A composition useful for additive manufacturing is comprised of a thermoplastic elastomer blended with an aliphatic polyketone, wherein the thermoplastic elastomer is a continuous phase having dispersed therein separated domains of polyketone. The composition is useful for additive printing methods employing heating and extrusion of the composition to form extrudates that are printed an article comprised of fused layers of the composition. The composition facilitates the formation of extrusion based elastomeric additive manufactured articles.

A polymer includes a first structural unit represented by formula (1-1), (1-2) or (1-3) and a second structural unit represented by formula (2) or (3). In the formulae (1-1) to (1-3), (2) and (3), R.sup.1, R.sup.10 and R.sup.11 each represent a halogen atom, a monovalent hydrocarbon group having 1 to 20 carbon atoms, a monovalent halogenated hydrocarbon group having 1 to 20 carbon atoms, a nitro group or a cyano group; Zs each represent —O— or —S—; R.sup.4s each represent a methylene group or an alkylene group having 2 to 4 carbon atoms; and L represents a divalent group represented by formula (2-1). In the formula (2-1), R.sup.a represents a divalent alicyclic hydrocarbon group having 5 to 30 ring atoms or a divalent fluorinated alicyclic hydrocarbon group having 5 to 30 ring atoms.

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The present invention relates to a polyketone copolymer consisting of repeating units represented by general formulae (3) and (4) below, and a mixture composition thereof. The present invention has excellent has barrier properties and thus can be used for vehicle fuel tanks, vehicle hydrogen tank liners, sealed food containers, etc.

—(CH2CH2—CO)x—  (3)

—(CH2CH(CH3)—CO)y—  (4)

(wherein x and y denote the mol % of each of the general formulae (3) and (4) in a polymer).

The present invention relates to a polyketone copolymer consisting of repeating units represented by general formulae (3) and (4) below, and a mixture composition thereof. The present invention has excellent has barrier properties and thus can be used for vehicle fuel tanks, vehicle hydrogen tank liners, sealed food containers, etc.

—(CH2CH2—CO)x—  (3)

—(CH2CH(CH3)—CO)y—  (4)

(wherein x and y denote the mol % of each of the general formulae (3) and (4) in a polymer).

This invention relates to polyetheramines based on 1,3-dialcohols, in particular to an etheramine mixture comprising at least 90% by weight, based on the total weight of the etheramine mixture, of an amine of Formula (I) and/or (II),

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wherein R.sub.1-R.sub.12 are independently selected from H, alkyl, cycloalkyl, aryl, alkylaryl, or arylalkyl, wherein at least one of R.sub.1-R.sub.6 and at least one of R.sub.7-R.sub.12 is different from H, wherein A.sub.1-A.sub.9 are independently selected from linear or branched alkylenes having 2 to 18 carbon atoms, wherein Z.sub.1-Z.sub.4 are independently selected OH, CH.sub.2CH.sub.2CH.sub.2NH.sub.2, NH.sub.2, NHR′ or NR′R″, wherein the degree of amination is <50%, wherein R′ and R″ are independently selected from alkylenes having 2-6 carbon atoms, and wherein the sum of x+y is in the range of from 2 to 200, wherein x≧1 and y≧1; and x.sub.1+y.sub.1 is in the range of from 2 to 200.

The present invention relates to a tetraester-based plasticizer composition characterized in including a product derived from esterification reaction of an isomer mixture of hexanoic acid and a tetraol, wherein the degree of branching of the isomer mixture of hexanoic acid is 2.0 or less. If the plasticizer composition is applied to a resin, plasticization efficiency and absorption rate may be maintained to equal or better levels when compared to a case applying the conventional plasticizer, and mechanical properties, migration resistance, stress migration and loss properties may be markedly improved.

The present invention relates to a tetraester-based plasticizer composition characterized in including a product derived from esterification reaction of an isomer mixture of hexanoic acid and a tetraol, wherein the degree of branching of the isomer mixture of hexanoic acid is 2.0 or less. If the plasticizer composition is applied to a resin, plasticization efficiency and absorption rate may be maintained to equal or better levels when compared to a case applying the conventional plasticizer, and mechanical properties, migration resistance, stress migration and loss properties may be markedly improved.

The present invention provides a helmet, comprising first and second components having a sliding interface between them, wherein the sliding interface is provided between respective sliding surfaces of the first and second components, and the first component comprises a polyketone.

The present invention provides a helmet, comprising first and second components having a sliding interface between them, wherein the sliding interface is provided between respective sliding surfaces of the first and second components, and the first component comprises a polyketone.

An aliphatic polyketone compound including 85.0 to 99.5 wt % aliphatic polyketone and 0.5 to 15.0 wt % ultra-high molecular weight polyethylene. An aliphatic polyketone compound described where the ultra-high molecular weight polyethylene is 2.0 to 8.0 wt %. An aliphatic polyketone compound where the ultra-high molecular weight polyethylene has a molecular weight greater than 1.0 million g/mol.