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Water based coating composition and polymer film coated therewith
| Details |
Inventors: Touhsaent, Robert E.;
Assignee: Mobil Oil Corporation (New York, NY)
Primary Examiner: Foelak; Morton
Assistant Examiner: Nutter; Nathan M.
Attorney, Agent or Firm: McKillop; Alexander J., Gilman; Michael G., Speciale; Charles J.
A water based antistatic coating composition comprising: (a) at least one water soluble antistatic agent which is acceptable for food packaging polymer films; (b) at least one water soluble or water dispersible film-forming polymer; and, (c) a solution or dispersion-forming amount of water. When applied to a polymer film substrate, the foregoing antistatic coating composition forms, upon drying, and adherent antistatic coating. |
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DETAILED DESCRIPTION What is claimed is: 1.
A water based antistatic polymer film coating composition comprising: (a) at least one water soluble antistatic agent which is acceptable for food packaging polymer films and which is selected from the group consisting of N-acyl sarcosinates and N,N-bis(2-hydroxyethyl) higher aliphatic amines; (b) at least one water soluble or water dispersible film-forming polymer; and, (c) a solution or dispersion-forming amount of water.
2.
The water based antistatic coating composition of claim 1 wherein the antistatic agent is a compound of the general formula ##STR3## wherein R.
sup.
1 is an alkyl radical of from 8 to about 22 carbon atoms, R.
sup.
2 is hydrogen, methyl or ethyl, R.
sup.
3 is hydrogen, alkyl of 1 to 4 carbon atoms hydroxyalkyl of 1 to 4 carbon atoms and M is hydrogen or a salt-forming moiety.
3.
The water based antistatic coating composition of claim 2 wherein the salt-forming moiety is an alkali metal, ammonium or propanol substituted moiety.
4.
The water based antistatic coating composition of claim 1 wherein the antistatic agent is alkali metal alkyl sarcosinate.
5.
The water based antistatic coating composition of claim 1 wherein the antistatic agent is sodium lauryl sarcosinate.
6.
The water based antistatic coating composition of claim 1 wherein the antistatic agent is a compound of the general formula ##STR4## wherein R is an alkyl or alkenyl group of from 8 to about 22 carbon atoms.
7.
The water based antistatic coating composition of claim 1 wherein the antistatic agent is an N,N-bis(2-hydroxyethyl)alkenyl or mixture of alkenyl and alkyl (C.
sub.
12-18) amines.
8.
The water based antistatic coating composition of claim 1 wherein the water soluble or water dispersible film-forming polymer is a cellulose ether.
9.
The water based antistatic coating composition of claim 1 wherein the water soluble or water dispersible film-forming polymer is a hydroxyethyl cellulose.
10.
The water based antistatic coating composition of claim 1 containing an antistatic-effective amount of antistatic agent and an antistatic agent-carrying amount of water dispersible film-forming polymer
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