US2003096911A1PendingUtilityA1

Compatibilized polymer blends formed using multifunctional agents

49
Priority: Dec 18, 1996Filed: Jan 8, 2003Published: May 22, 2003
Est. expiryDec 18, 2016(expired)· nominal 20-yr term from priority
Inventors:Anthony J. Dias
C08L 2205/08C08L 2312/00C08L 23/283C08L 21/00
49
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

The invention provides for a process of making a compatibilized blend composition produced by mixing general purpose rubbers (GPR), selected from natural rubber, polyisoprene, polybutadiene, nitrile rubber, poly(styrene-co-butadiene) and poly(acrylonitrile-co-butadiene), a copolymer of isobutylene and methyl styrene, and a multifunctional agent. The compatibilized blend composition may also be cured.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A composition produced by the process comprising mixing a general purpose rubber selected from natural rubber, polyisoprene, polybutadiene, nitrile rubber, poly(styrene-co-butadiene) and poly(acrylonitrile-co-butadiene); a copolymer comprising isobutylene and methyl styrene; and a multifunctional agent.  
     
     
         2 . The composition of  claim 1 , wherein the multifunctional agent comprises a free radical source selected from dicumyl peroxide, di-t-butyl peroxide, benzoyl peroxide, bis p-chlorobenzoyl peroxide, t-butyl cumyl peroxide, 2,2′-azo bis(isobutyronitrile); 1,1′-azo bis(cyclohexanecarlonitrile); 4,4′-azo bis(4-cyanovaleric acid); and 2,2′-azo bis(2-amidinopropane) and mixtures thereof.  
     
     
         3 . The composition of  claim 1 , wherein the copolymer is brominated poly(isobutylene-co-4-methyl styrene).  
     
     
         4 . The composition of clam  1 , wherein the process further comprises a cure system.  
     
     
         5 . The composition of  claim 4 , wherein the cure system is selected from zinc oxide, stearic acid, tetramethylthiuram disulfide, 4,4′-dithiodimorpholine, tetrabutylthiunram disulfide, benzothiazyl disulfide, hexamethylene-1,6, -bisthiosulfate disodium salt dihydrate, 2-(morpholinothio) benzothiazole, N-oxydiethylene thiocarbamyl-N-oxydiethylene sulfenamide, zinc 2-ethyl hexanoate, and MC sulfur.  
     
     
         6 . The composition of  claim 1 , wherein the general purpose rubber is mixed with the multifunctional agent before mixing with the copolymer.  
     
     
         7 . The composition of  claim 1 , wherein the process is performed in one step.  
     
     
         8 . The composition of  claim 1 , wherein the process is carried out in the absence of a solvent.  
     
     
         9 . The composition of  claim 1 , wherein the general purpose rubber is present from 30 to 70 wt % of the total weight of the composition.  
     
     
         10 . The composition of  claim 1 , wherein the copolymer is present from 30 to 70 wt % of the total weight of the composition.  
     
     
         11 . A process of making a composition comprising mixing a general purpose rubber selected from natural rubber, polyisoprene, polybutadiene, nitrile rubber, poly(styrene-co-butadiene) and poly(acrylonitrile-co-butadiene); a copolymer comprising isobutylene and methyl styrene; and a multifunctional agent.  
     
     
         12 . The process of  claim 11 , wherein the multifunctional agent comprises a free radical source selected from dicumyl peroxide, di-t-butyl peroxide, benzoyl peroxide, bis p-chlorobenzoyl peroxide, t-butyl cumyl peroxide, 2,2′-azo bis(isobutyronitrile); 1,1′-azo bis(cyclohexanecarlonitrile); 4,4′-azo bis(4-cyanovaleric acid); and 2,2′-azo bis(2-amidinopropane) and mixtures thereof.  
     
     
         13 . The process of  claim 11 , wherein the copolymer is brominated poly(isobutylene-co-4-methyl styrene).  
     
     
         14 . The process of clam  11 , wherein the process further comprises a cure system.  
     
     
         15 . The process of  claim 14 , wherein the cure system is selected from zinc oxide, stearic acid, tetramethylthiuram disulfide, 4,4′-dithiodimorpholine, tetrabutylthiunram disulfide, benzothiazyl disulfide, hexamethylene-1,6, -bisthiosulfate disodium salt dihydrate, 2-(morpholinothio) benzothiazole, N-oxydiethylene thiocarbamyl-N-oxydiethylene sulfenamide, zinc 2-ethyl hexanoate, and MC sulfur.  
     
     
         16 . The process of  claim 11 , wherein the general purpose rubber is mixed with the multifunctional agent before mixing with the copolymer.  
     
     
         17 . The process of  claim 11 , wherein the process is performed in one step.  
     
     
         18 . The process of  claim 11 , wherein the process is carried out in the absence of a solvent.  
     
     
         19 . The process of  claim 11 , wherein the general purpose rubber is present from 30 to 70 wt % of the total weight of the composition.  
     
     
         20 . The process of  claim 11 , wherein the copolymer is present from 30 to 70 wt % of the total weight of the composition.  
     
     
         21 . A compatibilized blend composition produced by the process comprising mixing a general purpose rubber selected from natural rubber, polyisoprene, polybutadiene, nitrile rubber, poly(styrene-co-butadiene) and poly(acrylonitrile-co-butadiene); a copolymer comprising isobutylene and methyl styrene; and a multifunctional agent represented by the general formula (X) n —(R) m —(Y) p , wherein m is equal to or greater than zero, n and p are greater than zero, X is selected from enophiles, free radicals and radical traps, radical traps, and nucleophiles, R is selected from alkyls, aryls, alkyl substituted aryls and polymers, and Y is a nucleophile.  
     
     
         22 . The composition of  claim 21 , wherein Y is selected from carboxylates, amines, phosphines, alkoxides, phenoxides, and thiolates.  
     
     
         23 . The composition of  claim 21 , wherein X is selected from triazolinediones, maleic anhydride, methyl maleic anhydride, phenyl maleic anhydride, sulfo maleic anhydride, carboxy maleic anhydride, and derivatives thereof.  
     
     
         24 . The composition of  claim 21 , wherein X comprises a free radical trap selected from sulphides, sulphenylchlorides, thioacids, acrylic acid, and methacrylic acid.  
     
     
         25 . The composition of  claim 21 , wherein R comprises from 1 to 100 carbon atoms.  
     
     
         26 . The composition of  claim 21 , wherein the process further comprises a cure system.  
     
     
         27 . The composition of  claim 26 , wherein the cure system is selected from zinc oxide, stearic acid, tetramethylthiuram disulfide, 4,4′-dithiodimorpholine, tetrabutylthiunram disulfide, benzothiazyl disulfide, hexamethylene-1,6, -bisthiosulfate disodium salt dihydrate, 2-(morpholinothio) benzothiazole, N-oxydiethylene thiocarbamyl-N-oxydiethylene sulfenamide, zinc 2-ethyl hexanoate, and MC sulfur.  
     
     
         28 . The composition of  claim 21 , wherein the process is performed in one step.  
     
     
         29 . The composition of  claim 21 , wherein the process is carried out in the absence of a solvent.  
     
     
         30 . The composition of  claim 21 , wherein the copolymer is brominated poly(isobutylene-co-4-methyl styrene).  
     
     
         31 . A process of making a compatibilized blend composition comprising mixing a general purpose rubber selected from natural rubber, polyisoprene, polybutadiene, nitrile rubber, poly(styrene-co-butadiene) and poly(acrylonitrile-co-butadiene); a copolymer comprising isobutylene and methyl styrene; and a multifunctional agent represented by the general formula (X) n —(R) m —(Y) p , wherein m is equal to or greater than zero, n and p are greater than zero, X is selected from enophiles, free radicals and radical traps, radical traps, and nucleophiles, R is selected from alkyls, aryls, alkyl substituted aryls and polymers, and Y is a nucleophile.  
     
     
         32 . The process of  claim 31 , wherein Y is selected from carboxylates, amines, phosphines, alkoxides, phenoxides, and thiolates.  
     
     
         33 . The process of  claim 31 , wherein X is selected from triazolinediones, maleic anhydride, methyl maleic anhydride, phenyl maleic anhydride, sulfo maleic anhydride, carboxy maleic anhydride, and derivatives thereof.  
     
     
         34 . The process of  claim 31 , wherein X comprises a free radical trap selected from sulphides, sulphenylchlorides, thioacids, acrylic acid, and methacrylic acid.  
     
     
         35 . The process of  claim 31 , wherein R comprises from 1 to 100 carbon atoms.  
     
     
         36 . The process of  claim 31 , wherein the process further comprises a cure system.  
     
     
         37 . The process of  claim 36 , wherein the cure system is selected from zinc oxide, stearic acid, tetramethylthiuram disulfide, 4,4′-dithiodimorpholine, tetrabutylthiunram disulfide, benzothiazyl disulfide, hexamethylene-1,6, -bisthiosulfate disodium salt dihydrate, 2-(morpholinothio) benzothiazole, N-oxydiethylene thiocarbamyl-N-oxydiethylene sulfenamide, zinc 2-ethyl hexanoate, and MC sulfur.  
     
     
         38 . The process of  claim 31 , wherein the process is performed in one step.  
     
     
         39 . The process of  claim 31 , wherein the process is carried out in the absence of a solvent.  
     
     
         40 . The process of  claim 31 , wherein the copolymer is brominated poly(isobutylene-co-4-methyl styrene).

Join the waitlist — get patent alerts

Track US2003096911A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.