Water based coating composition and polymer film coated therewith

• US 4,785,032 A
• Filed: 09/08/1986
• Issued: 11/15/1988
• Est. Priority Date: 09/08/1986
• Status: Expired due to Term

• Current Assignee: Mobil Oil Corporation (Exxon Mobil Corporation)
• Original Assignee: Mobil Oil Corporation (Exxon Mobil Corporation)
• Inventors: Touhsaent, Robert E.
• Primary Examiner(s): Foelak, Morton
• Assistant Examiner(s): Nutter, Nathan M.
• Application Number:
  US06/905,091
• Time in Patent Office: 799 Days
• Field of Search: 524/42, 524/43, 524/44, 524/45, 524/46, 252/8.8, 252/500, 523/100, 106/162, 106/163.1, 106/170, 106/124, 106/126, 106/128, 260/DIG. 15, 260/DIG. 19, 260/DIG. 21
• US Class Current: 524/42
• CPC Class Codes: C08J 7/0427 with only one layer of a composition containing a polymer binder with more layers C08J7/042
• CPC Class Codes: C08J 7/043 Improving the adhesiveness of the coatings per se, e.g. forming primers adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50
• CPC Class Codes: C08J 7/044 Forming conductive coatings; Forming coatings having anti-static properties
• CPC Class Codes: C08J 7/046 Forming abrasion-resistant coatings; Forming surface-hardening coatings
• CPC Class Codes: C08K 5/20 Carboxylic acid amides
• CPC Class Codes: C08L 2666/28 Non-macromolecular organic substances
• CPC Class Codes: C09D 201/00 Coating compositions based on unspecified macromolecular compounds
• CPC Class Codes: C09K 3/16 Anti-static materials
• CPC Class Codes: Y10S 260/15 Antistatic agents not otherwise provided for
• CPC Class Codes: Y10S 260/16 Antistatic agents containing a metal, silicon, boron or phosphorus
• CPC Class Codes: Y10S 260/19 Non-high polymeric antistatic agents/n
• CPC Class Codes: Y10S 524/911 Composition to apply to a substrate to be destaticized
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]

Abstract

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.

Claims

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 R¹ is an alkyl radical of from 8 to about 22 carbon atoms, R² is hydrogen, methyl or ethyl, R³ 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_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.