Thermoset viscoelastomeric polymer and products thereof
View Patent ↗An inventive thermoset viscoelastomeric polymer and adhesive products thereof is provided. In some embodiments, an inventive adhesive product consists essentially of the thermoset viscoelastomeric polymer. In other embodiments, the thermoset viscoelastomeric polymer can be applied to a support member to provide an inventive adhesive product. In still other embodiments, the thermoset viscoelastomeric polymer can be applied to a conventional article to convert the article into an inventive adhesive product. The thermoset viscoelastomeric polymer and products thereof can comprise viscoelastic, adhesive, cohesive and releasability properties. In some embodiments, the thermoset viscoelastomeric polymer and products thereof can comprise cleansability and reusability properties. In further embodiments, the thermoset viscoelastomeric polymer and products thereof can comprise antimicrobial properties.
1. An adhesive and cohesive thermoset viscoelastomeric polymer derived from a thermosetting reaction media comprising:
a) about 2 wt % to about 10 wt % isocyanate prepolymer;
b) about 35 wt % to about 75 wt % polyols; and
c) about 10 wt % to about 60 wt % plasticizer;
wherein the polyols comprise about 1 wt % to about 65 wt % of the total reaction media weight straight chain diol and about 3 wt % to about 50 wt % of the total reaction media weight crosslinking polyol; and
wherein the plasticizer comprises about 10 wt % to less than 45 wt % of the total reaction media weight epoxidized triglyceride plasticizer and 0 wt % to about 40 wt % of the total reaction media weight viscosity reducing plasticizer.
2. The thermoset viscoelastomeric polymer of claim 1 , wherein the isocyanate prepolymer comprises a diisocyanate.
3. The thermoset viscoelastomeric polymer of claim 1 , wherein the straight chain diol and the crosslinking polyol each have a molecular weight of about 1,000 to about 20,000.
4. The thermoset viscoelastomeric polymer of claim 1 , wherein the crosslinking polyol comprises triol.
5. The thermoset viscoelastomeric polymer of claim 4 , wherein the diol comprises polyether diol and the triol comprises polyether triol.
6. The thermoset viscoelastomeric polymer of claim 1 , further comprising a straight chain diol to crosslinking polyol weight ratio of about 1:3 to about 3:1.
7. The thermoset viscoelastomeric polymer of claim 1 , wherein the plasticizer comprises about 10 wt % to less than about 43 wt % of the total reaction media weight epoxidized triglyceride plasticizer.
8. The thermoset viscoelastomeric polymer of claim 1 , wherein the epoxidized triglyceride plasticizer comprises an epoxidized vegetable oil.
9. The thermoset viscoelastomeric polymer of claim 1 , wherein the viscosity reducing plasticizer is an ester plasticizer.
10. The thermoset viscoelastomeric polymer of claim 9 , wherein the ester plasticizer is selected from the group consisting of sebacates, adipates, phthalates, isophthalates, maleates, azelates and glutarates.
11. The thermoset viscoelastomeric polymer of claim 1 , wherein the viscosity reducing plasticizer has a molecular weight of less than about 750.
12. The thermoset viscoelastomeric polymer of claim 1 , wherein the viscosity reducing plasticizer has a dipole moment of at least about 1.5 D.
13. The thermoset viscoelastomeric polymer of claim 1 , further comprising an epoxidized triglyceride plasticizer to viscosity reducing plasticizer weight ratio of about 6:1 to about 1:3.
14. The thermoset viscoelastomeric polymer of claim 1 , further comprising an adhesiveness of about 100 g f /cm 2 to about 2,500 g f /cm 2 .
15. The thermoset viscoelastomeric polymer of claim 1 , wherein the thermoset viscoelastomeric polymer is in the form of a standalone adhesive product.
16. The thermoset viscoelastomeric polymer of claim 1 , wherein the thermoset viscoelastomeric polymer is disposed upon a support member to form an adhesive product.
17. The thermoset viscoelastomeric polymer of claim 1 , wherein the thermoset viscoelastomeric polymer is disposed upon a conventional non-adhesive article to form an adhesive product.
18. An adhesive product comprising an adhesive and cohesive thermoset viscoelastomeric polymer and a support member, wherein the polymer is disposed upon or at least partially into the support member.
19. The adhesive product of claim 18 , wherein an item disposed upon the adhesive product is substantially prevented from movement thereupon.
20. The adhesive product of claim 18 , further comprising releasability properties such that an item adhered to the adhesive product can be removed upon application of a sufficient removal force without detachment of the polymer from the support member.
21. The adhesive product of claim 18 , further comprising cleansability and reusability properties, wherein a contaminant adhered to the adhesive product can be removed therefrom via washing with water, and wherein an adhesiveness of the adhesive product substantially returns to its original state upon fully drying.
22. The adhesive product of claim 18 , further comprising antimicrobial properties.
23. The adhesive product of claim 18 , wherein the support member is a rigid material.
24. The adhesive product of claim 18 , wherein the support member is a flexible material.
25. The adhesive product of claim 18 , wherein the support member is provided by a non-adhesive article.
26. The adhesive product of claim 18 , wherein the adhesive and cohesive thermoset viscoelastomeric polymer is prepared by a thermosetting reaction media comprising:
a) about 2 wt % to about 10 wt % isocyanate prepolymer;
b) about 35 wt % to about 75 wt % polyols; and
c) about 10 wt % to about 60 wt % plasticizer;
wherein the polyols comprise about 1 wt % to about 65 wt % of the total reaction media weight straight chain diol and about 3 wt % to about 50 wt % of the total reaction media weight crosslinking triol; and
wherein the plasticizer comprises about 10 wt % to less than about 45 wt % of the total reaction media weight epoxidized triglyceride plasticizer and 0 wt % to about 40 wt % of the total reaction media weight ester plasticizer.
27. The adhesive product of claim 26 , wherein the isocyanate prepolymer is a diisocyanate prepolymer.
28. The adhesive product of claim 26 , wherein the epoxidized triglyceride plasticizer is epoxidized soybean oil.
29. The adhesive product of claim 26 , wherein the ester plasticizer is dibutyl sebacate.