An aromatic polyketone including, in a structural unit, at least one alicyclic skeleton and at least one carbon atom bound by two rotatable single bonds, or an aromatic polyketone including a structural unit represented by the following Formula (1), the following Formula (2), or the following Formula (4), and a structural unit represented by the following Formula (5) is provided. ##STR00001##

A polymer includes: a structural unit represented by the following Formula (I-1) and a structural unit represented by the following Formula (I-2). In Formulae (I-1) and (I-2), X and X each independently represent a divalent group having 6 to 50 carbon atoms and containing an aromatic ring; Y represents a divalent group having 5 to 50 carbon atoms, the divalent group including an alicyclic ring and alkylene groups, and the alkylene groups each having 1 to 10 carbon atoms connecting carbon atoms included in carbonyl groups adjacent to Y with the alicyclic ring; Y represents a divalent group having 3 to 50 carbon atoms and containing an alicyclic ring directly bonded to carbon atoms included in carbonyl groups adjacent to Y; and m and n each represent an integer from 3 to 1,000.

##STR00001##

A polymer includes: a structural unit represented by the following Formula (I-1) and a structural unit represented by the following Formula (I-2). In Formulae (I-1) and (I-2), X and X each independently represent a divalent group having 6 to 50 carbon atoms and containing an aromatic ring; Y represents a divalent group having 5 to 50 carbon atoms, the divalent group including an alicyclic ring and alkylene groups, and the alkylene groups each having 1 to 10 carbon atoms connecting carbon atoms included in carbonyl groups adjacent to Y with the alicyclic ring; Y represents a divalent group having 3 to 50 carbon atoms and containing an alicyclic ring directly bonded to carbon atoms included in carbonyl groups adjacent to Y; and m and n each represent an integer from 3 to 1,000.

##STR00001##

The invention provides a composition comprising an ethylene-based polymer and wherein the ethylene-based polymer has the following properties: (A) a CO content from greater than 0 to less than 10 weight percent CO (carbon monoxide), based on the weight of the polymer, and (B) a melt index (I2) from 0.1 to less than 3 g/10 min; and (C) a density from 0.923 to 0.928 g/cc; and wherein the ethylene-based polymer has a melting point, Tm, in C., that meets the following relationship: Tm ( C.)<601.4*(Density N in g/cc)447.8 C.

A semicrystalline poly ketone powder useful for additive manufacturing may be made by dissolving a polyketone having differential scanning calorimetry (DSC) monomodal melt peak, at a temperature above 50? C. to below the melt temperature of the polyketone, precipitating the dissolved polyketone by cooling, addition of a nonsolvent or combination thereof. The method may be used to form polyketones having a DSC melt peak with an enthalpy greater than the starting polyketone.

An aromatic polyketone including, in a structural unit, at least one alicyclic skeleton and at least one carbon atom bound by two rotatable single bonds, or an aromatic polyketone including a structural unit represented by the following Formula (1), the following Formula (2), or the following Formula (4), and a structural unit represented by the following Formula (5) is provided.

##STR00001##

An aromatic polyketone including, in a structural unit, at least one alicyclic skeleton and at least one carbon atom bound by two rotatable single bonds, or an aromatic polyketone including a structural unit represented by the following Formula (1), the following Formula (2), or the following Formula (4), and a structural unit represented by the following Formula (5) is provided.

##STR00001##

The present invention relates to a polyketone resin composition which is prepared from a polyketone co-polymer comprising repeating units represented by general formulae (1) and (2) below and exhibits excellent wear resistance and impact resistance, and thus can be used for gears, microwave containers, cams, helmet gears for electric welding, plastic boards, yarn guides, bedding cleaner cams, office supplies, window drums for automobiles, sun visor retainers, door frame inner covers for automobiles, safety belt jointers for automobiles, auto gear slides for automobiles, door latch housings for automobiles, slide guides for automobiles, switch shafts in heating, ventilation and air conditioning (HAVC) systems for automobiles, actuator gears for automobiles, trim mounting clips for automobiles, cup holders for automobiles, roof racks for automobiles, outside door handles for automobiles, air intake garnishes for automobiles, medical transportation trays, medical pipettes, refrigerator door closures, cellular phone polishing fixtures, ATM gears, etc.

[CH.sub.2CH.sub.2CO]x-(1)

[CH.sub.2CH(CH.sub.3)CO]y-(2)

(wherein x and y denote the mol % of each of the general formula (1) and (2) in a polymer, and y/x is from 0.03 to 0.3)

The present invention relates to a nonaqueous coating material composition comprising at least one compound (A) having at least two amino groups and at least one oligomeric and/or polymeric compound (B) having at least two alkylidene-1,3-dioxolan-2-one groups. Compound (B) is obtained using at least one monomer (B1) of formula (I) ##STR00001##
where R.sup.1-R.sup.6, A, X, Z, and Y are as set forth in the specification and at least two different comonomers (B2) and (B3) which are each different from the monomer (B1). The present invention further provides the coatings produced from these coating material compositions, and also the use thereof.

The present invention relates to a nonaqueous coating material composition comprising at least one compound (A) having at least two amino groups and at least one oligomeric and/or polymeric compound (B) having at least two alkylidene-1,3-dioxolan-2-one groups. Compound (B) is obtained using at least one monomer (B1) of formula (I) ##STR00001##
where R.sup.1-R.sup.6, A, X, Z, and Y are as set forth in the specification and at least two different comonomers (B2) and (B3) which are each different from the monomer (B1). The present invention further provides the coatings produced from these coating material compositions, and also the use thereof.