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Class 528/339 - From at least two dicarboxylic acids or derivatives or mixtures thereof


Subclass of Class 528 - Synthetic resins or natural rubbers -- part of the class 520 series
Definition: Subject matter wherein a polymer is derived from at least
No. of patents: 332
Last issue date: 06/17/2008


1                  
NumberTitleIssue Date
7388048Flexible semiaromatic polyamides with a low moisture uptake
The present invention relates to a flexible semiaromatic polyamide composition with a low moisture uptake comprising, by weight, the total being 100: 60 to 99.5% (preferably 70 to 93%) of at least one copolyamide of formula X/Y,Ar ...
06/17/2008
7381788Method for continuous production of polyamide
Provided is a continuous production method of a polyamide with stabilized polymerization degree and good quality, particularly an aromatic-containing polyamide. A continuous production method of a polyamide, comprising (a) a raw material preparation step of individu...
06/03/2008
7101652Photosensitive resin compositions
New photosensitive PBO precursor polymers which contain diazoquinone moieties attached to its backbone and in which all amino end groups are converted into amide groups. The photosensitive formulation based on the disclosed PBO precursor polymers have good imaging a...
09/05/2006
7101612Pre-moistened wipe product
The present invention provides ion-sensitive, water-dispersible polymers. The present invention also provides a method of making ion-sensitive, water-dispersible polymers and their applicability as binder compositions. The present invention further provides fiber-co...
09/05/2006
7060782Process for a two stage melt polymerization for the production of polybenzimidazole having an improved solid state polymerization
A process for the production of high molecular weight polybenzimidazole by one: providing a first reaction vessel; charging the reaction vessel with at least one aromatic hydrocarbon tetraamine, and a heterocylic ring making up the dicarboxylic component; heating th...
06/13/2006
7057008Packaging and containers made of water-soluble polyamides and processes for their manufacture
Packaging materials made from water-soluble nylons are disclosed, that readily contain materials such as caustic chemicals and upon exposure to water dissolve to provide for the release of the chemical into an aqueous environment. The materials are made from select ...
06/06/2006
7053172Fuel-barrier polyamide resin and multilayer shaped article
The fuel-barrier polyamide resin of the present invention is a product of the polycondensation of a diamine component comprising 70 mol % or higher of m-xylylenediamine and a dicarboxylic acid component comprising 70 mol % or higher of a mixed dicarboxylic acid whic...
05/30/2006
7053169Polyamide molding compounds for producing optical lenses
The invention relates to new thermoplastically processible transparent polyamide molding materials based on copolyamides containing diamines and dicarboxylic acids with aromatic cores which exhibit a high index of refraction nD20 over 1.59 and ...
05/30/2006
7038007Process for a continuous polymerization for the production of high molecular weight polybenzimidazole
A process for a single-stage melt polymerization for the production of a high molecular weight polybenzimidazole which comprises the steps of: providing a reaction vessel having a means for agitation and a means for vacuum; charging the reaction vessel with reactant...
05/02/2006
7026435Water-dispersible, hydrophobic polyalkyleneimine polyamide fiberglass lubricant, process for producing the same, and method of use therefor
Polymer derivatives based upon polyalkyleneimine backbones having from about 20% to about 60% of their reactive amino functionalities substituted by C14-20 carboxylic acids, are disclosed. Fiber lubricants and/or sizing compositions comprising such polyme...
04/11/2006
6995233Process for manufacturing polyamides
The invention relates to a continuous process for manufacturing polyamides. The polyamides are of the type obtained from diacids and diamines. The process comprises an operation of continuous mixing of a compound which is rich in amine end groups and a compound whic...
02/07/2006
6943231Transparent polyamide molding materials having improved transparency, resistance to chemicals and high permanent fatigue strength
Transparent polyamide molding materials are provided which are characterized in that they have a melting enthalpy between 0 and 12 J/g and the polyamides are constituted of 100 mole-% of a diamine mixture having 10-70 mole-% of PACM [bis-(4-amino-cyclohexyl)-...
09/13/2005
6936682Polyamide
A polyamide characterized in that the polyamide is obtained by thermal polycondensation of (a) dicarboxylic acid components comprising 10 to 80% by mole in total carboxylic acid components of 1,4-cyclohexanedicarboxylic acid having a trans/cis molar ratio of 50/50 t...
08/30/2005
6911501Process for preparing aspartates
The present invention relates to novel aspartates, their method of production and the use of these aspartates as reactive components for polyisocyanates in two-component polyurethane coating compositions and for preparing polyurethane prepolymers. The aspartates are...
06/28/2005
6906165Copolyamides and compositions based on same
The invention concerns copolyamides obtained by using multifunctional monomers. It consists in using a multifunctional monomer comprising at least three reactive functions and at least another multifunctional monomer, in amounts such that the terminal group concentr...
06/14/2005
6884865Copolyamides and compositions based on same
The invention concerns copolyamides obtained by using multifunctional monomers. It consists in using at least one multifunctional monomer comprising at least three reactive functions and at least another multifunctional monomer, in amounts such that the terminal gro...
04/26/2005
6864349Aqueous suspensions containing polymerized fatty acid-based polyamides
Polymerized fatty acid-based polyamides may be combined with low polarity and high polarity co-solvents to produce homogeneous water-in-oil emulsions. These emulsions have the appearance of white or translucent creams, with stiffnessranging from soft and greasy, to ...
03/08/2005
6855776Amino-terminated polybutadienes
Improved amine-terminated polybutadienes (ATPBs) having one or two terminal groups of the formula —CHRNH2 wherein R is C1-C20 alkyl, are prepared by aminating a secondary hydroxyl-terminated polybutadiene having no ether groups. Th...
02/15/2005
6841651Polyamide resin
The polyamide resin of the present invention is produced by polycondensation of a diamine component comprising 70 mol % or more of m-xylylenediamine and a dicarboxylic acid component comprising 70 mol % or more of a C4-C20 α, ω-straight-chain aliphatic dicarboxyli...
01/11/2005
6835391Poly (ether ester amide) and poly (ether ester urethane) copolymers
The invention relates to new biologically degradable aliphatic copolymers of the polyesteramide or polyesterurethane type. The invention further relates to a method for preparing the copolymers and to products which can be manufactured from the new copolymers. ...
12/28/2004
6835800Nylon copolymers containing dimeric acid comonomers
A method for preparing a nylon 6 copolymer containing dimeric acid comonomers. The method includes reacting 80.0˜99.9 mol % of caprolactam, 0.1˜3.0 mol % of dimeric acid and 0.1˜3.0 mol % of 2-methyl-1,5-pentadiamine in a polymerization reaction. Moreover, the in...
12/28/2004
6780963Molding material for electrical and electronic parts
The polyamide resin composition of the invention is characterized by having a solder reflow heat-resistant temperature of not lower than 250° C. Since the polyamdie resin composition has low water absorption and is excellent in moldability, heat resistance, shape s...
08/24/2004
6774205Polyamides
A process for the preparation of novel polyamides, the use of such polyamides for the production of fibers, sheets and moldings, and fibers, sheets and moldings obtainable from such polyamides, are provided. ...
08/10/2004
6774208Friction heat, cryogenic quench solid state polymerization
A two step method for solid state polymerization of dry crystalline thermoplastic polymers to form polymers with superior mechanical properties, first by mechanically fluidizing dry crystalline thermoplastic polymer particles in the absence of oxygen by means of bla...
08/10/2004
6759505Single-phase or multi-phase continuous polyamide polymerization processes
There is provided a process for the continuous polymerization of polyamides which is carried out under conditions of pressure, temperature and polymer concentration in water that will ultimately yield multiple phases (including a second liquid polymer phase or a pol...
07/06/2004
6750317Material and additive for highly crosslinked chemically and thermally stable polyhydroxyamide polymers
Polyhydroxyamides are polymerized to form highly-crosslinked, temperature-stable polymers. The polyhydroxyamides include as their central, parent structure a benzenetricarboxylic acid to which side chains containing a terminal reactive group are attached by an amide...
06/15/2004
6747120Copolyamide based on tetramethylene terephthalamide and hexamethylene terephthalamide
The invention relates to a semi-aromatic polyamide containing at least tetramethylene terephthalamide units and also hexamethylene terephthalamide units. The copolyamide has a melting point higher than approximately 290° C., a high crystallinity and a good s...
06/08/2004
6696544Method for making polyamides
The invention concerns a method for making polyamide. More particularly, the invention concerns a method for making polyamides derived from the reaction between a diacid and a diamine. It concerns a method for making a polyamide derived from the reaction ...
02/24/2004
6680364Water dispersible polyamides with ethylenically unsaturated ends
The invention describes polyamides having both strongly hydrophilic groups and unsaturated groups, the polyamides consequently being water-dispersible and curable. The hydrophilic groups are distributed along the chain, whereas the unsaturated groups are ...
01/20/2004
6670442Hot melt adhesives based on polyamides
Hot melt adhesives are prepared using thermoplastic polyamides derived from polymerized fatty acid components. The adhesives are particularly useful for bonding nonpolar substrates such as poly-଱-olefins....
12/30/2003
6667382Polyamine
The present invention provides an amine or polyamine, which has a surface activity not inferior to a solid tallow-based amine and an excellent workability. A salt of the amine is suited for emulsifying asphalt and the like, and also provides an asphalt em...
12/23/2003
6610816Process for production of polyamide
In the production of polyamide by the melt-polymerization of the present invention, the polymerization conditions are rapidly and accurately controlled by a near-infrared spectroscopy to enable the efficient production of a desired polyamide with a good s...
08/26/2003
6517343Coated candles and coating compositions
A curable composition is placed on a candle, and then the composition is exposed to curing conditions such as ultraviolet light, to thereby cure the coating composition and provide a candle having a cured coating. The curable composition may be the reacti...
02/11/2003
6503538Elastomeric functional biodegradable copolyester amides and copolyester urethanes
The present invention provides elastomeric copolyester amides, elastomeric copolyester urethanes, and methods for making the same. The polymers that are based on ଱-amino acids and possess suitable physical, chemical and biodegradation properties. Th...
01/07/2003
6503077Gelled articles containing tertiary amide-terminated polyamide
A tertiary amide-terminated dimer acid-based polyamide may be blended with a solvent to form a gel. The solvent may be flammable, and a wick may be added to the resulting gel so as to form a candle. Depending on the composition, the candle may be formed i...
01/07/2003
6503522Tertiary amide-terminated polyamides in structured personal care compositions
A structured, solid composition that contains at least one colorant, a liquid oil phase, and a gellant, wherein the gellant is a tertiary amide-terminated polyamide resin (ATPA) of the formula (1): ##STR1## wherein, n designates a number of repeating unit...
01/07/2003
6489435Process for producing polyamide
The improved polyamide production method of the present invention is characterized by including a step of accurately regulating the molar balance between a diamine component and a dicarboxylic acid component to a desired balance in a batch-wise regulation...
12/03/2002
6469131Structured composition containing tertiary amide-terminated polyamide for personal care products
1. A structured composition comprising at least one liquid oil phase structured by at least one gellant, said at least one gellant comprising a tertiary amide-terminated polyamide resin (ATPA) of the formula (1): ##STR1## wherein, n designates a number of...
10/22/2002
6444272Single-packaged epoxy resin coating composition
The present invention relates to a single-packaged epoxy resin coating composition comprising: (A) an epoxy resin having at least one epoxy group in a molecule and capable of being dissolved in the following organic solvent (D), (B) a ketimines compound having...
09/03/2002
6423304Dimerized fatty acid based polyamides useful for clear candle and gel applications
Blooming and/or syneresis in gel formulations can be reduced or eliminated by adding to an organic mixture an effective amount of a polyamide gelling agent having a softening point of less than about 105° C. wherein the polyamide is the reaction product ...
07/23/2002
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