Patent · US Active

Ceramic precursor batch compositions for increased stiffening onset temperature using organic additive heteroatom polyols

US9850171B2 · kind B2 · utility

2Cited by
6References
10Claims
0Family size

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Inventor

Key dates

Filing dateDec 7, 2015
Grant dateDec 26, 2017
Priority date—
Expiry dateJun 21, 2036

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC04B2235/6021
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

A ceramic precursor batch composition comprising inorganic ceramic-forming ingredients, a binder, an aqueous solvent and a heteroatom polyol agent. The heteroatom polyol agent can be represented by X(R) where X is at least one of S, N, and P, and R is at least two of CH3, CH2CH2OH, CH2CH2CH2OH, CH2(CHOH)CH3, C(CH2OH)1-3, CH2OH, CH(CH2OH)CHOH, C(O)(CHOH)1-4CH2OH, and CH2CH2CH2OCH3. The presence of the heteroatom polyol agent provides a composition with a lower viscosity and/or a greater batch stiffening temperature (Tonset) allowing for increased rates of extrusion. Methods for producing a ceramic honeycomb body using this ceramic precursor batch composition are also provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.