Fabric substrates
AssigneeEastman Kodak Company
InventorsJoseph Salvatore Sedita, Mridula Nair, Mary Christine Brick
Life of this patent
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Abstract
A fabric substrate is prepared from woven coated yarns. Each coated yarn has a yarn core and a coating disposed coaxially on the yarn core. This coating contains: (i) porous particles in an amount of 4-20 weight %, each porous particle comprising a continuous polymeric phase and discrete pores dispersed within the continuous polymeric phase, a mode particle size of 2-50 μm; (ii) a film-forming binder material having a Tg of less than or equal to 25° C., in an amount of 40-90 weight %; and (iii) an inorganic filler material having a value of less than 5 on the MOHS scale of mineral hardness, which inorganic filler material is present in an amount of 4-30 weight %.
Claims20
A fabric substrate comprising a plurality of coated yarns, all woven together, wherein each coated yarn comprises a yarn core;
- and a coating disposed coaxially on the yarn core, which coating comprises:
- (i) porous particles present in an amount of at least 4 weight % and up to and including 20 weight %, each porous particle comprising a continuous polymeric phase and discrete pores dispersed within the continuous polymeric phase, the porous particles having a mode particle size of at least 2 μm and up to and including 50 μm;
- (ii) a film-forming binder material having a Tg of less than or equal to 25° C., which film-forming binder material is present in an amount of at least 40 weight % and up to and including 90 weight %;
- and
- (iii) an inorganic filler material having a value of less than 5 on the MOHS scale of mineral hardness, the inorganic filler material being present in an amount of at least 4 weight % and up to and including 30 weight %,
- wherein the amounts of the (i) porous particles, the (ii) film-forming binder material, and the (iii) inorganic filler material are based on the total weight of the coating.
A fabric substrate comprising a plurality of continuous coated yarns, all woven together, wherein each continuous coated yarn comprises a multifilament polyester or glass core;
- and an aqueous-based coating disposed coaxially on the multifilament polyester or glass core, which aqueous-based coating comprises:
- (i) porous particles present in an amount of at least 4 weight % and up to and including 20 weight %, each porous particle comprising a continuous polymeric phase and discrete pores dispersed within the continuous polymeric phase, the porous particles having a mode particle size of at least 3 μm and up to and including 30 μm;
- (ii) a film-forming binder material having a Tg of less than or equal to 0° C., which film-forming binder material is present in an amount of at least 40 weight % and up to and including 90 weight %;
- and
- (iii) a non-abrasive, whitening inorganic filler material having a value of less than 5 on the MOHS scale of mineral hardness, which non-abrasive, whitening inorganic filler material comprises zinc sulfide and is present in an amount of at least 4 weight % and up to and including 30 weight %,
- wherein the amounts of the (i) porous particles, the (ii) film-forming binder material, the (iii) non-abrasive, and whitening inorganic filler material are based on the total weight of the aqueous-based coating,
- the fabric substrate has a L* of at least 70 and a Y tristimulus value of at least 65, and
- the (i) porous particles are present in the coating at a coverage of at least 4 g/m2.
Dependencies are inferred from the claim text.