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Class Information
Number: 528/241
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 boron atom > Boron trihalide or organic complex thereof
Description: Subject matter wherein the specified material contains one boron atom which is bonded to three halogen atoms or is an organic complex wherein at least one boron atom therein is bonded to three halogen atoms.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| RE39182 |
Process for the preparation of thermally stable polyoxymethylene copolymers |
Jul. 11, 2006 |
| 6670444 |
Processes for synthesizing borohydride compounds |
Dec. 30, 2003 |
| 6506850 |
Polyoxymethylene copolymer and composition thereof |
Jan. 14, 2003 |
| 6433128 |
Process for producing oxymethylene copolymer |
Aug. 13, 2002 |
| 6365704 |
Polyacetal copolymer |
Apr. 2, 2002 |
| 6072021 |
Copolymerization of formaldehyde and cyclic ethers using initiators based upon tetraphenyl borates |
Jun. 6, 2000 |
| 6037439 |
Process for continuous production of polyacetal resin |
Mar. 14, 2000 |
| 5994455 |
Process for the preparation of thermally stable polyoxymethylene copolymers |
Nov. 30, 1999 |
| 5942595 |
Process for co-polymerization of formaldehyde with cyclic ethers in the presence of organic nitro compounds |
Aug. 24, 1999 |
| 5929195 |
Process for producing branched or crosslinked polyacetal resin |
Jul. 27, 1999 |
| 5837781 |
Thermally stable polyoxymethylene copolymer |
Nov. 17, 1998 |
| 5728798 |
Process for preparing polyacetal copolymer |
Mar. 17, 1998 |
| 5688897 |
Method for producing a stabilized oxymethylene copolymer |
Nov. 18, 1997 |
| 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 |
| 5344911 |
Process for producing polyoxymethylene copolymer having reduced amount of unstable terminal groups |
Sep. 6, 1994 |
| 5248762 |
Process for preparing cyclic polyoxymethylene |
Sep. 28, 1993 |
| 5098787 |
Modified oriented polyacetal product |
Mar. 24, 1992 |
| 5070161 |
Heat-latent, cationic polymerization initiator and resin compositions containing same |
Dec. 3, 1991 |
| 5055547 |
Liquid-crystal copolyethers based on 7-oxa-bicyclo(2,2,1)heptane |
Oct. 8, 1991 |
| 5004798 |
Novel polyacetal copolymers of trioxane and trimethylolpropane formal derivatives |
Apr. 2, 1991 |
| 4983708 |
Novel polyacetal copolymers of trioxane and glycidyl ester derivatives |
Jan. 8, 1991 |
| 4977021 |
Methods for forming magnetic coatings using trioxane recording media having such coatings |
Dec. 11, 1990 |
| 4975518 |
Novel polyacetal copolymers of trioxane and 1,2,6-hexanetriol formal derivatives |
Dec. 4, 1990 |
| 4975519 |
Novel polyacetal terpolymers of trioxane and alpha, alpha- and alpha, beta-isomers of glycerol formal and functional derivatives thereof |
Dec. 4, 1990 |
| 4975520 |
Production of acetal copolymers from gaseous formaldehyde and cyclic ethers |
Dec. 4, 1990 |
| 4956445 |
Process for the preparation of acetal polymer or copolymer |
Sep. 11, 1990 |
| 4937312 |
Process for producing elastomeric acetal polymers |
Jun. 26, 1990 |
| H784 |
Copolyformals of 1,2-bis(2-hydroxyethyl)-1,2-dicarbadodecaborane(12) and polyfluoroalkyl diols |
Jun. 5, 1990 |
| 4847332 |
Terminally unsaturated macromolecular monomers of polyformals and copolymers thereof |
Jul. 11, 1989 |
| 4746723 |
Process for the production of a polyphenylene ether protected from molecular weight degradation |
May. 24, 1988 |
| 4692505 |
Process for preparing oxymethylene polymers using boron trifluoride in admixture with an inert gas |
Sep. 8, 1987 |
| 4691000 |
Oxymethylene copolymers and process for their preparation |
Sep. 1, 1987 |
| 4681927 |
Process for producing oxymethylene copolyer |
Jul. 21, 1987 |
| 4673725 |
Process for the preparation of aromatic oligomers |
Jun. 16, 1987 |
| 4579935 |
Method for manufacturing polymer or copolymer of trioxane |
Apr. 1, 1986 |
| 4547565 |
Method for manufacturing trioxane copolymer |
Oct. 15, 1985 |
| 4504636 |
Process for preparation of formaldehyde copolymers |
Mar. 12, 1985 |
| 4489027 |
Process for preparing solvent resistant, thermoplastic aromatic poly(imidesulfone) |
Dec. 18, 1984 |
| 4436900 |
Process for deactivating polymerization catalyst |
Mar. 13, 1984 |
| 4390684 |
Continuous polymerization method |
Jun. 28, 1983 |
| 4380610 |
Polyacetal comb polymers |
Apr. 19, 1983 |
| 4377667 |
Polyacetal and process of producing same |
Mar. 22, 1983 |
| 4343929 |
Process for continuously polymerizing trioxane |
Aug. 10, 1982 |
| 4339569 |
Process for continuous production of oxymethylene polymer or copolymer |
Jul. 13, 1982 |
| 4315092 |
Polyacetal carboxylates |
Feb. 9, 1982 |
| 4312977 |
Process for the production of high molecular weight oxymethylene copolymer in the presence of impurity |
Jan. 26, 1982 |
| 4259473 |
Process for making self-curing or curable materials from coal hydrogenation distillate residues |
Mar. 31, 1981 |
| 4224435 |
Method for mixing raw materials for producing oxymethylene copolymers |
Sep. 23, 1980 |
| 4200730 |
Chemical modification of microscopic opacifying particles |
Apr. 29, 1980 |
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