| 摘要 |
Novel gem-bis (hydroxymethyl) alcohols of formula I CH3(CH2)m(C(CH2OH)2)n(CH2)p(C(CH2OH)2)q(CH2)r(C(CH2OH)2)5(CH2)tCH2OH (I ) [wherein m, n, p, q, r, s and t are integers the sum of which is z which has a value of from 12 to 20; n, q and s, which is y, having a value of from 1 to 3; m, p and r, which may be the same or different each has a value of from 0 to 16; and t has a value of from 3 to 19] and mixtures thereof with diols of formula IIA <CHEM> [wherein h min and k min are integers; k min is greater than or equal to 3; h min is greater than or equal to 1; and the sum of h min and k min is 0 from 12 to 20]. There is also provided a series of processes for preparing these gem alcohols and mixtures from formyl alcohols and a process for preparing these formyl alcohols from unsaturated alcohols. The compounds and mixtures of the invention are particularly useful in the preparation of polyurethanes. |
