Methods of improving adhesion of non-di-(2-ethylhexyl)phthalate polyvinyl chloride to an acrylic- or ABS-based polymer

Patent metadata

Field	Value
Publication number	US-10174175-B2
Application number	US-201615173936-A
Country	US
Kind code	B2
Filing date	Jun 6, 2016
Priority date	Jun 6, 2016
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

The present disclosure provides methods of improving adhesion of a non-di-(2-ethylhexyl)phthalate (DEHP) plasticized polyvinyl chloride (PVC) to an acrylic-based polymer or an ABS-based polymer. Such methods may comprise blending the acrylic-based polymer or ABS-based polymer with an impact modifier so that a rubber content in the acrylic-based polymer or ABS-based polymer is greater than 12% (w/w). Also provided are components of a device (e.g., a medical device) made by the disclosed methods.

First claim

The invention is claimed as follows:

1. A method of improving adhesion of a non-di-(2-ethylhexyl)phthalate (DEHP) plasticized polyvinyl chloride (PVC) to an acrylic-based polymer or an ABS-based polymer, the method comprising:
blending the acrylic-based polymer or ABS-based polymer with an impact modifier so that a rubber content in the acrylic-based polymer or ABS-based polymer is greater than 12% (w/w), wherein the impact modifier is selected from at least one of poly(butyl acrylate), poly(butyl methacrylate), methyl methacrylate-butadiene-styrene copolymer (MBS), acrylic rubber, and Elvaloy®AC.

2. The method of claim 1 , wherein the non-DEHP PVC is dioctyl terephthalate (DEHT) PVC.

3. The method of claim 1 , wherein the non-DEHP plasticized PVC includes a plasticizer comprising non-DEHP plasticizer in an amount ranging from 15% (w/w) to 46% (w/w) based on the total weight of the plasticizer.

4. The method of claim 1 , wherein the non-DEHP plasticized PVC includes a plasticizer comprising non-DEHP plasticizer in an amount ranging from 6% (w/w) to 42% (w/w), excluding epoxidized oils.

5. The method of claim 1 , wherein the acrylic-based polymer is an impact modified, acrylic-based multipolymer.

6. The method of claim 1 , wherein the ABS-based polymer is an impact modified, ABS-based multipolymer.

7. The method of claim 1 , wherein the acrylic-based polymer is an acrylic terpolymer.

8. The method of claim 7 , wherein the acrylic terpolymer is a methyl methacrylate/styrene/ethyl acrylate terpolymer.

9. The method of claim 1 , wherein the ABS-based polymer is selected from the group consisting of (1) a methacrylate polymer containing ABS, (2) a transparent grade of ABS, and (3) methyl methacrylate-acrylonitrile-butadiene-styrene (MABS).

10. The method of claim 1 , wherein the acrylic-based polymer has a poly (methyl methacrylate) content greater than 98% (w/w).

11. The method of claim 1 , wherein the acrylic-based polymer is transparent.

12. The method of claim 1 , wherein the acrylic-based polymer is blended with a poly(butyl acrylate) impact modifier.

13. The method of claim 1 , wherein the rubber content in the acrylic-based polymer or ABS-based polymer is greater than 12% (w/w) and up to 40% (w/w).

14. A method of bonding a first member comprising non-DEHP PVC to a second member comprising an acrylic-based polymer or an ABS-based polymer, the method comprising:
blending the acrylic-based polymer or the ABS-based polymer with an impact modifier so that a rubber content in the acrylic-based polymer or ABS-based polymer is greater than 12% (w/w), wherein the impact modifier is selected from the at least one of poly(butyl acrylate), poly(butyl methacrylate), methyl methacrylate-butadiene-styrene copolymer (MBS), acrylic rubber, and Elvaloy®AC;
forming the second member comprising the acrylic-based polymer or the ABS-based polymer; and
solvent bonding the first member to the second member.

15. The method of claim 14 , wherein the non-DEHP PVC and acrylic-based polymer have a bond force greater than 5.5 lbf for at least 5 years.

16. The method of claim 14 , wherein the acrylic-based polymer or the ABS-based polymer is blended with a polybutadiene-type impact modifier.

17. The method of claim 14 , wherein the acrylic-based polymer is blended with a polybutadiene-type impact modifier and/or poly(butyl acrylate) impact modifier.

18. The method of claim 14 , wherein the first member is a tube and the second member is a molded part.

19. The method of claim 14 , wherein the first member and the second member are solvent bonded using cyclohexanone or a mixture of cyclohexanone and MEK.

20. A method of bonding a first member comprising non-DEHP PVC to a second member comprising an acrylic-based polymer or an ABS-based polymer, the method comprising:
blending the acrylic-based polymer or the ABS-based polymer with an impact modifier so that a rubber content in the acrylic-based polymer or ABS-based polymer is at least 15% (w/w), wherein the impact modifier is selected from at least one of poly(butyl acrylate), poly(butyl methacrylate), methyl methacrylate-butadiene-styrene copolymer (MBS), acrylic rubber, and Elvaloy®AC;
forming the second member comprising the acrylic-based polymer or the ABS-based polymer; and
solvent bonding the first member to the second member.

21. A component of a device, the component comprising:
a first member that comprises non-DEHP PVC; and
a second member that comprises an acrylic-based polymer or an ABS-based polymer molded part, wherein the first member is solvent bonded to the second member, wherein the acrylic-based polymer or ABS-based polymer comprises an impact modifier so that a rubber content in the acrylic-based polymer or ABS-based polymer is greater than 12% (w/w), and wherein the impact modifier is selected from at least one of poly(butyl acrylate), poly(butyl methacrylate), methyl methacrylate-butadiene-styrene copolymer (MBS), acrylic rubber, and Elvaloy®AC.

Assignees

• Baxter Int
• Baxter Healthcare Sa

Inventors

• Sevinc Zehra Sibel
• Ling Michael Tung Kiung

Classifications

• C08J2433/08

  Homopolymers or copolymers of acrylic acid esters · CPC title

• B29C65/4895

  Solvent bonding, i.e. the surfaces of the parts to be joined being treated with solvents, swelling or softening agents, without adhesives · CPC title

• B32B2439/80

  Medical packaging · CPC title

• C08L2201/10

  Transparent films; Clear coatings; Transparent materials · CPC title

• C08J2333/12

  Homopolymers or copolymers of methyl methacrylate · CPC title