Polymers adherent to polyolefins

• US 4,507,342 A
• Filed: 10/19/1983
• Issued: 03/26/1985
• Est. Priority Date: 05/08/1979
• Status: Expired due to Term

• Current Assignee: Rohm and Haas Company (Dow, Inc.)
• Original Assignee: Rohm and Haas Company (Dow, Inc.)
• Inventors: Kielbania, Andrew J. Jr.
• Primary Examiner(s): HERBERT JR, THOMAS
• Application Number:
  US06/543,589
• Time in Patent Office: 524 Days
• Field of Search: 428/343, 428/516, 428/518, 428/522, 428/290, 428/90, 428/394
• US Class Current: 428/90
• CPC Class Codes: B05D 7/02 to macromolecular substances, e.g. rubber treatment or coating of shaped articles made of macromolecular substances C08J7/00
• CPC Class Codes: B32B 37/12 characterised by using adhesives
• CPC Class Codes: C08J 2323/02 not modified by chemical after treatment
• CPC Class Codes: C08J 2433/00 Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
• 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 7/046 Forming abrasion-resistant coatings; Forming surface-hardening coatings
• CPC Class Codes: C08J 7/048 Forming gas barrier coatings
• CPC Class Codes: C09D 133/14 of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
• CPC Class Codes: C09D 133/26 Homopolymers or copolymers of acrylamide or methacrylamide
• CPC Class Codes: Y10T 428/23943 Flock surface
• CPC Class Codes: Y10T 428/2967 Synthetic resin or polymer
• CPC Class Codes: Y10T 428/31913 Monoolefin polymer
• CPC Class Codes: Y10T 428/31935 Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 442/291 Coated or impregnated polyolefin fiber fabric

Abstract

This invention is concerned with an article comprising an untreated polyolefin substrate and adherent thereto a vinyl addition polymer of monomers comprising at least 5% by weight a primary monomer selected from

(a) monomers having the formula ##STR1## wherein X is --O--, --NH-- or --NR⁵ --;

R¹ and R⁷, individually, are H, methyl or ethyl;

R² is H or an organic radical, preferably --COOH, --CONH₂ or --COOR⁶ ;

R³ is H or an organic radical, preferably methyl, other alkyl having up to about five carbon atoms, --CH₂ COOR⁶, --COOR⁶ or --CH₂ COOH;

R⁴ and R⁵, individually, are monocyclic alkyl having six or more carbon atoms, acyclic alkyl having nine or more carbon atoms, or alkaryl having nine or more carbon atoms;

R⁶ is hydrocarbyl, preferably alkyl;

n has a value from zero to about ten;

(b) vinyl esters of alkanoic acids having at least eight carbon atoms;

(c) alkyl substituted styrenes wherein the substituent group or groups have a total of three or more carbon atoms;

and mixtures thereof; said polymer having surface energy properties such as to form a stable bond with said substrate.

The polymer, used alone or in a blend with other polymers, serves as a coating, a tiecoat, an adhesive or a binder.

Claims

1. An article comprising an untreated polyolefin substrate and adherent thereto, a blend of a first latex polymer and a vinyl addition adherent latex polymer of monomers consisting essentially of ( 1) at least 5% by weight of a primary monomer selected from

(a) monomers having the formula ##STR5## wherein X is --O--, --NH-- or --NR⁵ --;

R¹ and R⁷, individually, are H, methyl or ethyl;

R² is H, --COOH, --CONH₂, or --COOR⁶ ;

R³ is H, alkyl having up to 5 carbon atoms, --CH₂ COOR⁶, --COOR⁶ or --CH₂ COOH;

R⁴ and R⁵, individually are monocyclic alkyl having six to twenty carbon atoms, acrylic alkyl having nine to twenty carbon atoms, or alkaryl having nine to eighteen carbon atoms;

R⁶ is hydrocarbyl; and

n having a value of from zero to about ten;

(b) vinyl esters of alkanoic acids having eight to twenty carbon atoms;

(c) alkyl substituted styrene wherein the substituent group or groups have a total of three to fifteen carbon atoms; and

mixtures thereof;

said adherent polymer having surface energy properties such as to form a stable bond with said substrate.

2. The article of claim 1 wherein the substrate is a flock.

3. The article of claim 1 wherein the substrate is a nonwoven.

4. The article of claim 1 wherein the substrate is a film.

5. The article of claim 1 wherein the substrate is a rigid sheet.

6. The article of claim 1 wherein the substrate is a yarn.

7. The article of claim 1 wherein the substrate is monofilament.

8. The article of claim 1 wherein the vinyl addition polymer contains one or more substituted ethylene supplementary monomers.

9. The article of claim 1 having at least 2% of the adherent latex polymer in the blend and wherein the adherent latex polymer has a total surface energy between about 22 and 42 dynes per cm, said energy having a nonpolar dispersive component between about 20 and about 38 dynes per cm and a polar component up to about 15 dynes per cm, the polar component being not over 36% of the total surface energy, the adherent latex polymer also having an average solubility greater than 0.25 gm. per 100 ml. in isooctane, n-pentane, 1-hexane, diisobutylene and cyclohexane;

the monomers consisting of primary and supplementary monomers wherein the supplementary monomer or monomers have an average solubility parameter, by weight, of 8.8 or less.

10. The article of claim 9 wherein the primary monomer comprises at least 25% by weight of (a), (b), (c) or a mixture thereof and wherein the supplementary monomer or monomers have an average solubility parameter, by weight, of 9.2 or less.

11. The article of claim 10 wherein the polyolefin is polypropylene and the adherent latex polymer is about 10% to about 60% of the blend by weight.

12. The article of claim 11 wherein the primary monomer comprises at least 50% by weight of (a), (b), (c) or a mixture thereof.

13. The article of claim 12 wherein the primary monomer is a vinyl ester of an alkanoic acid having at least eight carbon atoms.

14. The article of claim 12 wherein the primary monomer has the formula:

##STR6## wherein X is --O--, --NH-- or --NR⁵ --;

R¹ and R⁷, individually, are H, methyl or ethyl;

R² is H, --COOH, --CONH₂, or --COOR⁶ ;

R³ is H, alkyl having up to 5 carbon atoms, --CH₂ COOR⁶, --COOR⁶ or --CH₂ COOH;

R⁴ and R⁵, individually, are monocyclic alkyl having six to twenty carbon atoms, acrylic alkyl having nine to twenty carbon atoms, or alkaryl having nine to eighteen carbon atoms;

R⁶ is hydrocarbyl; and

n having a value of from zero to about ten.

15. The article of claim 14 wherein the primary monomer is decyl acrylate, decyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate or a mixture thereof.