公开(公告)号：US3897300A

公开(公告)日：1975-07-29

申请号：US38836973

申请日：1973-08-15

Applicant: WESTVACO CORP

Inventor： KOHNE JR HARRY F ,  KURRLE FREDERICK L

IPC: C08J3/00 ,  C08J3/12 ,  D21H17/35 ,  D21H19/42 ,  D21H21/28 ,  D21H21/54 ,  D21H5/00

CPC classification number: C08J3/12 ,  C08J3/00 ,  C08J2325/04 ,  D21H17/35 ,  D21H19/42 ,  D21H21/285 ,  D21H21/54

Abstract: A novel process is disclosed for converting a polystyrene or polystyreneacrylonitrile latex emulsion into a novel product comprising a white, opaque pigment for use as a paper filler, a paper coating pigment, a paint pigment, or for any other application where optimum optical effects are desired. The process comprises the high shear mixing of a polystyrenecontaining aqueous emulsion with a swelling agent which penetrates the polymer or copolymer particle thereby causing it to swell, and then a final step for setting the particle in its swollen state. When using a partially water miscible swelling agent, the emulsion may be washed and filtered to remove the swelling agent from the particle thereby setting it in the swollen state, but for an essentially non-water miscible swelling agent, the emulsion need only be filtered and dried to set the swollen particles, and, where removal of the swelling agent is not necessary, the treated emulsion may be used without the filtering or drying steps.

Abstract translation: 公开了一种用于将聚苯乙烯或聚苯乙烯丙烯腈胶乳乳液转化为包含白色不透明颜料作为纸填充剂，纸涂颜料，涂料颜料或用于需要最佳光学效果的任何其它应用的新产品的新方法 。 该方法包括将含聚苯乙烯的水性乳液与膨胀剂进行高剪切混合，所述溶胀剂渗透聚合物或共聚物颗粒从而使其膨胀，然后是将颗粒置于其溶胀状态的最后步骤。 当使用部分水混溶性溶胀剂时，可以将乳液洗涤并过滤以从颗粒中除去溶胀剂，从而使其处于溶胀状态，但是对于基本上非水混溶性溶胀剂，乳液仅需要过滤， 干燥以设置溶胀的颗粒，并且在不需要去除溶胀剂的情况下，可以使用经处理的乳液，而无需过滤或干燥步骤。

公开(公告)号：US3597312A

公开(公告)日：1971-08-03

申请号：US3597312D

申请日：1969-05-07

Applicant: WESTVACO CORP

Inventor： KOHNE HARRY F JR ,  KURRLE FREDERICK L ,  LI FELIPE S

IPC: D01D5/06 ,  D01D5/11 ,  D01F6/20 ,  D21H13/14 ,  C08F45/02 ,  D21H5/12

CPC classification number: D21H13/14 ,  D01D5/06 ,  D01D5/11 ,  D01F6/22 ,  Y10T428/2927

Abstract: SYNTHETIC, ORGANIC FILMS, FIBROUS FILLER COMPRISING BLUSHED, FIBROUS POLYSTYRENE HAVING HIGH OPACITY AS REPRESENTED BY SCATTERING COEFFICIENTS OF AT LEAST ABOUT 0.25. THE OPAQUE, FIBROUS POLYSTYRENE IS SUITABLE FOR USE AS FILLER MATERIAL IN THE MANUFACTURE OF PAPER.

公开(公告)号：US3620806A

公开(公告)日：1971-11-16

申请号：US3620806D

申请日：1968-05-17

Applicant: WESTVACO CORP

Inventor： KOHNE HARRY F JR ,  KURRLE FREDERICK L

IPC: B05D5/02 ,  B44D1/44

CPC classification number: B05D5/02 ,  Y10T428/249963 ,  Y10T428/249965 ,  Y10T428/249978 ,  Y10T428/249979 ,  Y10T428/249981 ,  Y10T428/249996 ,  Y10T428/277

Abstract: Method of coating a substrate with polystyrene, and after drying the coated substrate, blushing part of the coating to produce either a very glossy or a mat finish on the coated surface, leaving unblushed polystyrene separating the blushed portion of the polystyrene and the substrate. Coated products, suitable for printing, are produced and comprise a substrate bearing on at least one surface a coating of polystyrene, the surface of the coating being microporous and opaque, the substrate and blushed portion of the coating being bridged by unblushed polystyrene.