公开(公告)号：US5059641A

公开(公告)日：1991-10-22

申请号：US463172

申请日：1990-01-10

申请人： John E. Hayes ,  Robert G. Gastinger

发明人： John E. Hayes ,  Robert G. Gastinger

IPC分类号： C08F291/06 ,  C08F2/30 ,  C08F291/00 ,  C08G18/63 ,  C08G59/14 ,  C08G59/62 ,  C08G65/26 ,  C08G65/32 ,  C08G65/48 ,  C08G101/00

CPC分类号： C08G59/62 ,  C08F2/30 ,  C08G18/636 ,  C08G65/26

摘要： Very low viscosity polymer polyols having high styrene/acrylonitrile ratios and good stability may be achieved by the use of epoxy modified polyols as dispersants. The epoxy modified polyols useful as dispersants may be made by one of three methods: (1) adding the epoxy resin internally to the modified polyol, (2) capping or coupling a polyol not containing an epoxy resin with such a resin, and (3) providing the epoxy resin both internally to the polyol and as a cap or coupler. Epoxy modified polyols having a hydroxyl to epoxy ratio of about 8 or less, made by one of these techniques, are superior dispersants and provide polymer polyols having higher styrene contents, and improved stability and viscosity properties. In one aspect, the epoxy modified polyols contain a significant amount of high moleular weight polyol adducts; generally from about 5 to about 30 wt. % of materials having a GPC molecular weight of greater than 100,000; and at least greater than 80,000. Base polyols unmodified with an epoxy resin are used to make the polymer polyols.

公开(公告)号：US4837246A

公开(公告)日：1989-06-06

申请号：US197938

申请日：1988-05-24

申请人： Robert G. Gastinger ,  John E. Hayes

发明人： Robert G. Gastinger ,  John E. Hayes

IPC分类号： C08F283/06 ,  C08G18/63

CPC分类号： C08G18/636 ,  C08G18/632

摘要： Low viscosity polymer polyol polyols having high styrene/acrylonitrile ratios and good stability may be achieved by the use of a high molecular weight (HMW) dispersant polyol comprising less than 5 wt. % of the total polyol component of the polymer polyol. The HMW dispersant should have a molecular weight higher than about 6000. Preferably, a semi-batch reactor is used, and a relatively high concentration of the HMW dispersant is initially charged to the reactor, relative to the portion of base polyol, which has a molecular weight of less than 4000.

公开(公告)号：US4837263A

公开(公告)日：1989-06-06

申请号：US59293

申请日：1987-06-08

申请人： Robert G. Gastinger ,  John E. Hayes

发明人： Robert G. Gastinger ,  John E. Hayes

IPC分类号： C08F283/06 ,  C08G18/50 ,  C08G18/63

CPC分类号： C08G18/638 ,  C08F283/06

摘要： Polymer dispersion polyols made by the free radical polymerization of a monomer mixture of at least a maleimide monomer and a copolymerizable styrenic monomer in an organic polyl medium are disclosed. The resulting polymer polyols are suitable for use to prepare flame retardant polyurethanes.

公开(公告)号：US4837247A

公开(公告)日：1989-06-06

申请号：US197933

申请日：1988-05-24

申请人： Robert G. Gastinger ,  John E. Hayes

发明人： Robert G. Gastinger ,  John E. Hayes

IPC分类号： C08G18/63

CPC分类号： C08G18/636 ,  C08G18/632

摘要： Low viscosity polymer polyols having high styrene/acrylonitrile ratios and good stability may be achieved by the use of a base polyol having a molecular weight higher than 4000, for example, from 4000 to 6500 and a high molecular weight (HMW) dispersant. The dispersant polyol may range from 1 to 20 wt. %, but may be less than 5 wt. % of the total polyol component of the polymer polyol. The HMW dispersant should have a molecular weight higher than about 6000. Preferably, a semi-batch reactor is used, and a relatively high concentration of the HMW dispersant is initially charged to the reactor, relative to the portion of base polyol. Monomer ratios of styrene to acrylonitrile of 85/15 may be achieved with this method.

公开(公告)号：US5070141A

公开(公告)日：1991-12-03

申请号：US226329

申请日：1988-07-29

申请人： Robert G. Gastinger ,  John E. Hayes

发明人： Robert G. Gastinger ,  John E. Hayes

IPC分类号： C08F283/06 ,  C08G18/63

CPC分类号： C08G18/636 ,  C08G18/638

摘要： Polyacrylate graft-polyols are found to be homogeneous liquids useful as dispersants in vinyl polymer polyols. The novel polyacrylate graft-polyols are made by polymerizing at least one acrylate monomer in a polyol where the resultant polyacrylate is soluble in the polyol used. The polyol may be a polyoxyalkylene polyether polyol. No copolymer or unsaturated polyol is required to make vinyl polymer polyols having high styrene/acrylonitrile ratios, good stability and improved viscosity properties when these polyacrylate graft-polyol dispersants are employed. The vinyl polymer polyols are in turn useful in reactions with polyisocyanates in the presence of suitable catalysts to make polyurethane products.

公开(公告)号：US4721733A

公开(公告)日：1988-01-26

申请号：US23499

申请日：1987-03-09

申请人： Robert G. Gastinger ,  John E. Hayes

发明人： Robert G. Gastinger ,  John E. Hayes

IPC分类号： C08G18/65 ,  C08G18/63 ,  C08G18/14

CPC分类号： C08G18/638 ,  C08G2105/02

摘要： Stable, fluid polymer polyols made by the free radical polymerization of a monomer mixture of an .alpha.,.beta.-ethylenically unsaturated dicarboxylic acid anhydride and a copolymerizable monomer in an organic polyol medium of secondary hydroxyl terminated polyol are disclosed. In one embodiment, the polymer polyols form stable, acrylonitrile-free dispersions.

公开(公告)号：US5359019A

公开(公告)日：1994-10-25

申请号：US525269

申请日：1990-05-17

申请人： John E. Hayes ,  Robert G. Gastinger

发明人： John E. Hayes ,  Robert G. Gastinger

IPC分类号： C08F2/08 ,  C08F2/24 ,  C08F12/00 ,  C08F12/08 ,  C08F20/10 ,  C08F20/28 ,  C08F22/36 ,  C08F22/40 ,  C08F283/06 ,  C08G18/63 ,  C08G65/26 ,  C08F222/40 ,  C08F212/08 ,  C08F220/10 ,  C08F236/06 ,  C08K5/06

CPC分类号： C08F283/06 ,  C08G18/636 ,  C08G18/638 ,  C08G2101/00

摘要： Monomers having at least two reactive ethylenically unsaturated sites may be polymerized via a free-radical reaction in the presence of a polyol to produce a dispersant useful in preparing polymer polyols that find uses as coreactants to produce polyurethane foams. The monomers include, but are not limited to, polyethylenically unsaturated maleimides and acrylates. The dispersants prepared in this manner can be used in very small quantities, about 2 to 5 wt. % of the total polyol and still produce a styrene/acrylonitrile polymer polyol with high solids and high styrene levels.

摘要翻译： 具有至少两个反应性烯属不饱和位点的单体可以在多元醇存在下通过自由基反应进行聚合，以产生用于制备用作共聚反应产生聚氨酯泡沫的聚合物多元醇的分散剂。 单体包括但不限于多烯属不饱和马来酰亚胺和丙烯酸酯。 以这种方式制备的分散剂可以以非常少的量使用，约2至5wt。 ％的总多元醇，并仍然生产具有高固体含量和高苯乙烯含量的苯乙烯/丙烯腈聚合物多元醇。

公开(公告)号：US5225481A

公开(公告)日：1993-07-06

申请号：US664011

申请日：1991-03-04

申请人： Robert G. Gastinger ,  John E. Hayes

发明人： Robert G. Gastinger ,  John E. Hayes

IPC分类号： C08G18/63

CPC分类号： C08G18/636 ,  C08G18/638

摘要： A stable, low viscosity polymer polyol composition comprising a continuous phase, a disperse phase within the continuous phase, and a dispersant for enhancing the stability of the resultant polymer polyol is disclosed. In one embodiment, the dispersant is formed by polymerizing at least one acrylate monomer in a polyether polyol to form a single phase homogeneous liquid intermediate reaction product which is transesterified to form a polyol polyacrylate dispersant.

摘要翻译： 公开了一种稳定的低粘度聚合物多元醇组合物，其包含连续相，连续相内的分散相和用于提高所得聚合物多元醇的稳定性的分散剂。 在一个实施方案中，通过在聚醚多元醇中聚合至少一种丙烯酸酯单体以形成单相均匀液体中间体反应产物形成分散剂，所述单相均匀液体中间体反应产物被酯交换以形成多元醇聚丙烯酸酯分散剂。

公开(公告)号：US4855330A

公开(公告)日：1989-08-08

申请号：US197868

申请日：1988-05-24

申请人： Robert G. Gastinger ,  John E. Hayes

发明人： Robert G. Gastinger ,  John E. Hayes

IPC分类号： C08F2/44 ,  C08F212/10 ,  C08F283/10 ,  C08G18/62 ,  C08G18/63

CPC分类号： C08G18/63 ,  C08G2101/00

摘要： Low viscosity polymer polyols having high styrene/acrylonitrile ratios and good stability may be achieved by the use of epoxy resin-modified polyols as the base polyols. The styrene/acrylo-nitrile ratio may be as high as 95/5 and even 100/0 in the polymer polyols. The epoxy resin-modified polyols useful as base polyols may be made by reacting a polyol initiator having an active hydrogen functionality of 3 to 8 and one or more alkylene oxides with an epoxy resin. It is preferred that only a small part of the epoxy resin-modified base polyol be initially charged to the reactor, and that the balance, a relatively larger part, be a part of the monomer feed stream to the reactor.

公开(公告)号：US5358984A

公开(公告)日：1994-10-25

申请号：US66607

申请日：1993-05-24

申请人： John E. Hayes ,  Robert G. Gastinger

发明人： John E. Hayes ,  Robert G. Gastinger

IPC分类号： C08F2/44 ,  B01F17/00 ,  B01F17/52 ,  C08F8/14 ,  C08F283/06 ,  C08G18/48 ,  C08G18/63 ,  C08G81/02 ,  C08L51/08 ,  C08L71/02 ,  C08J7/14 ,  C08K5/15

CPC分类号： C08G18/632 ,  B01F17/0028 ,  C08F283/06 ,  C08G18/636 ,  C08G81/025 ,  C08G2101/0008 ,  C08G2101/0083

摘要： Dispersants that are the reaction product of polyoxyalkylene polyether polyols with polymers containing anhydride groups are discussed. These dispersants may be used in the production of polymer polyols having high styrene contents and high solids contents. The polymers containing the anhydride groups may be preformed polymers which are then reacted with the polyol, or may be formed in the polyol directly prior to esterification with the polyol to form the dispersants. Maleic anhydride and methacrylic arthydride and derivatives thereof are examples of monomers suitable for the dispersants. Polymer polyols made using these dispersants may be reacted with polyisocyanates to produce polyurethanes.

摘要翻译： 讨论了聚氧亚烷基聚醚多元醇与含有酸酐基团的聚合物的反应产物的分散剂。 这些分散剂可用于生产具有高苯乙烯含量和高固体含量的聚合物多元醇。 含有酸酐基团的聚合物可以是与多元醇反应的预成型聚合物，或者可以直接在多元醇酯化之前在多元醇中形成以形成分散剂。 马来酸酐和甲基丙烯酸Arthydride及其衍生物是适用于分散剂的单体的实例。 使用这些分散剂制备的聚合物多元醇可以与多异氰酸酯反应生成聚氨酯。