Copolymers formed by radical polymerization

Abstract

Certain copolymers formed from alkenes and one or more activated alkenes. In particular copolymers of isobutylene and one or more activated alkenes. Activated alkenes are, for example, selected from alkyl acrylates, alkyl methacrylates, maleic anhydride, or isobutenyl succinic anhydride.

1 . A copolymer formed from isobutylene and one or more activated alkenes selected from the group consisting of an alkyl acrylate, alkyl methacrylate, maleic anhydride, and isobutenyl succinic anhydride. 
   
   
       2 . The copolymer of  claim 1  wherein the activated alkene is ethyl acrylate. 
   
   
       3 . The copolymer of  claim 1  wherein the activated alkene is propyl acrylate, either n-propyl or iso-propyl acrylate. 
   
   
       4 . The copolymer of  claim 1  wherein the activated alkene is butyl acrylate. 
   
   
       5 . The copolymer of  claim 1  wherein the activated alkene is n-butyl, iso-butyl or tert-butyl acrylate. 
   
   
       6 . The copolymer of  claim 1  wherein the activated alkene is hexyl acrylate. 
   
   
       7 . The copolymer of  claim 1  wherein the activated alkene is n-hexyl, cyclohexyl or ethylhexyl acrylate. 
   
   
       8 . The copolymer of  claim 1  wherein the activated alkene is an alkyl methacrylate. 
   
   
       9 . The copolymer of  claim 1  wherein the activated alkene is methyl methacrylate. 
   
   
       10 . The copolymer of  claim 1  wherein the activated alkene is maleic anhydride. 
   
   
       11 . The copolymer of  claim 1  wherein the activated alkene is isobutenyl succinic anhydride. 
   
   
       12 . The copolymer of  claim 1  having weight average molecular weight ranging from 1,000 to 2,000,000. 
   
   
       13 . The copolymer of  claim 1  having weight average molecular weight ranging from 1,000 to 100,000. 
   
   
       14 . The copolymer of  claim 1  having weight average molecular weight ranging from 1,000 to 50,000. 
   
   
       15 . The copolymer of  claim 1  having weight average molecular weight ranging from 1,000 to 10,000. 
   
   
       16 . The copolymer of  claim 1  wherein the molar ratio of co-monomers isobutylene to activated alkene ranges from 10:90 to 90:10. 
   
   
       17 . The copolymer of  claim 1  having an isobutylene content in the range of 50-90% by molar ratio. 
   
   
       18 . The copolymer of  claim 1  having one or two end groups wherein the end groups are selected from —C(R 1 ) 2 OH or —C(R 1 ) 2 NH 2  with each R 1  being H, CH 3 , C(R 3 ) 2 H, C(R 3 ) 2 H or C(R 3 ) 3 , where R 3  is selected from the group consisting of H, alkyl, aryl, halogen, and silyl alkyl. 
   
   
       19 . The copolymer of  claim 1  having polydispersity between 2 and 3. 
   
   
       20 . A copolymer formed from isobutylene and one or more terminal alkenes having 10 or more than 10 carbon atoms. 
   
   
       21 . The copolymer of  claim 20  wherein the terminal alkenes have 10-24 carbon atoms. 
   
   
       22 . The copolymer of  claim 20  wherein one of the terminal alkenes is dodecene or decene. 
   
   
       23 . The copolymer of  claim 20  having weight average molecular weight ranging from 1,000 to 100,000. 
   
   
       24 . The copolymer of  claim 20  having weight average molecular weight ranging from 1,000 to 10,000. 
   
   
       25 . The copolymer of  claim 20  having weight average molecular weight ranging from 1,000 to 5,000. 
   
   
       26 . The copolymer of  claim 20  wherein the molar ratio of isobutylene to terminal alkene ranges from 99:1 to 75:25. 
   
   
       27 . The copolymer of  claim 20  wherein the molar ratio of isobutylene to terminal alkene ranges from 95:5 to 85:15. 
   
   
       28 . The copolymer of  claim 20  having polydispersity between 2 and 3.