C08L61/16

Multiphase ferrites and composites comprising the same
11679991 · 2023-06-20 · ·

In an aspect, a multiphase ferrite comprises a Co.sub.2W phase that is optionally doped with Ru; a CFO phase having the formula Me.sub.r“Co.sub.1−rFe.sub.2+zO.sub.4, wherein Me” is at least one of Ni, Zn, or Mg, r is 0 to 0.5, and z is −0.5 to 6 0.5; and a CoRu-BaM phase having the formula BaCo.sub.x+yRu.sub.yFe.sub.12−(2/3)x−2yO.sub.19, wherein x is 0 to 2, y is 0.01 to 2; and the Ba can be partially replaced by at least one of Sr or Ca. In another aspect, a composite can comprise a polymer and the multiphase ferrite. In yet another aspect, a method of making a multiphase ferrite can comprise mixing and grinding a CoRu-BaM phase ferrite and a CFO phase ferrite to form a mixture; and sintering the mixture in an oxygen atmosphere to form the multiphase ferrite.

Multiphase ferrites and composites comprising the same
11679991 · 2023-06-20 · ·

In an aspect, a multiphase ferrite comprises a Co.sub.2W phase that is optionally doped with Ru; a CFO phase having the formula Me.sub.r“Co.sub.1−rFe.sub.2+zO.sub.4, wherein Me” is at least one of Ni, Zn, or Mg, r is 0 to 0.5, and z is −0.5 to 6 0.5; and a CoRu-BaM phase having the formula BaCo.sub.x+yRu.sub.yFe.sub.12−(2/3)x−2yO.sub.19, wherein x is 0 to 2, y is 0.01 to 2; and the Ba can be partially replaced by at least one of Sr or Ca. In another aspect, a composite can comprise a polymer and the multiphase ferrite. In yet another aspect, a method of making a multiphase ferrite can comprise mixing and grinding a CoRu-BaM phase ferrite and a CFO phase ferrite to form a mixture; and sintering the mixture in an oxygen atmosphere to form the multiphase ferrite.

THERMOSETTING RESIN COMPOSITION

Provided is a thermosetting resin composition which exhibits excellent workability, and which is capable of obtaining, as a result of being cured, a highly reliable cured product (molded article) exhibiting excellent heat resistance and mechanical strength. This thermosetting resin composition includes: a polyalkenyl phenol resin (A); an aromatic polymaleimide compound (B); and a polymerization initiator (C). The polyalkenyl phenol resin (A) has, in a molecule thereof, at least one aromatic ring unit (al) which has a phenolic hydroxyl group having a 2-alkenyl group bonded thereto, and at least one aromatic ring unit (a2) having a phenolic hydroxyl group which does not have a 2-alkenyl group bonded thereto. Each of the aromatic ring units is bonded by a linking group having a main chain which is not formed by an aromatic ring. When m represents the number of the aromatic ring units (a1), and n represents the number of the aromatic ring units (a2), the ratio of m to (m+n) is 40-90%. The polyalkenyl phenol resin (A) is included in an amount at which the amount of 2-alkenyl groups becomes 0.4-1.5 mol per mol of maleimide groups in the aromatic polymaleimide compound (B).

THERMOSETTING RESIN COMPOSITION

Provided is a thermosetting resin composition which exhibits excellent workability, and which is capable of obtaining, as a result of being cured, a highly reliable cured product (molded article) exhibiting excellent heat resistance and mechanical strength. This thermosetting resin composition includes: a polyalkenyl phenol resin (A); an aromatic polymaleimide compound (B); and a polymerization initiator (C). The polyalkenyl phenol resin (A) has, in a molecule thereof, at least one aromatic ring unit (al) which has a phenolic hydroxyl group having a 2-alkenyl group bonded thereto, and at least one aromatic ring unit (a2) having a phenolic hydroxyl group which does not have a 2-alkenyl group bonded thereto. Each of the aromatic ring units is bonded by a linking group having a main chain which is not formed by an aromatic ring. When m represents the number of the aromatic ring units (a1), and n represents the number of the aromatic ring units (a2), the ratio of m to (m+n) is 40-90%. The polyalkenyl phenol resin (A) is included in an amount at which the amount of 2-alkenyl groups becomes 0.4-1.5 mol per mol of maleimide groups in the aromatic polymaleimide compound (B).

RESIN COMPOSITION, MOLDED PRODUCT, COMPOSITE AND ITS USE
20230167295 · 2023-06-01 · ·

To provide a molded product which has a high flexural modulus and is excellent in heat resistance and impact resistance at a low temperature; and a resin composition from which the molded product can be obtained.

A resin composition comprising a polyaryl ether ketone, a fluorinated elastomer and an inorganic filler, wherein the proportion of the fluorinated elastomer to the total of the volume of the polyaryl ether ketone and the volume of the fluorinated elastomer, is from 1 to 45 vol %, the proportion of the inorganic filler is from 1 to 50 mass %, and the deflection temperature under load measured in accordance with ASTM D648 under a load of 1.82 MPa is higher than that of the following comparative composition; and a molded product of the resin composition:

comparative composition: a resin composition comprising a polyaryl ether ketone and a fluorinated elastomer and not containing an inorganic filler, wherein the type of the polyaryl ether ketone, the type of the fluorinated elastomer and the proportion of the volume of the fluorinated elastomer to the total of the volume of the polyaryl ether ketone and the volume of the fluorinated elastomer are the same as those of the above resin composition, except that the inorganic filler is not contained.

RESIN COMPOSITION, MOLDED PRODUCT, COMPOSITE AND ITS USE
20230167295 · 2023-06-01 · ·

To provide a molded product which has a high flexural modulus and is excellent in heat resistance and impact resistance at a low temperature; and a resin composition from which the molded product can be obtained.

A resin composition comprising a polyaryl ether ketone, a fluorinated elastomer and an inorganic filler, wherein the proportion of the fluorinated elastomer to the total of the volume of the polyaryl ether ketone and the volume of the fluorinated elastomer, is from 1 to 45 vol %, the proportion of the inorganic filler is from 1 to 50 mass %, and the deflection temperature under load measured in accordance with ASTM D648 under a load of 1.82 MPa is higher than that of the following comparative composition; and a molded product of the resin composition:

comparative composition: a resin composition comprising a polyaryl ether ketone and a fluorinated elastomer and not containing an inorganic filler, wherein the type of the polyaryl ether ketone, the type of the fluorinated elastomer and the proportion of the volume of the fluorinated elastomer to the total of the volume of the polyaryl ether ketone and the volume of the fluorinated elastomer are the same as those of the above resin composition, except that the inorganic filler is not contained.

Methods for Solid Freeform Fabrication

The present invention provides high performance polymer (HPP) compositions, methods, processes, and systems for the manufacture of three-dimensional articles made of polymers using molding or 3D printing. The HPP compositions comprise a first HPP dissolved in a solvent and a second HPP present as a solid.

Methods for Solid Freeform Fabrication

The present invention provides high performance polymer (HPP) compositions, methods, processes, and systems for the manufacture of three-dimensional articles made of polymers using molding or 3D printing. The HPP compositions comprise a first HPP dissolved in a solvent and a second HPP present as a solid.

MEMBRANE COMPRISING A BLEND OF POLYARYLETHERSULFONE AND POLYARYLETHERKETONE AND METHOD FOR MANUFACTURING THEREOF

The present invention relates to a composition for the manufacturing of a porous article, notably a membrane, which comprises a semi-crystalline polymer, an amorphous polymer and at least one water-soluble salt. The present invention also relates to a method for manufacturing said porous article and to its use for purifying fluid(s).

MEMBRANE COMPRISING A BLEND OF POLYARYLETHERSULFONE AND POLYARYLETHERKETONE AND METHOD FOR MANUFACTURING THEREOF

The present invention relates to a composition for the manufacturing of a porous article, notably a membrane, which comprises a semi-crystalline polymer, an amorphous polymer and at least one water-soluble salt. The present invention also relates to a method for manufacturing said porous article and to its use for purifying fluid(s).