US2004054112A1PendingUtilityA1

Silicone modified polyurea

46
Assignee: REACTAMINE TECHNOLOGY LLCPriority: Sep 9, 2002Filed: Aug 27, 2003Published: Mar 18, 2004
Est. expirySep 9, 2022(expired)· nominal 20-yr term from priority
Inventors:Stuart B. Smith
C08G 18/61C08G 59/3254C08G 18/798Y10T428/31663C09D 175/02C08G 2150/50C08G 18/10
46
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

The present invention includes a novel polyol prepolmer including an aliphatic amine, aromatic amine, or a mixture of both aliphatic and aromatic amines with an epoxy functional silicone to produce the novel polyol prepolymer chain extender. In another aspect of the invention, the novel polyol prepolymer chain extender is reacted with a polyisocyanate to produce a novel silicone modified polyurea having improved adhesion, chemical resistance, UV stability, and decreased shrinkage properties.

Claims

exact text as granted — not AI-modified
What is claimed:  
     
         1 . A polyol prepolymer chain extender for a silicone modified polyurea comprising: 
 at least one amine; and    at least one epoxy functional silicone.    
     
     
         2 . The polyol prepolymer chain extender of  claim 1  wherein said at least one amine is selected from the group consisting of primary aliphatic amines, primary cyclo-aliphatic, secondary aliphatic amines, primary aromatic amines, and secondary aromatic amines, and mixtures thereof.  
     
     
         3 . The polyol prepolymer chain extender of  claim 1  wherein said epoxy functional silicone is a silicone modified epoxy resin that has the general formula:  
       
         
           
           
               
               
           
         
       
     
     
         4 . The polyol prepolymer chain extender of  claim 1  wherein said at least one amine is present in the range of from about 50 to about 900 parts by weight, based on the total polyol prepolymer chain extender.  
     
     
         5 . The polyol prepolymer chain extender of  claim 1  wherein said at least one epoxy functional silicone is present in the range of from about 50 to about 200 parts by weight, based on the total polyol prepolymer chain extender.  
     
     
         6 . The polyol prepolymer chain extender of  claim 1  wherein said at least one amine is a combination of from about 150 to about 450 parts by weight of a polyoxypropylenediamine that has a formula:  
       
         
           
           
               
               
           
         
       
       and from about 250 to about 750 parts by weight of a diethyltoluenediamine (DETDA), wherein x equals 5.6.  
     
     
         7 . The polyol prepolymer chain extender of  claim 1  wherein said at least one amine is a combination of from about 150 to about 450 parts by weight of a polyoxypropylenediamine that has a formula:  
       
         
           
           
               
               
           
         
       
       and from about 250 to about 750 parts by weight of a dimethylthiotoluene diamine (DMTDA), wherein x equals 5.6.  
     
     
         8 . The polyol prepolymer chain extender of  claim 1  wherein said at least one amine is a combination of from about 150 to about 450 parts by weight of a polyoxypropylenediamine that has a formula:  
       
         
           
           
               
               
           
         
       
       and from about 200 to about 600 parts by weight of a polyaspartic ester, wherein x equals 5.6.  
     
     
         9 . The polyol prepolymer chain extender as in one of claims  6 - 8 , in which said epoxy functional silicone is from about 50 to about 150 parts by weight of silicone modified epoxy resin.  
     
     
         10 . A silicone modified polyurea comprising: 
 a B-component which includes at least one polyol prepolymer chain extender which comprises: 
 at least one amine;  
 at least one epoxy functional silicone; and  
   an A-component which comprises at least one polyisocyanate.    
     
     
         11 . The silicone modified polyurea of  claim 10  wherein said at least one amine is selected from the group consisting of primary aliphatic amines, primary cyclo-aliphatic, secondary aliphatic amines, primary aromatic amines, and secondary aromatic amines, or a combination of said amines.  
     
     
         12 . The polyol prepolymer chain extender of  claim 1  wherein said epoxy functional silicone is a silicone modified epoxy resin that has the general formula:  
       
         
           
           
               
               
           
         
       
     
     
         13 . The silicone modified polyurea of  claim 10  wherein said polyisocyanate is selected from the group consisting of 
 aliphatic isocyanates selected from the group consisting of hexamethylene diisocyanate (HMDI); a bifunctional monomer of tetraalkyl xylene diisocyanate; cyclohexane diisocyanate; 1,12-dodecane diisocyanate; 1,4-tetramethylene diisocyanate; isophorone diisocyanate (IPDI); and dicyclohexylmethane diisocyanate;  
 aromatic isocyanates selected from the group consisting of m-phenylene diisocyanate; p-phenylene diisocyanate; polymethylene polyphenylene diisocyanate; 2,4-toluene diisocyanate; 2,6-toluene diisocyanate; dianisidine diisocyanate; bitolylene diisocyanate; naphthalene-1,4-diisocyanate; and diphenylene 4,4′-diisocyanate; and  
 aliphatic/aromatic diisocyanates, selected from the group consisting of xylylene-1,3-diisocyanate; bis(4-isocyanatophenyl)methane; bis(3-methyl-4-isocyanatophenyl)methane; and 4,4′-diphenylpropane diisocyanate; tetamethyl xylene diisocyanate (TMXDI); and mixtures thereof.  
 
     
     
         14 . The silicone modified polyurea of  claim 10  wherein said B-component further comprises UV stabilizers.  
     
     
         15 . The silicone modified polyurea of  claim 10  wherein said B-component further comprises color pigments.  
     
     
         16 . The silicone modified polyurea of  claim 10  wherein said B-component further comprises silane coupling agents.  
     
     
         17 . The silicone modified polyurea of  claim 10  wherein said B-component further comprises fire retardants.  
     
     
         18 . A method of making a polyol prepolymer chain extender for a silicone modified polyurea comprising: 
 combining an adduct of at least one amine selected from the group consisting of primary aliphatic amines, primary cyclo-aliphatic, secondary aliphatic amines, primary aromatic amines, and secondary aromatic amines, and mixtures thereof, with at least one epoxy functional silicone to form a solution; and    reacting said solution to form a polyol prepolymer chain extender, wherein said reacting comprises heating said solution at a temperature in the range of from 130° F. to 210° F. for a time period of from 1 hour to 24 hours.    
     
     
         19 . The method of  claim 18  wherein said epoxy functional silicone is a silicone modified epoxy resin.  
     
     
         20 . A method of making a silicone modified polyurea comprising: 
 combining an adduct of at least one amine selected from the group consisting of primary aliphatic amines, primary cyclo-aliphatic, secondary aliphatic amines, primary aromatic amines, and secondary aromatic amines, and mixtures thereof, with at least one epoxy functional silicone to form a solution;    reacting said solution to form a polyol prepolymer chain extender, wherein said reacting comprises heating said solution at a temperature in the range of from 130° F. to 210° F. for a time period of from 1 hour to 24 hours; and    mixing said polyol prepolymer chain extender with at least one polyisocyanate to form a silicone modified polyurea.    
     
     
         21 . The method of  claim 20  wherein said mixing is performed by a pressurizable spray apparatus.  
     
     
         22 . A method of applying a silicone modified polyurea to a substrate, comprising: 
 combining an adduct of at least one amine selected from the group consisting of primary aliphatic amines, primary cyclo-aliphatic, secondary aliphatic amines, primary aromatic amines, and secondary aromatic amines, and mixtures thereof, with at least one epoxy functional silicone to form a solution;    reacting said solution to form a polyol prepolymer chain extender, wherein said reacting comprises heating said solution at a temperature in the range of from 130° F. to 210° F. for a time period sufficient to substantially react all of said polyol prepolymer chain extender;    cooling said polyol prepolymer chain extender; and    applying said polyol prepolymer chain extender and said at least one polyisocyanate simultaneous to said substrate to form a silicone modified polyurea on said substrate.    
     
     
         23 . The method of  claim 22  wherein said heating is in a temperature range of from 130° F. to 210° F.  
     
     
         24 . The method of  claim 22  wherein said substrate is prepared prior to application of said silicone modified polyurea.

Join the waitlist — get patent alerts

Track US2004054112A1 — get alerts on status changes and closely related new filings.

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