Paper and paper laminates containing modified titanium dioxide
AssigneeE. I. Du Pont de Nemours and Company
InventorErik Shepard Thiele
Life of this patent
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Abstract
The present invention pertains to a laminate paper and a paper laminate made from such paper. More specifically, the laminate paper contains an amino organosilane surface-modified titanium dioxide pigment.
Claims19
A laminate comprising a paper comprising an impregnating resin a cellulose pulp, and a titanium dioxide pigment comprising an amino organosilane on its surface, the titanium dioxide pigment is in an amount of about 45 wt. % or less based on the total dry weight of the paper prior to resin impregnation, wherein the amino organosilane has the general formula (I)
- wherein:
- R1 and R2 are each individually selected from the group consisting of hydrogen, alkyl, aryl, cycloalkyl, alkylaryl, alkenyl, cycloalkenyl, alkene, alkylene, arylene, alkylarylene, arylalkylene and cycloalkylene;
- R3, R4 and R5 are each individually selected from the group consisting of hydrogen, lower alkyl, aryl, lower alkylaryl, lower arylalkyl, alkenyl, cycloalkenyl, alkene, alkylene, arylene, alkylarylene, arylalkylene and cycloalkylene;
- and
- X is alkyl, aryl, alkylaryl, arylalkyl, cycloalkyl, alkenyl, cycloalkenyl, alkene, alkenylene, cycloalkenylene, alkylene, arylene, alkylarylene, arylalkylene, cycloalkylene, with or without secondary or tertiary nitrogen pendant from the chain or other functional groups.
A laminate comprising a paper comprising an impregnating resin, a cellulose pulp, and a titanium dioxide pigment comprising an amino organosilane on its surface, the titanium dioxide pigment is in an amount of about 45 wt % or less based on the total dry weight of the sheet prior to resin impregnation,
- wherein the amino organosilane is selected from the group consisting of aminoethyl trimethoxysilane, aminoethyl triethoxysilane, aminopropyl trimethoxysilane, aminopropyl triethoxysilane, methylaminopropyl trimethoxysilane, ethylaminopropyl trimethoxysilane, aminopropyl tripropoxysilane, aminoisobutyl trimethoxysilane, and aminobutyl triethoxysilane.
A composition comprising a, cellulose pulp, and a titanium dioxide pigment comprising an amino organosilane on its surface, the titanium dioxide pigment is in an amount of about 45 wt. % or less of the composition when it is dried wherein the amino organosilane has the general formula (I)
- wherein:
- R1 and R2 are each individually selected from the group consisting of hydrogen, alkyl, aryl, cycloalkyl, alkylaryl, alkenyl, cycloalkenyl, alkene, alkylene, arylene, alkylarylene, arylalkylene and cycloalkylene;
- R3, R4 and R5 are each individually selected from the group consisting of hydrogen, lower alkyl, aryl, lower alkylaryl, lower arylalkyl, alkenyl, cycloalkenyl, alkene, alkylene, arylene, alkylarylene, arylalkylene and cycloalkylene;
- and
- X is alkyl, aryl, alkylaryl, arylalkyl, cycloalkyl, alkenyl, cycloalkenyl, alkene, alkenylene, cycloalkenylene, alkylene, arylene, alkylarylene, arylalkylene, cycloalkylene, with or without secondary or tertiary nitrogen pendant from the chain or other functional groups.
A paper comprising a cellulose pulp and a titanium dioxide pigment comprising an amino organosilane on its surface, the titanium dioxide pigment is in an amount of about 45 wt % or less based on the total dry weight of the paper.
A composition comprising a cellulose pulp and a titanium dioxide pigment, comprising an amino organosilane on its surface, in an amount of about 45 wt % or less of the composition when it is dried.
Dependencies are inferred from the claim text.