Claims
- 1. A method of making a cascade polymer by reacting a terminal isocyanate on at least one of the branches of a multi-branched monomer building block which includes at least two protected hydridic sites with a terminal reactive branch of a multi-branched compound having an alkyl central group forming an amide, or urethane bond there between.
- 2. A method synthesizing a multi-tier cascade polymer by reacting at least one tier of the monomer or polymer with a t-bultyl isocyanate compound of the formula
- O.dbd.C.dbd.N--C(CH.sub.2 --R).sub.3
- with R being selected from the group consisting of:
- a) --(CH.sub.2).sub.n --CH.sub.2 --COOR',
- b) --O--(CH.sub.2).sub.n --CH.sub.2 COOR',
- c) --O--(CH.sub.2).sub.n --CH.sub.2 --CN, and
- d) --(CH.sub.2).sub.n --CH.sub.2 --O--R",
- R' being selected from the groups consisting of alkyl (C-1 to C-20), cycloalkyl (C-3 to C-10), aryl,heteroaryl, polycycloalkyl, adamantyl;
- R" being selected from the groups consisting of alkyl, cycloalkyl, aryl, ##STR8## --SO.sub.2 --R'", --SiR'".sub.3 --(CH.sub.2 ).sub.n --CH.sub.2 --CN, and --(CH.sub.2).sub.n --CH.sub.2 --COOR'"
- wherein R'" is alkyl (C-1 to C-20), cycloalkyl (C3-C-10), aryl, heteroaryl, polycycloalkyl, adamantyl, n=0-10 in all formulas.
- 3. A method as set forth in claim 2 wherein said reaction is conducted at an elevated temperature of between 50.degree. to 200.degree. C.
- 4. A method as set forth in claim 3 wherein said reaction is conducted under said conditions forming carboxylic groups of the formula; ##STR9##
Parent Case Info
This is a continuation-in-part of application Ser. No. 08/626,395 filed on Apr. 2, 1996, issued as U.S. Pat. No. 5,703,271, filed on Dec. 30, 1997.
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|
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DEX |
Non-Patent Literature Citations (3)
Entry |
Sperber and Fricano, J. Am. Chem. Soc., 71:3352 (1949). |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
626395 |
Apr 1996 |
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