Polymer Powder Containing Polyamide Use of Said Powder in a Moulding Method and Moulded Body Produced From the Same

41:

• A polymer powder for use in a layer-by-layer process in which regions of the respective pulverulent layer are selectively melted via introduction of electromagnetic energy,
• which
• comprises at least one nylon-11 with an enthalpy of fusion of at least 125 J/g and with a recrystallization temperature of at least 148° C.

42:

• The polymer powder for use in a layer-by-layer process in which regions of the respective pulverulent layer are selectively melted via introduction of electromagnetic energy,
• which
• comprises at least one nylon-11 with an enthalpy of fusion of at least 130 J/g and with a recrystallization temperature of at least 150° C.

43:

• The polymer powder for use in a layer-by-layer process in which regions of the respective pulverulent layer are selectively melted via introduction of electromagnetic energy,
• which
• comprises at least one nylon-11 with an enthalpy of fusion of at least 125 J/g and with a recrystallization temperature of at least 148° C., and also has a BET surface area smaller than 6 m2/g and a median grain diameter of from 40 to 120 μm.

44:

• The polymer powder for use in a layer-by-layer process in which regions of the respective pulverulent layer are selectively melted via introduction of electromagnetic energy,
• which
• comprises at least one nylon-11 with an enthalpy of fusion of at least 125 J/g and with a recrystallization temperature of at least 148° C., and also has a BET surface area smaller than 5 m2/g and a median grain diameter of from 45 to 100 μm.

45:

• The polymer powder for use in a layer-by-layer process in which regions of the respective pulverulent layer are selectively melted via introduction of electromagnetic energy,
• which
• comprises at least one nylon-11 with an enthalpy of fusion of at least 125 J/g and with a recrystallization temperature of at least 148° C., and also has a BET surface area smaller than 5 m2/g and a median grain diameter of from 50 to 70 μm.

46:

• The polymer powder for use in a layer-by-layer process in which regions of the respective pulverulent layer are selectively melted via introduction of electromagnetic energy, the selectivity being achieved via the application of susceptors, or inhibitors, or of absorbers, or via masks,
• which
• comprises at least one nylon-11 with an enthalpy of fusion of at least 125 J/g and with a recrystallization temperature of at least 148° C., and also has a BET surface area smaller than 5 m2/g and a median grain diameter of from 50 to 70 μm.

47:

• The polymer powder for use in a layer-by-layer process in which regions of the respective pulverulent layer are selectively melted via introduction of electromagnetic energy, the selectivity being achieved via the focusing of a laser beam,
• which
• comprises at least nylon-11 with an enthalpy of fusion of at least 125 J/g and with a recrystallization temperature of at least 148° C., and also has a BET surface area smaller than 5 m2/g and a median grain diameter of from 50 to 70 μm.

48:

• The polymer powder as claimed in claim 41,
• which
• comprises at least nylon-11, prepared via polycondensation of ω-aminoundecanoic acid.

49:

• The polymer powder as claimed in claim 41,
• wherein
• the polyamide powder has been obtained via precipitative crystallization.

50:

• The polymer powder as claimed in claim 41,
• which
• comprises unregulated nylon-11.

51:

• The polymer powder as claimed in claim 41,
• which
• comprises regulated nylon-11.

52:

• The polymer powder as claimed in claim 41,
• which
• comprises partially regulated nylon-11.

53:

• The polymer powder as claimed in claim 41,
• wherein
• the regulator used comprises a mono-, di-, or polyamine.

54:

• The polymer powder as claimed in claim 41,
• wherein
• the regulator used comprises a mono-, di-, or polycarboxylic acid.

55:

• The polymer powder as claimed in claim 41,
• wherein
• the polyamide powder has a solution viscosity of from 1.4 to 2.1.

56:

• The polymer powder as claimed in claim 41,
• wherein
• the polyamide powder has a solution viscosity of from 1.5 to 1.9.

57:

• The polymer powder as claimed in claim 41,
• wherein
• the polyamide powder has a solution viscosity of from 1.6 to 1.7.

58:

• The polymer powder as claimed in claim 41,
• which
• comprises auxiliaries and/or filler.

59:

• The polymer powder as claimed in claim 58,
• which
• comprises powder-flow aids as auxiliary.

60:

• The polymer powder as claimed in claim 58,
• which
• comprises glass particles as filler.

61:

• The polymer powder as claimed in claim 58,
• which
• comprises metal soaps as auxiliary.

62:

• The polymer powder as claimed in claim 41,
• which
• comprises organic and/or inorganic pigments.

63:

• The polymer powder as claimed in claim 62,
• which
• comprises carbon black.

64:

• The polymer powder as claimed in claim 62,
• which
• comprises titanium dioxide.

65:

• A process for the production of moldings via a layer-by-layer process in which regions of the respective pulverulent layer are melted via introduction of electromagnetic energy, the selectivity being obtained via the application of susceptors, of inhibitors, or of absorbers, or via masks,
• which comprises
• using at least one nylon-11 whose enthalpy of fusion is at least 125 J/g and whose recrystallization temperature is at least 148° C.

66:

• A process for the production of moldings via a layer-by-layer process in which regions of the respective pulverulent layer are melted via introduction of electromagnetic energy, the selectivity being achieved via the focusing of a laser beam,
• which comprises
• using at least one nylon-11 whose enthalpy of fusion is at least 125 J/g and whose recrystallization temperature is at least 148° C.

67:

• A process for the production of moldings via selective laser sintering of polymer powder as claimed in claim 41.

68:

• A molding, produced via claim 65,
• which
• comprises at least one nylon-11 whose enthalpy of fusion is at least 125 J/g and whose recrystallization temperature is at least 148° C.

69:

• The molding as claimed in claim 65,
• which
• comprises at least nylon-11, prepared via polycondensation of ω-aminoundecanoic acid.

70:

• The molding as claimed in claim 65,
• which
• comprises polyamide powder which has been obtained via precipitative crystallization.

71:

• The molding as claimed in claim 65,
• which
• comprises a nylon-11 with a solution viscosity of from 1.4 to 2.1.

72:

• The molding as claimed in claim 65,
• which
• comprises a nylon-11 with a solution viscosity of from 1.5 to 1.9.

73:

• The molding as claimed in claim 65,
• which
• comprises a nylon-11 with a solution viscosity of from 1.6 to 1.7.

74:

• The molding as claimed in claim 65,
• which
• comprises auxiliaries and/or filler.

75:

• The molding as claimed in claim 65,
• which
• comprises powder-flow aids as auxiliary.

76:

• The molding as claimed in claim 65,
• which
• comprises glass particles as filler.

77:

• The molding as claimed in claim 65,
• which
• comprises metal soaps as auxiliary.

78:

• The molding as claimed in claim 65,
• which
• comprises organic and/or inorganic pigments.

79:

• The molding as claimed in claim 65,
• which
• comprises carbon black.

80:

• The molding as claimed in claim 65,
• which
• comprises titanium dioxide.