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Class Information
Number: 528/239
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > From aldehyde or derivative thereof as reactant > Polymerizing in the presence of a specified material other than a reactant > Material contains a metal atom > Material contains a group ia metal atom (li, na, k, rb, cs, fr)
Description: Subject matter wherein the specified material contains at least one atom of a Group IA metal (i.e., Li, Na, K, Rb, Cs, Fr).
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7169191 |
Process for preparing a synthetic aluminium tanning agent |
Jan. 30, 2007 |
| 7118603 |
Process for the preparation of a formaldehyde-free synthetic tanning agent |
Oct. 10, 2006 |
| 6646094 |
Low emission formaldehyde resin and binder for mineral fiber insulation |
Nov. 11, 2003 |
| 6384179 |
Polyacetal resin composition |
May. 7, 2002 |
| 5977290 |
Basic catalysts for the aldol reaction |
Nov. 2, 1999 |
| 5958398 |
Biodegradable polyacetal polymers and methods for their formation and use |
Sep. 28, 1999 |
| 5929195 |
Process for producing branched or crosslinked polyacetal resin |
Jul. 27, 1999 |
| 5844059 |
Process for preparing polyacetal copolymer |
Dec. 1, 1998 |
| 5811510 |
Biodegradable polyacetal polymers and methods for their formation and use |
Sep. 22, 1998 |
| 5795934 |
Method for preparing a urea-extended phenolic resole resin stabilized with an alkanolamine |
Aug. 18, 1998 |
| 5674971 |
Urea-formaldehyde resin composition and method of preparation thereof |
Oct. 7, 1997 |
| 5608030 |
Process for the preparation of polyacetals |
Mar. 4, 1997 |
| 5567743 |
Reclamation of ester-cured phenolic resin bonded foundry sands |
Oct. 22, 1996 |
| 5457155 |
Controlled functional density poly (secondary amines) |
Oct. 10, 1995 |
| 5457147 |
Controlled functional density poly (secondary amines) and method for preparation thereof |
Oct. 10, 1995 |
| 5371140 |
Emulsifiable phenolic resole resin |
Dec. 6, 1994 |
| 5288840 |
Polyoxymethylene copolymer and process for producing the copolymer |
Feb. 22, 1994 |
| 5248762 |
Process for preparing cyclic polyoxymethylene |
Sep. 28, 1993 |
| 5120821 |
Process for producing melamine formaldehyde resins using impure melamine |
Jun. 9, 1992 |
| 5115083 |
Curable aminoplast compositions and catalysts for curing same |
May. 19, 1992 |
| 5071945 |
Process for the production of sulphonic acid group-containing condensation products with a low content of free formaldehyde |
Dec. 10, 1991 |
| 5047466 |
Amino resin solutions having low electrical conductivity |
Sep. 10, 1991 |
| 5043412 |
Ambient temperature curing, high carbon contributing compositions |
Aug. 27, 1991 |
| 5025085 |
Curable aminoplast compositions and catalysts for curing same |
Jun. 18, 1991 |
| 5010164 |
Process for forming urea-formaldehyde resin and use |
Apr. 23, 1991 |
| 5008365 |
Process for the manufacture of urea-formaldehyde resins containing melamine |
Apr. 16, 1991 |
| 4968773 |
Process for the preparation of urea-formaldehyde resins |
Nov. 6, 1990 |
| 4968772 |
Process for the preparation of urea-formaldehyde resins |
Nov. 6, 1990 |
| 4906727 |
Urea-aldehyde polycondensates, preparation thereof and use thereof as surface coating binders |
Mar. 6, 1990 |
| 4888412 |
Tanning assistant |
Dec. 19, 1989 |
| 4839407 |
Particulate polyacetal carboxylate and methods for preparation thereof |
Jun. 13, 1989 |
| 4816553 |
Polyacetals, preparation thereof from dialdehydes and polyolcarboxylic acids, and use of same |
Mar. 28, 1989 |
| 4780526 |
Composition, method for preparing and use thereof |
Oct. 25, 1988 |
| 4764585 |
Cationic polycondensates useful for improving the fastness of dyeings on textiles |
Aug. 16, 1988 |
| 4489027 |
Process for preparing solvent resistant, thermoplastic aromatic poly(imidesulfone) |
Dec. 18, 1984 |
| 4451640 |
Process for producing aromatic sulfide polymer |
May. 29, 1984 |
| 4430469 |
Process for preparing highly concentrated aqueous solutions of low viscosity of melamine/aldehyde resins |
Feb. 7, 1984 |
| 4405771 |
Organometallic polymers, their preparation and compositions containing them |
Sep. 20, 1983 |
| 4403993 |
Preparation of water-soluble or self-dispersing resin tanning agents |
Sep. 13, 1983 |
| 4399272 |
Process for producing polyacetal copolymers |
Aug. 16, 1983 |
| 4398034 |
Process for the preparation of low molecular weight polyesters from hydroxypivaldehyde |
Aug. 9, 1983 |
| 4303777 |
Acetal carboxylic acid polymers |
Dec. 1, 1981 |
| 4302564 |
Selectively controlling the hydrolytic stability of acetal carboxylate polymers |
Nov. 24, 1981 |
| 4267277 |
Method of producing urea-formaldehyde resin and foam having reduced formaldehyde emission |
May. 12, 1981 |
| 4243797 |
Process for the manufacture of soft and hard resins of urea, formaldehyde and a CH-acidic aldehyde, and their use |
Jan. 6, 1981 |
| 4224429 |
Process for the anionic polymerization in the presence of cryptants |
Sep. 23, 1980 |
| 4204052 |
Copolymers of acetal carboxylates |
May. 20, 1980 |
| 4201858 |
Method of preparing polyacetal carboxylates |
May. 6, 1980 |
| 4143016 |
Preparation of melamine derivatives |
Mar. 6, 1979 |
| 4140676 |
Process for preparing polymeric acetal carboxylate salts |
Feb. 20, 1979 |
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