发明名称 |
POLYMER/POLYOL-KOMPOSITION BESTAENDE AV POLYOXIALKYLEN/POLYOXIETYLEN-POLYOL OCH EN POLYMER I FORM AV PARTIKLAR SOM AER STABILT DISPERGERADE I POLYOLEN SAMT POLYOXIALKYLEN/POLYOXIETYLEN-POLYOL FOER DESS FRAMSTAELLNING |
摘要 |
1512710 Polyoxyalkylene polyols; polyurethane foam UNION CARBIDE CORP 12 Nov 1975 [13 Nov 1974] 46762/75 Headings C3R and C3P A normally liquid polyol consists essentially of: (I) polyoxyalkylene blocks comprising polyoxyalkylene groups containing at least 3 carbon atoms; (II) blocks of polyoxyethylene units at least 35% of which end-block units I and are terminated with primary OH groups and (III) the residue of a starter containing active hydrogen atoms. The polyol contains 90-97% by wt. of units I, e.g. polyoxypropylene blocks, and 10-3% by wt. of blocks of units II. It has an average of at least 3À2 OH groups per molecule, a hydroxyl number #45. At least 35 % of the OH groups present are primary. Another embodiment of the invention comprises a polymer/polyol mixture obtained by polymerizing a minor amount of at least one ethylenically unsaturated monomer in the presence of a polyol as defined above. A typical monomer mixture comprises 40-85% by wt. of acrylonitrile and 60-15% by wt. of styrene. The resultant mixture may comprise 3-35% by wt. of polymer and 97-65% by wt. of polyol. Elastomeric polyurethane may be obtained by reacting a polyol or polyol/ polymer mixture as defined above with an organic polyisocyanate in the presence of a catalyst for the polyurethane forming reaction. Foam, suitable for upholstery, may be prepared by conducting the reaction in the presence of a blowing agent and a silicone surfactant. |
申请公布号 |
SE423399(B) |
申请公布日期 |
1982.08.12 |
申请号 |
SE19750012720 |
申请日期 |
1975.11.12 |
申请人 |
UNION CARBIDE CORPORATION |
发明人 |
C G SEEFRIED JR.;R D WHITMAN;R VAN CLEVE |
分类号 |
C08F2/00;C08F2/44;C08F283/00;C08F283/06;C08G18/00;C08G18/48;C08G18/63;C08G65/00;C08G65/26;C08G65/28;C08G65/32;C08L1/00;C08L7/00;C08L21/00;C08L23/00;C08L27/00;C08L33/00;C08L33/02;C08L51/00;C08L51/02;C08L71/00;C08L71/02;C08L77/00;C08L101/00;(IPC1-7):08L71/02 |
主分类号 |
C08F2/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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