公开(公告)号：WO2003018638A1

公开(公告)日：2003-03-06

申请号：PCT/FI2002/000699

申请日：2002-08-28

Applicant: RAISIO CHEMICALS LTD ,  BRUUN, Stig-Erik ,  KETOLA, Hannu ,  LAINE, Timo

Inventor： BRUUN, Stig-Erik ,  KETOLA, Hannu ,  LAINE, Timo

IPC: C08B31/18

CPC classification number: C08B31/00 ,  C08B30/18 ,  C08B31/18 ,  C08B31/185 ,  D21H17/28 ,  D21H21/16

Abstract: The invention relates to a method for the modification of starch in such a way that it is suitable for surface sizing at high dry matter contents of > 15%, typically > 20%, even more than 25%. The modification of starch comprises at least degradation and stabilisation of the starch, whereby the degradation of starch is carried out by means of a chemical treatment, such as hypochlorite oxidation or acid treatment, to such a degree of degradation at which the viscosity of the surface size prepared from the starch, calculated to a dry matter content of 10% and to a temperature of 60°C, still is at > 10 mPas, typically > 20 mPas, most typically > 25 mPas, Brookfield RVTD II 100 rpm. The invention also relates to a starch intended for use in surface sizing at a high dry matter content and its use in surface sizing.

Abstract translation: 本发明涉及一种用于改性淀粉的方法，使其适用于高干物质含量> 15％，通常> 20％，甚至超过25％的表面施胶。 淀粉的改性至少包括淀粉的降解和稳定化，由此淀粉的降解通过诸如次氯酸盐氧化或酸处理的化学处理进行到这样的降解程度，其中表面的粘度 由淀粉制成的，以干物质含量为10％和温度为60℃的大小，仍然在> 10mPas，通常> 20mPas，最通常的> 25mPas，Brookfield RVTD II 100rpm。 本发明还涉及用于在高干物质含量的表面施胶中的淀粉及其在表面施胶中的用途。

公开(公告)号：WO03018638A9

公开(公告)日：2004-02-12

申请号：PCT/FI0200699

申请日：2002-08-28

Applicant: RAISIO CHEM LTD ,  BRUUN STIG-ERIK ,  KETOLA HANNU ,  LAINE TIMO

Inventor： BRUUN STIG-ERIK ,  KETOLA HANNU ,  LAINE TIMO

IPC: C08B30/18 ,  C08B31/00 ,  C08B31/18 ,  D21H17/28 ,  D21H21/16

CPC classification number: C08B31/00 ,  C08B30/18 ,  C08B31/18 ,  C08B31/185 ,  D21H17/28 ,  D21H21/16

Abstract: The invention relates to a method for the modification of starch in such a way that it is suitable for surface sizing at high dry matter contents of > 15%, typically > 20%, even more than 25%. The modification of starch comprises at least degradation and stabilisation of the starch, whereby the degradation of starch is carried out by means of a chemical treatment, such as hypochlorite oxidation or acid treatment, to such a degree of degradation at which the viscosity of the surface size prepared from the starch, calculated to a dry matter content of 10% and to a temperature of 60 DEG C, still is at > 10 mPas, typically > 20 mPas, most typically > 25 mPas, Brookfield RVTD II 100 rpm. The invention also relates to a starch intended for use in surface sizing at a high dry matter content and its use in surface sizing.

Abstract translation: 本发明涉及一种用于改性淀粉的方法，使其适用于高干物质含量> 15％，通常> 20％，甚至超过25％的表面施胶。 淀粉的改性至少包括淀粉的降解和稳定化，由此淀粉的降解通过诸如次氯酸盐氧化或酸处理的化学处理进行到这样的降解程度，其中表面的粘度 由淀粉制成的，以干物质含量为10％和温度为60℃的大小，仍然在> 10mPas，通常> 20mPas，最通常的> 25mPas，Brookfield RVTD II 100rpm。 本发明还涉及用于在高干物质含量的表面施胶中的淀粉及其在表面施胶中的用途。

公开(公告)号：WO2003097701A1

公开(公告)日：2003-11-27

申请号：PCT/FI2003/000388

申请日：2003-05-20

Applicant: RAISIO CHEMICALS LTD ,  KETOLA, Hannu

Inventor： KETOLA, Hannu

IPC: C08B30/12

CPC classification number: C08B31/18 ,  C08B30/12 ,  C09D103/10 ,  D21H17/28 ,  D21H17/29 ,  D21H19/56 ,  D21H21/32 ,  D21H23/56

Abstract: A method for the modification of a starch or a starch derivative for decreasing the viscosity of the same in the presence of hydrogen peroxide, a metal catalyst, especially copper sulphate and optionally an agent for increasing the pH so that the dry matter content at the beginning of the modification is at least 60 %. The invention also involves use of the modified starch in i.a. surface sizing of paper.

Abstract translation: 一种用于在过氧化氢，金属催化剂，特别是硫酸铜存在下降低其粘度的淀粉或淀粉衍生物的方法，以及任选的用于提高pH的试剂，使得开始时的干物质含量 的修改至少为60％。 本发明还涉及在其中使用改性淀粉。 表面尺寸纸张。