公开(公告)号：ZA969146B

公开(公告)日：1997-05-27

申请号：ZA969146

申请日：1996-10-30

Applicant: HENKEL CORP

Inventor： CORMIER GERALD J ,  SIENKOWSKI MICHAEL L ,  PETSCHEL MICHAEL ,  KUHM PETER

IPC: C23C22/17 ,  C23C22/36 ,  C23C

Abstract: A combination of difunctional organic acid, preferably a hydroxy acid such as citric acid, or salt thereof with acrylic acid/acrylate polymers in zinc phosphate conversion coating forming liquid compositions, preferably also containing hydroxylamine, results in crystal size refinement in the coating formed and/or faster formation of a sufficiently thick conversion coating to protect against subsequent rusting of a ferrous substrate.

公开(公告)号：PL309404A1

公开(公告)日：1995-10-02

申请号：PL30940493

申请日：1993-12-15

Applicant: HENKEL CORP

Inventor： MILLER ROBERT W ,  PETSCHEL MICHAEL

IPC: C23C22/12 ,  C23C22/13 ,  C23C22/18 ,  C23C22/36

公开(公告)号：CA2177844A1

公开(公告)日：1995-06-22

申请号：CA2177844

申请日：1994-12-08

Applicant: HENKEL CORP

Inventor： MILLER ROBERT W ,  PETSCHEL MICHAEL

IPC: C23C22/13 ,  C23C22/18 ,  C23C22/36 ,  C23C22/12

Abstract: The following water soluble materials are all satisfactory internal accelerators for otherwise conventional zinc phosphate conversion coating solutions: reducing sugars, starch, urea, and poly(acrylates and methacrylates). Concentrates including these ingredients and otherwise conventional constituents of zinc phosphate conversion coating compositions, except for excluding conventional accelerators other than nitrate, are stable in composition during storage, unlike most conversion coating compositions, containing conventional accelerators. Thus concentrates according to the invention are practical single-package concentrates that can be made into working phosphating compositions by dilution with water only.