Cross-linked networks from multifunctional hyperbranched polymers
Hyperbranched polymers having a plurality of at least two different types of functional groups are described. Specific embodiments include hyperbranched polymers having functional groups of a first type that are substantially uniformly distributed throughout the hyperbranched polymer molecule and a second type of functional group that is substantially uniformly distributed at the terminals of the hyperbranched polymer molecule. The hyperbranched polymers having different types of functional groups are synthesized by reacting one or more monomers having functional groups that are capable of reacting during a set of polymerization conditions to form a hyperbranched polymer, wherein at least one of the monomers contains latent functional groups that are not reactive during polymerization.
1. A cross-linked polymer network, comprising:
hyperbranched polymer domains having a plurality of each of at least one type of potentially reactive functional groups, wherein at least one of the different types of potentially reactive function groups being a hydrolyzable group substantially uniformly distributed throughout the hyberbranched polymer domains; and
a cross-linker covalently bonding the hyperbranched polymer domains together.
2. The network of claim 1 , wherein at least one of the different types of potentially reactive functional groups is a hydrolyzable group bonded to a silicon atom substantially uniformly distributed throughout the hyperbranched polymer domains.
3. The network of claim 1 , wherein the hyperbranched polymer is a product of a polymerization reaction of a first monomer having two or more reactive functional groups of the first type (A) and a second monomer having two or more reactive functional groups of the second type (B), at least one of the monomers having three or more reactive functional groups and at least one of the monomers having at least one latent functional group (C) that does not react significantly during the polymerization of the hyperbranched polymer.
4. The network of claim 1 , wherein the hyperbranched polymer is a product of a polymerization reaction of a first monomer having two or more vinyl or allyl reactive functional groups (A) and a second monomer having two or more hydrosilyl reactive functional groups (B), at least one of the monomers having three or more reactive functional groups and at least one of the monomers having at least one latent functional group (C) that does not react significantly during the polymerization of the hyperbranched polymer.
5. The network of claim 1 , wherein the hyperbranched polymer is a product of a polymerization reaction of a monomer having at least one reactive functional group of the first type (A), at least two reactive functional groups of the second type (B) and at least one latent functional group (C) that does not react significantly during the polymerization of the hyperbranched polymer.
6. The network of claim 1 , wherein the hyperbranched polymer is a product of a polymerization reaction of a monomer having at least one hydrosilyl reactive functional group (A), at least two vinyl or allyl reactive functional groups (B) and at least one latent functional group (C) that does not react significantly during the polymerization of the hyperbranched polymer.
7. The network of claim 1 , wherein the hyperbranched polymer is a product of a polymerization reaction of a monomer having at least one vinyl or allyl reactive functional group (A), at least two hydrosilyl reactive functional groups (B) and at least one latent functional group (C) that does not react significantly during the polymerization of the hyperbranched polymer.
8. The network of claim 1 , wherein the hyperbranched polymer is a product of a polymerization reaction involving more than two mutually reactive monomers wherein at least one of the monomers has two or more reactive functional groups of the first type (A) and at least one of the other monomers has three or more reactive functional groups of the second type (B), at least one of the monomers having at least one latent functional group (C) that does not react significantly during the polymerization of the hyperbranched polymer.
9. The network of claim 1 , wherein the hyperbranched polymer is a product of a polymerization reaction of a first monomer having two or more reactive functional groups of the first type (A) and a second monomer having two or more reactive functional groups of the second type (B), at least one of the monomers having three or more reactive functional groups and wherein one of the monomers having at least one latent functional group (C) and the other monomer having at least one latent functional group (D) wherein these latent functional groups will react with each other under the reaction conditions that are different from the polymerization reaction conditions.
10. The network of claim 1 , wherein the hyperbranched polymer is a product of a polymerization reaction of a monomer having at least one reactive functional group of the first type (A), at least two reactive functional groups of the second type (B) and at least two latent functional groups (C and D) that do not react significantly during the polymerization of the hyperbranched polymer but will react with each other under the reaction conditions that are different from the polymerization reaction conditions.
11. The network of claim 1 , wherein the hyperbranched polymer is a product of a polymerization reaction involving more than two mutually reactive monomers wherein at least one of the monomers has two or more reactive functional groups of the first type (A) and at least one of the other monomers having three or more reactive functional groups of the second type (B), at least one of the monomers having at least two latent functional group (C and D) or at least one of the reacting monomers having one type of latent functional groups (C) while at least one of the other monomers having at least one of another reactive functional groups (D) wherein the latent functional groups (C and D) do not react significantly during the polymerization of the hyperbranched polymer but will react with each other under the reaction conditions that are different from the polymerization reaction conditions.
12. The network of claim 1 , wherein the hyperbranched polymer is a product of a polymerization reaction of a monomer having two or more hydrosol groups, and a monomer selected from the group consisting of diallyldimethylsilane, diallyldiphenylsilane, 1,3-diallyltetrakis(trimethylsiloxy)-disiloxane, 1,3-diallyltetramethyldisiloxane, divinyldimethylsilane, 1,3-divinyl-1,3-diphenyl-1,3-dimethyl-disiloxane, 1,5-divinyl-3,3-diphenyltetramethyltrisiloxane, 1,5-divinylhexamethyltrisiloxane, 1,5-divinyl-3-phenylpentamethyltrisiloxane, divinyltetrakis(trimethylsiloxy)disiloxane, divinyltetramethyldisilane, 1,3-divinyltetramethyldisiloxane, 1,4-divinyltetramethyldisilylethane, divinyltetraphenyldisiloxane, tris(vinyldimethylsiloxy)methylsilane, tris(vinyldimethylsiloxy)phenylsilane, trivinylmethylsilane, 1,3,5-trivinyl-1,1,3,5,5-pentamethyltrisiloxane, 1,3,5-trivinyl-1,3,5-trimethylcyclotrisiloxane, and divinyldimethylsilane.
13. The network of claim 1 , wherein the hyperbranched polymer is a product of a polymerization reaction of a monomer having at least two vinyl or allyl groups, and a monomer selected from the group consisting of 1,1,3,3-tetramethyldisiloxane, methyltris(dimethylsiloxy)silane, phenyltris(dimethylsiloxy)silane, methylhydrocyclosiloxanes, tetrakis(dimethylsiloxy)silane, dimethylsilane, diethylsilane, diphenylsilane, phenylmethylsilane, methylsilane, and phenylsilane.
14. The network of 1 , wherein the cross-linker is an alpha, omega-telechelic linear polymer or oligomer.
15. The network of claim 14 , wherein the alpha, omega-telechelic linear polymer or oligomer has a polysiloxane backbone.
16. The network of claim 14 , wherein the alpha, omega-telechelic linear polymer or oligomer is a polydialkylsiloxane.
17. The network of claim 1 , wherein the cross-linker is a multi-functional linear polymer with functional groups pendant to the main chain backbone.
18. The network of claim 1 , wherein the cross-linker is a multi-functional traditional branched polymer having functional groups regularly or randomly distributed in the main or in the side chains.
19. The network of claim 1 , wherein the cross-linker is a di- or multi-functional non-polymeric compound that can react with the potentially reactive functional groups of the hyperbranched polymer.
20. The network of claim 1 , wherein the cross-linker is selected from the group consisting of multi-arm star polymers, dendrimers, dendrons, dendrigrafts and hyperbranched polymers.
21. The network of claim 1 , wherein crosslinking of the hyperbranched polymer was achieved by the hydrolysis of functional groups of the hyperbranched polymer molecules.
22. A process for making a cross-linked polymer network, comprising the step of:
reacting a hyperbranched polymer having a plurality of each of at least two different types of functional groups with a cross-linker that covalently bonds the hyperbranched polymer molecules together, wherein at least one of the different types of functional groups is a hydrolyzable group bonded to a silicon atom substantially uniformly distributed throughout the hyperbranched polymer molecule and the other of the different functional groups is substantially uniformly distributed at the terminals of the hyperbranched polymer molecule.
23. The process of claim 22 , wherein at least one of the different types of functional groups is substantially uniformly distributed throughout the hyperbranched polymer molecule and at least one other of the two different functional groups is substantially uniformly distributed at the terminals of the hyperbranched polymer molecule.
24. The process of claim 22 , wherein at least one of the different types of functional groups is a hydrolyzable group substantially uniformly distributed throughout the hyperbranched polymer molecule and the other of the different functional groups is a hydrosilyl, vinyl or allyl group.
25. The process of claim 22 , wherein the hyperbranched polymer is a product of a polymerization reaction of a first monomer having two or more reactive functional groups of the first type (A) and a second monomer having two or more reactive functional groups of the second type (B), at least one of the monomers having three or more reactive functional groups and at least one of the monomers having at least one latent functional group (C) that does not react significantly during the polymerization of the hyperbranched polymer.
26. The process of claim 22 , wherein the hyperbranched polymer is a product of a polymerization reaction of a first monomer having two or more vinyl or allyl reactive functional groups (A) and a second monomer having two or more hydrosilyl reactive functional groups (B), at least one of the monomers having three or more reactive functional groups and at least one of the monomers having at least one latent functional group (C) that does not react significantly during the polymerization of the hyperbranched polymer.
27. The process of claim 22 , wherein the hyperbranched polymer is a product of a polymerization reaction of a monomer having at least one reactive functional group of the first type (A), at least two reactive functional groups of the second type (B) and at least one latent functional group (C) that does not react significantly during the polymerization of the hyperbranched polymer.
28. The process of claim 22 , wherein the hyperbranched polymer is a product of a polymerization reaction of a monomer having at least one hydrosilyl reactive functional group (A), at least two vinyl or allyl reactive functional groups (B) and at least one latent functional group (C) that does not react significantly during the polymerization of the hyperbranched polymer.
29. The process of claim 22 , wherein the hyperbranched polymer is a product of a polymerization reaction of a monomer having at least one vinyl or allyl reactive functional group (A), at least two hydrosilyl reactive functional groups (B) and at least one latent functional group (C) that does not react significantly during the polymerization of the hyperbranched polymer.
30. The process of claim 22 , wherein the hyperbranched polymer is a product of a polymerization reaction involving more than two mutually reactive monomers wherein at least one of the monomers has two or more reactive functional groups of the first type (A) and at least one of the other monomers has three or more reactive functional groups of the second type (B), at least one of the monomers having at least one latent functional group (C) that does not react significantly during the polymerization of the hyperbranched polymer.
31. The process of claim 22 , wherein the hyperbranched polymer is a product of a polymerization reaction of a first monomer having two or more reactive functional groups of the first type (A) and a second monomer having two or more reactive functional groups of the second type (B), at least one of the monomers having three or more reactive functional groups and wherein one of the monomers having at least one latent functional group (C) and the other monomer having at least one latent functional group (D) wherein these latent functional groups will react with each other under the reaction conditions that are different from the polymerization reaction conditions.
32. The process of claim 22 , wherein the hyperbranched polymer is a product of a polymerization reaction of a monomer having at least one reactive functional group of the first type (A), at least two reactive functional groups of the second type (B) and at least two latent functional groups (C and D) that do not react significantly during the polymerization of the hyperbranched polymer but will react with each other under the reaction conditions that are different from the polymerization reaction conditions.
33. The process of claim 22 , wherein the hyperbranched polymer is a product of a polymerization reaction involving more than two mutually reactive monomers wherein at least one of the monomers has two or more reactive functional groups of the first type (A) and at least one of the other monomers having three or more reactive functional groups of the second type (B), at least one of the monomers having at least two latent functional group (C and D) or at least one of the reacting monomers having one type of latent functional groups (C) while at least one of the other monomers having at least one of another reactive functional groups (D) wherein the latent functional groups (C and D) do not react significantly during the polymerization of the hyperbranched polymer but will react with each other under the reaction conditions that are different from the polymerization reaction conditions.
34. The process of claim 22 , wherein the hyperbranched polymer is a product of a polymerization reaction of a monomer having two or more hydrosilyl groups, and a monomer selected from the group consisting of diallyldimethylsilane, diallyldiphenylsilane, 1,3-diallyltetrakis(trimethylsiloxy)-disiloxane, 1,3-diallyltetramethyldisiloxane, divinyldimethylsilane, 1,3-divinyl-1,3-diphenyl-1,3-dimethyl-disiloxane, 1,5-divinyl-3,3-diphenyltetramethyltrisiloxane, 1,5-divinylhexamethyltrisiloxane, 1,5-divinyl-3-phenylpentamethyltrisiloxane, divinyltetrakis(trimethylsiloxy)disiloxane, divinyltetramethyldisilane, 1,3-divinyltetramethyldisiloxane, 1,4-divinyltetramethyldisilylethane, divinyltetraphenyldisiloxane, tris(vinyldimethylsiloxy)methylsilane, tris(vinyldimethylsiloxy)phenylsilane, trivinylmethylsilane, 1,3,5-trivinyl-1,1,3,5,5-pentamethyltrisiloxane, 1,3,5-trivinyl-1,3,5-trimethylcyclotrisiloxane, and divinyldimethylsilane.
35. The process of claim 22 , wherein the hyperbranched polymer is a product of a polymerization reaction of a monomer having at least two vinyl or allyl groups, and a monomer selected from the group consisting of 1,1,3,3-tetramethyldisiloxane, methyltris(dimethylsiloxy)silane, phenyltris(dimethylsiloxy)silane, methylhydrocyclosiloxanes, tetrakis(dimethylsiloxy)silane, dimethylsilane, diethylsilane, diphenylsilane, phenylmethylsilane, methylsilane, and phenylsilane.
36. The process of claim 22 , wherein the cross-linker is an alpha, omega-telechelic linear polymer.
37. The process of claim 36 , wherein the alpha, omega-telechelic linear polymer or oligomer has a polysiloxane backbone.
38. The process of claim 36 , wherein the alpha, omega-telechelic linear polymer or oligomer is a polydialkylsiloxane.
39. The process of claim 22 , wherein the cross-linker is a multi-functional linear polymer with functional groups pendant to the main chain backbone.
40. The process of claim 22 , wherein the cross-linker is a multi-functional traditional branched polymer having functional groups regularly or randomly distributed in the main or in the side chains.
41. The process of claim 22 , wherein the cross-linker is a di- or multi-functional non-polymeric compound that can react with the terminal functional groups at the surface of the hyperbranched polymer.
42. The process of claim 22 , wherein the cross-linker is selected from the group consisting of multi-arm star polymers, dendrimers, dendrons, dendrigrafts and hyperbranched polymers.
43. The process of claim 22 , wherein the crosslinking of the hyperbranched polymer is achieved by the hydrolysis of functional groups that were substantially uniformly distributed at the terminals of the hyperbranched polymer molecules.