| 摘要 |
1523103 Cross-linking agents for polymers HOECHST AG 14 March 1977 [25 March 1976] 10668/77 Headings C3P C3R and C3B [Also in Division C2] Cross-linking agents for polymers have the Formula III wherein R is a C1-10 alkyl or dodecyl radical and R1 is an isocyanate or group. Examples illustrate the cross-linking of (1) epoxide resins based on bis-phenol A and epichlorohydrin, (2) unplasticized melamineformaldehyde resin, (3) castor-oil alkyd resin, and (4) a hydroxyethyl methacrylate-methyl methacrylate-2-ethyl-hexyl acrylate copolymer. |
