, Ni, Zn, Zr, Ti, M' is a member selected from the group consisting of Ti and Zr;
- B is a member selected from the group consisting of oxo, alkoxy, and aryloxy, z equals 1 when B equals oxo and z equals 2 when B equals alkoxy and aryloxy;
- z equals 0 when m equals 3;
- m may vary from 1 to 3;
- and n is at least 10.
7 more elements
Dependencies are inferred from the claim text.