Cellulose substrates with transparentized area and method of making
AssigneeThe Standard Register Company
InventorsRajendra Mehta, Hugh B. Skees
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Abstract
A cellulosic substrate which is suitable for use as a mailer or envelope and which has at least one transparentized portion is provided. A method of transparentizing a cellulosic substrate by the application of a transparentizing material which provides enhanced toner adhesion properties, fast penetration rates and which is cured by exposure to radiation is also provided. The addition of small amounts of water to the transparentizing material enhances penetration rates. Further, these transparentizing materials may be applied without the need for solvents. These features thus permit continuous, in-line transparentization.
Claims23
A method of transparentizing a cellulosic substrate which comprises;
- a) providing a cellulosic substrate;
- b) applying to a surface of the substrate a composition which includes at least one compound selected from compounds of the formula:
- ##STR9## wherein R" is any mono- or polyfunctional organic radical;
- R is H or CH.sub.3 ;
- R' is H or --C(O)C(R).dbd.CH.sub.2, with the proviso that --C(O)C(R).dbd.CH.sub.2 occurs at least once;
- x is an integer 0-4 and indicates the number of functional groups on R" which are reactive with ethylene or propylene oxide;
- z is an integer 1-4 and may vary independently of x and n;
- n is an integer 1-20 and is independent of x and z;
- and
- wherein if any of R, R', or R" are greater than one, their identities and the number of each may be the same or different;
- or ##STR10## wherein R" is any mono- or polyfunctional organic radical;
- R is H or CH.sub.3 ;
- R' is H or --C(O)C(R).dbd.CH.sub.2, with the proviso that --C(O)C(R).dbd.CH.sub.2 occurs at least once;
- x is an integer 0-4 and indicates the number of functional groups on R" which are reactive with ethylene or propylene oxide;
- z is an integer 1-4 and may vary independently of x and n;
- n is an integer 1-20 and is independent of x and z;
- and
- R'" is H or a group of the formula:
- ##STR11## wherein R, R', and n are as defined as above, wherein if any of R, R', R" or R'" are greater than one, their identities and the number of each may be the same or different;
- and
- c) curing the composition with radiation.
Dependencies are inferred from the claim text.