| 摘要 |
A cross-linked product insoluble in boiling tetrachloroethylene is prepared by heating to at least 150 DEG C. in an oxygen-containing atmosphere a copolymer of ethylene and a compound of the formula CH2=CR1-COO-(CH2)n-CH2 -CH2-NR2R3 wherein R1 is H or methyl, R2 and R3 are each C1-C12 alkyl, and n is from 0 to 10. Cross-linking may be effected in situ with the copolymer coated, impregnated or laminated on a substrate.ALSO:Substrates are provided with water and solvent resistant coatings by applying thereto, from a solution in a volatile organic solvent, a coating of a copolymer of ethylene and a dialkylaminoalkyl acrylate or methacrylate, removing said solvent by heating to a temperature below 150 DEG C, and then cross-linking the coating by heating the treated substrate to at least 150 DEG C in an oxygen-containing atmosphere. Coating is effected by conventional methods and the solvent may be, for example, tetrahydrofuran. Substrates specified are textiles, paper, wood, metals, glass and concrete in the form of, for example, sheets, tubes, rods or filaments.ALSO:Fabric is impregnated with a solution in tetrahydrofuran of a copolymer of ethylene and a dialkylaminoalkyl acrylate or methacrylate, removing said solvent by heating to a temperature below 150 DEG C, and then cross-linking the impregnated copolymer by heating the fabric to at least 150 DEG C in an oxygen-containing atmosphere. The fabric may be woven or non-woven and derived from a material such as cotton, wool, polyamide, polyester or rayon. |
