Compositions
AssigneeImerys Minerals Limited
InventorsJohn Claude Husband, Per Svending, David Robert Skuse
Life of this patent
Estimating the term…
Abstract
Compositions such as filled and coated papers may include microfibrillated cellulose and inorganic particulate material.
Claims21
1-26. (canceled)
A paper product comprising a co-processed microfibrillated cellulose and inorganic particulate material composition, wherein the paper product has:
- i) a first tensile strength greater than a second tensile strength of the paper product devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition;
- ii) a first tear strength greater than a second tear strength of the paper product devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition;
- and/or
- iii) a first burst strength greater than a second burst strength of the paper product devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition;
- and/or
- iv) first sheet light scattering coefficient greater than a second sheet light scattering coefficient of the paper product devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition;
- and/or
- v) a first porosity less than a second porosity of the paper product devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition;
- and/or
- vi) a first z-direction (internal bond) strength greater than a second z-direction (internal bond) strength of the paper product devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition.
A papermaking composition comprising a co-processed microfibrillated cellulose and inorganic particulate material composition, wherein the papermaking composition has:
- (i) a first cationic demand lower than a second cationic demand of the papermaking composition devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition;
- and/or
- (ii) a first, first-pass retention greater than a second, first-pass retention of the papermaking composition devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition;
- and/or
- (iii) a first ash retention greater than a second ash retention of the papermaking composition devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition.
A papermaking composition comprising a co-processed microfibrillated cellulose and inorganic particulate material composition, wherein the papermaking composition is substantially devoid of retention aids.
A paper product comprising a co-processed microfibrillated cellulose and inorganic particulate material composition, wherein the paper product has a first formation index lower than a second formation index of the paper product devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition.
Dependencies are inferred from the claim text.