Fluorine-containing synthetic resin shaped articles having improved surface properties and a method for the preparation thereof

• US 4,548,867 A
• Filed: 08/10/1983
• Issued: 10/22/1985
• Est. Priority Date: 08/13/1982
• Status: Expired due to Fees

• Current Assignee: Shin-Etsu Chemical Company Limited
• Original Assignee: Shin-Etsu Chemical Company Limited
• Inventors: Ueno, Susumu, Nomura, Hirokazu, Imada, Kiyoshi
• Primary Examiner(s): Niebling, John F.
• Application Number:
  US06/521,833
• Time in Patent Office: 804 Days
• Field of Search: 204/165, 204/169, 204/168, 427/40, 427/255.6, 264/22, 428/421, 428/422, 428/409
• US Class Current: 428/409
• CPC Class Codes: C08J 2327/12 containing fluorine atoms
• CPC Class Codes: C08J 7/123 Treatment by wave energy or particle radiation C08J7/18 takes precedence
• CPC Class Codes: Y10T 428/31 Surface property or characteristic of web, sheet or block
• CPC Class Codes: Y10T 428/3154 Of fluorinated addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31544 Addition polymer is perhalogenated

Abstract

The invention provides a shaped article of a fluorine-containing synthetic resin having improved surface properties such as increased wettability with water, printability, susceptibility to adhesive bonding and less accumulation of static electricity. The improved shaped article is obtained by subjecting the surface of the article to exposure to low temperature plasma generated in a low pressure atmosphere of a nitrogen-containing gaseous organic compound such as amines, imides and amides.

Claims

1. A shaped article of a fluorine containing synthetic resin characterized in that the surface thereof has been subjected to exposure to an atmosphere of low temperature plasma under a pressure of 10 Torr or below comprising a nitrogen-containing gaseous organic compound represented by the general formula ##STR2## in which R¹, R⁷, and R⁹ are each a substituted or unsubstituted monovalent hydrocarbon group, R², R³, R⁴, R⁵, R⁶, R¹⁰ and R¹¹ are each a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group and R⁸ is a substituted or unsubstituted divalent hydrocarbon group.

2. A method for improving the surface properties of a shaped article of a fluorine-containing synthetic resin which comprises subjecting the surface of the shaped article to exposure to an atmosphere of low temperature plasma under a pressure of 10 Torr or below comprising a nitrogen-containing gaseous organic compound represented by the general formula ##STR3## in which R¹, and R⁷, and R⁹ are each a sub stituted or unsubstituted monovalent hydrocarbon group, R², R³, R⁴, R⁵, R⁶, R¹⁰ and R¹¹ are each a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group and R⁸ is a substituted or unsubstituted divalent hydrocarbon group.

3. The method as claimed in claim 2 wherein the nitrogen-containing gaseous organic compound is selected from the class consisting of methyl amine, dimethyl amine, trimethyl amine, ethyl amine, diethyl amine, triethyl amine, n-propyl amine, di-n-propyl amine, tri-n-propyl amine, n-butyl amine, n-amyl amine, n-hexyl amine, lauryl amine, ethylene diamine, trimethylene diamine, hexamethylene diamine, ethanol amine, diethanol amine, allyl amine, aniline, N-methyl aniline, allyl dimethyl amine, di(2-aminoethyl) ether, 1-dimethylamino-2-chloro ethane, cyclopropyl amine, cyclohexyl amine, ethylene imine, 1-methyl ethylene imine, formamide, N,N-dimethyl formamide, capronamide, aminoacetal, benzyl amine, piperidine, pyrrolidine and morpholine.

4. The method as claimed in claim 2 wherein the pressure of the nitrogen-containing gaseous organic compound is in the range from 0.001 Torr to 1 Torr.

5. A shaped article of a fluorine containing synthetic resin characterized in that the surface thereof has been subjected to exposure to an atmosphere consisting essentially of low temperature plasma under a pressure of 10 Torr or below of a nitrogen-containing gaseous organic compound represented by the general formula ##STR4## in which R¹, R⁷, and R⁹ are each a substituted or unsubstituted monovalent hydrocarbon group, R², R³, R⁴, R⁵, R⁶, R¹⁰ and R¹¹ are each a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group and R⁸ is a substituted or unsubstituted divalent hydrocarbon group whereby the surface of the article has a thin modified layer of less than about 0.1 micron in thickness.

6. A method for improving the surface properties of a shaped article of a fluorine-containing synthetic resin which comprises subjecting the surface of the shaped article to exposure to an atmosphere consisting essentially of low temperature plasma under a pressure of 10 Torr or below of a nitrogen-containing gaseous organic compound represented by the general formula ##STR5## in which R¹, R⁷, and R⁹ are each a substituted or unsubstituted monovalent hydrocarbon group, R², R³, R⁴, R⁵, R⁶, R¹⁰ and R¹¹ are each a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group and R⁸ is a substituted or unsubstituted divalent hydrocarbon group.

7. The method as claimed in claim 6 wherein the nitrogen-containing gaseous organic compound is selected from the group consisting of methyl amine, dimethyl amine, trimethyl amine, ethyl amine, diethyl amine, triethyl amine, n-propyl amine, di-n-propyl amine, tri-n-propyl amine, n-butyl amine, n-amyl amine, n-hexyl amine, lauryl amine, ethylene diamine, trimethylene diamine, hexamethylene diamine, ethanol amine, diethanol amine, allyl amine, aniline, N-methyl aniline, allyl dimethyl amine, di(2-aminoethyl) ether, 1-dimethylamino-2-chloro ethane, cyclopropyl amine, cyclohexyl amine, ethylene imine, 1-methyl ethylene imine, formamide, N,N-dimethyl formamide, capronamide, aminoacetal, benzyl amine, piperidine, pyrrolidine and morpholine.

8. The method as claimed in claim 6 wherein the presure of the nitrogen-containing gaseous organic compound is in the range from 0.001 Torr to 1 Torr.