| 摘要 |
Improvements in molded articles from sinterable particulate solids, improvements in method for making such articles, and novel sacrificial binders for use in making such articles are disclosed. The sacrificial binders used in this invention comprise block polymers having the structural formula X-[B (AB) eta A] eta ' wherein "X" is a linking group, A or B, " eta " is 0 or a positive integer, " eta '" is a positive integer greater than 2, "A" is a linear or branched polymer that is glassy or crystalline at room temperature and has its softening point in the range of about 80 DEG C. to about 250 DEG C. and "B" is a polymer different from A that behaves as an elastomer at processing temperatures, a plasticizer which may be oil, wax or oil and wax, and optionally other components. |
