Claims
- 1. The method of sizing paper which comprises the step of intimately dispersing within the wet pulp, prior to the ultimate conversion of said pulp into a dry web, a sizing agent which comprises the non-polymeric reaction product of maleic acid anhydride with a vinylidene olefin corresponding to ##EQU4## wherein R.sub.x and R.sub.y are alkyl radicals containing at least 5 carbon atoms in each radical.
- 2. The method of claim 1 in which the sizing agent is in the form of an aqueous emulsion.
- 3. A paper product having intimately dispersed within the wet pulp thereof, prior to its conversion into a dry web, a sizing agent which comprises the non-polymeric reaction product of maleic acid anhydride with a vinylidene olefin corresponding to ##EQU5## wherein R.sub.x and R.sub.y are alkyl radicals containing at least 5 carbon atoms in each radical.
- 4. A paper product having intimately dispersed within the wet pulp thereof, prior to its conversion into a dry web, (a) a sizing agent which comprises the non-polymeric reaction product of maleic anhydride with a vinylidene olefin corresponding to ##EQU6## wherein R.sub.x and R.sub.y are alkyl radicals containing at least 5 carbon atoms in each radical, and (b) at least 0.025%, based on the dry weight of the pulp, of a cationic agent.
- 5. The paper product of claim 4, in which said cationic agent is selected from the group consisting of alum, aluminum chloride, long chain fatty amines, substituted polyacrylamide, animal glue, polyamide polymers, cationic resins and cationic starch derivatives.
- 6. The method of sizing paper which comprises the steps of intimately dispersing within the wet pulp, prior to the ultimate conversion of said pulp into a dry web, (a) a sizing agent which comprises the non-polymeric reaction product of maleic acid anhydride with a vinylidene olefin corresponding to ##EQU7## wherein R.sub.x and R.sub.y are alkyl radicals containing at least 5 carbon atoms in each radical, and (b) at least 0.025%, based on the weight of the dry pulp, of a cationic agent.
- 7. The method of claim 6, in which said cationic agent is selected from the group consisting of alum, aluminum chloride, long chain fatty amines, substituted polyacrylamide, animal glue, polyamide polymers, cationic resins and cationic starch derivatives.
- 8. The method of claim 6, in which the sizing agent has been emulsified with a surfactant prior to its dispersion within the wet pulp.
- 9. The method of claim 6, in which the sizing agent is the reaction product of maleic acid anhydride with a mixture of vinylidene olefins of 16-20 carbon atoms.
Parent Case Info
This application is a continuation-in-part of application Ser. No. 404,595 filed Oct. 9, 1973, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3821069 |
Wurzburg |
Jun 1974 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
404595 |
Oct 1973 |
|