WO2008104999A2 - Novel adducts as branching agents for condensation polymer and method for producing the same - Google Patents

Novel adducts as branching agents for condensation polymer and method for producing the same Download PDF

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Publication number
WO2008104999A2
WO2008104999A2 PCT/IN2008/000115 IN2008000115W WO2008104999A2 WO 2008104999 A2 WO2008104999 A2 WO 2008104999A2 IN 2008000115 W IN2008000115 W IN 2008000115W WO 2008104999 A2 WO2008104999 A2 WO 2008104999A2
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Prior art keywords
amine
carboxylic acid
alcohol
anhydride
tri
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PCT/IN2008/000115
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French (fr)
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WO2008104999A3 (en
Inventor
Vikas Madhusudan Nadkarni
Subbiah Venkatachalam
Pandurang Nagnath Honkhambe
Amit Avinash Deshpande
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Reliance Industries Limited
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Publication of WO2008104999A3 publication Critical patent/WO2008104999A3/en

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/16—Dicarboxylic acids and dihydroxy compounds
    • C08G63/20—Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring

Definitions

  • Novel adducts as branching agents for condensation polymer and method for producing the same are novel adducts as branching agents for condensation polymer and method for producing the same.
  • the present invention also relates to method for producing the above adducts which are used as
  • Thermoplastic polymers are widely used in manufacturing of fibers or filaments or films or container by extrusion, molding (injection or stretch blow).
  • the polyester is known for deficiencies in melt rheology.
  • polyester has typically low melt viscosity, low melt strength and low melt elasticity.
  • the polyester have narrow processing window and specialized equipments are always required for the processing.
  • melt viscosity and melt strength of polyester or any condensation polymer can be improved by introducing branching in the linear chain structure of the polymer and / or increasing molecular weight through chain extension.
  • branching agent such as poly-functional carboxylic acids or anhydrides or alcohols directly during the polymerization reaction or melt mixing process.
  • branching agent used to modify polyester
  • the overall effect of the reaction-melt mixing may in fact decrease the molecular weight of the polyester.
  • branching agent used is a polyol branching agent.
  • Most widely used branching agents are tri-functional monomers such as 1,2,4 benzene tricarboxylic acid, 1,3,5-Benzenetricarboxylic acid, 1,1,1- Tris(hydroxymethyl)ethane, l,l,l-Tris(hydroxymethyl)propane and tetra-functional monomer such as pentaerythritol for condensation polymer.
  • branching agent used to effectively modify the polymer, it is important that the degree of branching can be controlled during the reaction and that the branching occurs uniformly in the polymer.
  • the most simple way in which the agent can be added to the polymer is by direct addition.
  • this mode of addition has been found to lead to gel formation through excessive localized chain coupling and non uniform branching within the modified polymer. This also leads to detrimental discolouration.
  • amount of less than 1000 ppm weight percent of the branching agent, relative to the polymer to be modified At these low levels, it is difficult to provide a uniform distribution of the branching agent in the polymer by direct addition, which leads to non- uniform branching in polymer.
  • branching agents being multifunctional, are active and if used directly in the polymerization reaction, it may be difficult to control the chain length and distribution of branching, which ultimately affects melt viscosity.
  • non-uniform branching makes the polymer product inconsistent in quality including inconsistent polymer rheology, which leads to spinning problem as well as abnormalities in down stream processing.
  • branching agent which comprises at least one tri-functional carboxylic acid or anhydride thereof, at least one mono alkyl alcohol / mono alkyl amine and at least one diol / diamine as per the invention.
  • An object of the invention is to provide novel adducts which comprise at least one tri-functional carboxylic acid or anhydride thereof, at least one mono alkyl alcohol / mono alkyl amine and at least one diol / diamine.
  • Another object of the invention is to provide the above adducts which are used as branching agent for condensation polymers.
  • Another object of the invention is to provide the above adducts as branching agent for condensation polymers where the final product is cost-effective as there is no occurrence of gelling.
  • Another object of the invention is to provide the above adduct as branching agent for condensation polymers where the final product is consistent in quality as the branching occurs uniformly in the polymer chain and controlled chain length.
  • Another object of the invention is to provide a method for producing the above adducts.
  • novel adducts for use as branching agent for the condensation polymers comprise at least one tri-functional carboxylic acid or anhydride thereof, at least one mono alkyl alcohol /mono alkyl amine and at least one diol / diamine.
  • a process for the preparation of the above adducts which are used as branching agent for condensation polymers comprises a) condensing at least one tri-functional carboxylic acid or anhydride thereof with at least one mono alkyl alcohol / mono alkyl amine at temperature upto 250° C and under pressure upto 2 Kg/cm 2 ; b) further reacting with at least one diol / diamine at temperature upto 250° C and under pressure upto 2 Kg/cm 2 to form an adduct; and c) isolating the adduct by evaporation.
  • the tri-functional carboxylic acid or anhydride thereof is selected from 1,3,5-Benzene-tri- carboxylic acid, 1,2,3-Benzene-tri-carboxylic acid or anhydride thereof, 1,2,4-Benzene-tri- carboxylic acid (Trimelletic acid) or anhydride thereof, 2,3,6-naphthalene tri-carboxylic acid or anhydride thereof, perylene tri-carboxylic acid or anhydride thereof.
  • the mono alkyl alcohol is a long chain alcohol having carbon chain length of Ci to C 25 or highly substituted branched aliphatic or aromatic alcohol.
  • the long chain mono alkyl alcohol is selected from butanol, hexanol, heptanol, octanol, nonanol or dodecanol.
  • highly substituted branched aliphatic or aromatic alcohol is selected from isobutanol, isooctyl alcohol, isododecyl alcohol, neopentyl alcohol or benzyl alcohol.
  • the mono alkyl amine is highly substituted branched aliphatic amine selected from isopentyl amine, isobutyl amine, isooctyl amine, octyl amine, dodecyl amine or combinations thereof.
  • the diol is selected from monoethylene glycol, 1,3 -propane diol, 1,6-hexane diol or butane diol.
  • the diamine is selected from ethylene diamine, 1,3-propane diamine, 1,6- hexane diamine or 1,4-butane diamine.
  • the ratio of trifunctional carboxylic acid or anhydride thereof, mono alkyl alcohol / mono alkyl amine and diol /diamine is 1 :0.5:2 to 1 :1.5:7.
  • the adduct of the invention is added as a branching agent in the range of 0.1 to 10 % by wt. of the polyester, preferably in the range of 0.4 to 2 % by wt. of the polyester in the polymerization reaction.
  • adducts as branching agent in condensation polymers.
  • die swell of the polymer increased with increasing adduct content. This suggests the increased chain entanglement with increased branching and decreased crystallization rate.
  • the polyester has uniform branching in the polymer chain and branch length is controlled by controlling chain length of the alkyl group of the branching agent. There is no occurrence of gelling in the polymerization as well as in the product. Thus the final product is cost-effective. The final product is consistent in quality.
  • Trimelletic anhydride (424 g, 2.2 mol) and 1-octanol (287g, 2.2 mol) was heated at 200°C under nitrogen pressure of 25 psi with stirring. The reaction was carried out for 4 hours. The reaction mixture was cooled and further depressurized. To this reaction mixture, monoethylene glycol (MEG) (548 g 8.8 mol) was added. The reaction was further carried out at temperature of 220 0 C under the nitrogen pressure of 25 psi. for 4 hours. The reactor was depressurized and product was drained under hot condition. The product was characterized by NMR and saponification value.
  • MEG monoethylene glycol
  • Trimelletic anhydride (412 g, 2.14 mol) and 1-Dodecanol (40Og, 2.14 mol) was heated at 200 0 C under nitrogen pressure of 25 psi with stirring. The reaction was carried out for 4 hours. The reaction mixture was cooled and further depressurized. To this reaction mixture, monoethylene glycol (MEG) (532 g 8.28 mol) was added. The reaction was further carried out at temperature of 220 0 C under the nitrogen pressure of 25 psi. for 4hours. The reactor was depressurized and the product was drained at hot condition. The product was characterized by NMR and saponification value.
  • MEG monoethylene glycol
  • Monoethylene glycol MEG (6 kg) and purified terephthalic acid (PTA) (8 kg) (1:2 molar ratio) was esterified in the presence of Sb 2 O 3 (2. 8 g) as a catalyst at 26O 0 C under nitrogen pressure of 1.5 - 1.85 kg / cm 2 .
  • Monoethylene glycol MEG (6 kg) and purified terephthalic acid (PTA) (8 kg) (1:2 molar ratio) were esterified in the presence of Sb 2 O 3 (2. 8 g) as a catalyst at 26O 0 C under nitrogen pressure of 1.5 - 1.85 kg / cm 2 .
  • the branching agent prepared according to the example 1 was added at the end of esterification at 26O 0 C and the resultant reaction mixture was further agitated for 30 minutes.
  • the esterified mixture was polycondensed at 285 0 C under reduced pressure of 1-5 mm Hg. After a certain rise in torque, vacuum was broken and the reactor was pressurized with nitrogen. The polymer was drained as strands by quenching in a water bath.
  • the strands are then cut into chips in a pelletizer.
  • the presence of branching in copolyester was confirmed by GPC, DSC and Rheology.
  • the occurrence of branching is often accompanied by broadening of the molecular weight distribution.
  • Polydispersity data is found to be in the range 3.0 to 3.6 indicating the broadening of molecular weight distribution due the branching (Table 1).

Abstract

Novel adducts are used as branching agent for condensation polymers. The branching agent comprises at least one tri-functional carboxylic acid or anhydride thereof, at least one mono alkyl alcohol / mono alkyl amine and at least one diol / diamine. A process for the preparation of above adduct is disclosed herein.

Description

TITLE OF THE INVENTION
Novel adducts as branching agents for condensation polymer and method for producing the same.
The present invention also relates to method for producing the above adducts which are used as
branching agent for condensation polymers.
BACKGROUND OF THE INVENTION
Thermoplastic polymers, particularly polyesters are widely used in manufacturing of fibers or filaments or films or container by extrusion, molding (injection or stretch blow). However, the polyester is known for deficiencies in melt rheology. In particular, polyester has typically low melt viscosity, low melt strength and low melt elasticity. With such limitations, the polyester have narrow processing window and specialized equipments are always required for the processing. Generally melt viscosity and melt strength of polyester or any condensation polymer can be improved by introducing branching in the linear chain structure of the polymer and / or increasing molecular weight through chain extension. One approach of introducing branching in polymer is by adding branching agent such as poly-functional carboxylic acids or anhydrides or alcohols directly during the polymerization reaction or melt mixing process. Depending upon the type of branching agent used to modify polyester, the overall effect of the reaction-melt mixing may in fact decrease the molecular weight of the polyester. This will often be the case where the only type of branching agent used is a polyol branching agent. Most widely used branching agents are tri-functional monomers such as 1,2,4 benzene tricarboxylic acid, 1,3,5-Benzenetricarboxylic acid, 1,1,1- Tris(hydroxymethyl)ethane, l,l,l-Tris(hydroxymethyl)propane and tetra-functional monomer such as pentaerythritol for condensation polymer. Regardless of the type of branching agent used to effectively modify the polymer, it is important that the degree of branching can be controlled during the reaction and that the branching occurs uniformly in the polymer. The most simple way in which the agent can be added to the polymer is by direct addition. However, this mode of addition has been found to lead to gel formation through excessive localized chain coupling and non uniform branching within the modified polymer. This also leads to detrimental discolouration. Furthermore, it is not uncommon to use amount of less than 1000 ppm weight percent of the branching agent, relative to the polymer to be modified. At these low levels, it is difficult to provide a uniform distribution of the branching agent in the polymer by direct addition, which leads to non- uniform branching in polymer. The above branching agents, being multifunctional, are active and if used directly in the polymerization reaction, it may be difficult to control the chain length and distribution of branching, which ultimately affects melt viscosity. Thus non-uniform branching makes the polymer product inconsistent in quality including inconsistent polymer rheology, which leads to spinning problem as well as abnormalities in down stream processing.
We have not come across any existing reference of the branching agent, which comprises at least one tri-functional carboxylic acid or anhydride thereof, at least one mono alkyl alcohol / mono alkyl amine and at least one diol / diamine as per the invention.
OBJECTS OF THE INVENTION
An object of the invention is to provide novel adducts which comprise at least one tri-functional carboxylic acid or anhydride thereof, at least one mono alkyl alcohol / mono alkyl amine and at least one diol / diamine.
Another object of the invention is to provide the above adducts which are used as branching agent for condensation polymers.
Another object of the invention is to provide the above adducts as branching agent for condensation polymers where the final product is cost-effective as there is no occurrence of gelling.
Another object of the invention is to provide the above adduct as branching agent for condensation polymers where the final product is consistent in quality as the branching occurs uniformly in the polymer chain and controlled chain length.
Another object of the invention is to provide a method for producing the above adducts.
DETAILED DESCRIPTION
According to the invention there is provided novel adducts for use as branching agent for the condensation polymers, said adducts comprise at least one tri-functional carboxylic acid or anhydride thereof, at least one mono alkyl alcohol /mono alkyl amine and at least one diol / diamine. According to the invention there is also provided a process for the preparation of the above adducts which are used as branching agent for condensation polymers, the process comprises a) condensing at least one tri-functional carboxylic acid or anhydride thereof with at least one mono alkyl alcohol / mono alkyl amine at temperature upto 250° C and under pressure upto 2 Kg/cm2; b) further reacting with at least one diol / diamine at temperature upto 250° C and under pressure upto 2 Kg/cm2 to form an adduct; and c) isolating the adduct by evaporation.
The tri-functional carboxylic acid or anhydride thereof is selected from 1,3,5-Benzene-tri- carboxylic acid, 1,2,3-Benzene-tri-carboxylic acid or anhydride thereof, 1,2,4-Benzene-tri- carboxylic acid (Trimelletic acid) or anhydride thereof, 2,3,6-naphthalene tri-carboxylic acid or anhydride thereof, perylene tri-carboxylic acid or anhydride thereof. The mono alkyl alcohol is a long chain alcohol having carbon chain length of Ci to C25 or highly substituted branched aliphatic or aromatic alcohol. Preferably, the long chain mono alkyl alcohol is selected from butanol, hexanol, heptanol, octanol, nonanol or dodecanol. Preferably highly substituted branched aliphatic or aromatic alcohol is selected from isobutanol, isooctyl alcohol, isododecyl alcohol, neopentyl alcohol or benzyl alcohol. The mono alkyl amine is highly substituted branched aliphatic amine selected from isopentyl amine, isobutyl amine, isooctyl amine, octyl amine, dodecyl amine or combinations thereof. The diol is selected from monoethylene glycol, 1,3 -propane diol, 1,6-hexane diol or butane diol. The diamine is selected from ethylene diamine, 1,3-propane diamine, 1,6- hexane diamine or 1,4-butane diamine. The ratio of trifunctional carboxylic acid or anhydride thereof, mono alkyl alcohol / mono alkyl amine and diol /diamine is 1 :0.5:2 to 1 :1.5:7. The adduct of the invention is added as a branching agent in the range of 0.1 to 10 % by wt. of the polyester, preferably in the range of 0.4 to 2 % by wt. of the polyester in the polymerization reaction.
According to the invention there is provided use of above adducts as branching agent in condensation polymers. On incorporation of adducts as branching agent in polymer, die swell of the polymer increased with increasing adduct content. This suggests the increased chain entanglement with increased branching and decreased crystallization rate. According to the die swell data, the polyester has uniform branching in the polymer chain and branch length is controlled by controlling chain length of the alkyl group of the branching agent. There is no occurrence of gelling in the polymerization as well as in the product. Thus the final product is cost-effective. The final product is consistent in quality.
Although the invention has been described with reference to specific examples, it will be appreciated by those skilled in the art that the invention may be embodied in many other forms.
Example 1
1, 4- bis(2-hydroxy ethyl) 2-octyl tribenzoate
Trimelletic anhydride (424 g, 2.2 mol) and 1-octanol (287g, 2.2 mol) was heated at 200°C under nitrogen pressure of 25 psi with stirring. The reaction was carried out for 4 hours. The reaction mixture was cooled and further depressurized. To this reaction mixture, monoethylene glycol (MEG) (548 g 8.8 mol) was added. The reaction was further carried out at temperature of 2200C under the nitrogen pressure of 25 psi. for 4 hours. The reactor was depressurized and product was drained under hot condition. The product was characterized by NMR and saponification value.
NMR data:
1H-NMR (CDCl3, ppm): 8.5 (d, IH), 8.2 (dd, IH), 7.7 (d, IH), 4.7 (m, 2H), 4.4 (m, 2H), 4.3 (m,
2H), 3.9 (m, 4H), 1.8 (m, 2H), 1.3 (m, 10H), 0.95 (t, 3H). Sap. Value = 410 meq KOH/g
Example 2
1, 4- bis(2-hydroxy ethyl) 2-dodecyl tribenzoate
Trimelletic anhydride (412 g, 2.14 mol) and 1-Dodecanol (40Og, 2.14 mol) was heated at 2000C under nitrogen pressure of 25 psi with stirring. The reaction was carried out for 4 hours. The reaction mixture was cooled and further depressurized. To this reaction mixture, monoethylene glycol (MEG) (532 g 8.28 mol) was added. The reaction was further carried out at temperature of 2200C under the nitrogen pressure of 25 psi. for 4hours. The reactor was depressurized and the product was drained at hot condition. The product was characterized by NMR and saponification value.
1H-NMR (CDCl3, ppm): 8.47 (d, IH), 8.23 (dd, IH), 7.67 (d, IH), 4.64 (m, 2H), 4.42 (m, 2H), 4.3 (m, 2H), 3.91 (m, 4H), 1.82 (m, 2H), 1.28 (m, 18H), 0.93 (t, 3H). Sap. Value = 360 meq KOH/g
Example 3
Control polyester without adduct
Monoethylene glycol MEG (6 kg) and purified terephthalic acid (PTA) (8 kg) (1:2 molar ratio) was esterified in the presence of Sb2O3 (2. 8 g) as a catalyst at 26O0C under nitrogen pressure of 1.5 - 1.85 kg / cm2. Polycondensing the esterified mixture at 2850C under reduced pressure of 1-5 mm Hg. After a certain rise in torque, vacuum was broken and the reactor was pressurized with nitrogen. The polymer was drained as strands by quenching in a water bath. The strands are then cut into chips in a pelletizer. The polyester obtained was used as control.
Example 4
Polyester with adduct prepared according to Example 1
Monoethylene glycol MEG (6 kg) and purified terephthalic acid (PTA) (8 kg) (1:2 molar ratio) were esterified in the presence of Sb2O3 (2. 8 g) as a catalyst at 26O0C under nitrogen pressure of 1.5 - 1.85 kg / cm2. The branching agent prepared according to the example 1 was added at the end of esterification at 26O0C and the resultant reaction mixture was further agitated for 30 minutes. The esterified mixture was polycondensed at 2850C under reduced pressure of 1-5 mm Hg. After a certain rise in torque, vacuum was broken and the reactor was pressurized with nitrogen. The polymer was drained as strands by quenching in a water bath. The strands are then cut into chips in a pelletizer. The presence of branching in copolyester was confirmed by GPC, DSC and Rheology. The occurrence of branching is often accompanied by broadening of the molecular weight distribution. Polydispersity data is found to be in the range 3.0 to 3.6 indicating the broadening of molecular weight distribution due the branching (Table 1). Figure 1 illustrates Die swell (referred to as 1) data at various shear rates [referred to as 2 (Sec"1)] measured at barrel temperature of 275 °C using Capillary Rheometer (Die diameter = 1 mm and Die Length = 10 mm) for control sample (ie without additive), polyester comprising 1% adduct and polyester comprising 1.5 % adduct. Die swell of control, polyester comprising 1% adduct and polyester comprising 1.5 % adduct at various shear rates (Sec"1) are indicated by 3, 4 and 5 respectively. Die swell of the polymer increases with increasing adduct content (Figure 1), this suggests the increased chain entanglement with increased branching. The increased branching should always result in decrease in crystallization rate which is seen (Table 2) from the drop in crystallization temperature as seen from the DSC data.
Table 1 : Polydispersity data from GPC analysis:
Figure imgf000007_0001
Table 2: Crystallization temperature data from DSC analysis
Figure imgf000007_0002

Claims

1. Novel adducts which are used as branching agent for condensation polymer, said branching agent comprises at least one tri-functional carboxylic acid or anhydride thereof, at least one mono alkyl alcohol / mono alkyl amine and at least one diol / diamine.
2. The adducts which are used as branching agent as claimed in claim 1, wherein the tri- functional carboxylic acid or anhydride thereof is selected from 1,3,5-Benzene-tri- carboxylic acid, 1,2,3-Benzene-tri-carboxylic acid or anhydride thereof, 1,2,4-Benzene-tri- carboxylic acid (Trimelletic acid) or anhydride thereof, 2,3,6-naphthalene tri-carboxylic acid or anhydride thereof, perylene tri-carboxylic acid or anhydride thereof.
3. The adducts which are used as a branching agent as claimed in claim 1, wherein the mono alkyl alcohol is a long chain alcohol having carbon chain length of C1 to C25 selected from butanol, hexanol, heptanol, octanol, nonanol or dodecanol or highly substituted branched aliphatic or aromatic alcohol selected from isobutanol, isooctyl alcohol, isododecyl alcohol, neopentyl alcohol or benzyl alcohol.
4. The adducts which are used as branching agent as claimed in claim 1, wherein the mono alkyl amine is highly substituted branched aliphatic amine selected from isopentyl amine, isobutyl amine, isooctyl amine, octyl amine, dodecyl amine or combinations thereof.
5. The adducts which are used as branching agent as claimed in claim 1, wherein the diol is selected from monoethylene glycol, 1,3-propane diol, 1,6-hexane diol or butane diol.
6. The adducts which are used as branching agent as claimed in claim 1, wherein the diamine is selected from ethylene diamine, 1,3-propane diamine, 1,6-hexane diamine or 1,4-butane diamine.
7. The adducts which are used as branching agent as claimed in claim 1, wherein the ratio of trifunctional carboxylic acid or anhydride thereof, mono alkyl alcohol / mono alkyl amine and diol / diamine is in the range of 1 : 0.5 : 2 to 1:1.5:7.
8. A process for the preparation of the adducts according to claim 1 which are used as branching agent for the condensation polymer, the process comprises; a) condensing at least one tri-functional carboxylic acid or anhydride thereof with at least one mono alkyl alcohol / mono alkyl amine at temperature upto 250° C and under pressure upto 2 Kg/cm2; b) further reacting with at least one diol / diamine at temperature upto 250° C and under pressure upto 2 Kg/cm2 to form an adduct; and c) isolating the adduct by evaporation.
9. The process as claimed in claim 7, wherein the tri-functional carboxylic acid or anhydride thereof is selected from 1,3,5-Benzene-tri-carboxylic acid, 1,2,3-Benzene-tri-carboxylic acid or anhydride thereof, 1 ,2,4-Benzene-tri-carboxylic acid (Trimelletic acid) or anhydride thereof, 2,3,6-naphthalene tri-carboxylic acid or anhydride thereof, perylene tri-carboxylic acid or anhydride thereof.
10. The process as claimed in claim 7, wherein the mono alkyl alcohol is a long chain alcohol having carbon chain length of C1 to C25 selected from butanol, hexanol, heptanol, octanol, nonanol or dodecanol or highly substituted branched aliphatic or aromatic alcohol selected from isobutanol, isooctyl alcohol, isododecyl alcohol, neopentyl alcohol, benzyl alcohol.
11. The process as claimed in claim 7, wherein the mono alkyl amine is highly substituted branched aliphatic amine selected from isopentyl amine, isobutyl amine, isooctyl amine, octyl amine, dodecyl amine or combinations thereof.
12. The process as claimed in claim 7, wherein the diol is selected from monoethylene glycol, 1,3 -propane diol, 1 ,6-hexane diol or butane diol.
13. The process as claimed in claim 7, wherein the diamine is selected from from isopentyl amine, isobutyl amine, isooctyl amine or octyl amine, dodecyl amine or combinations thereof.
14. The process as claimed in claim 1, wherein the ratio of trifunctional carboxylic acid or anhydride thereof, mono alkyl alcohol / mono alkyl amine and diol / diamine is in the range of 1 : 0.5: 2 to 1 :1.5:7.
PCT/IN2008/000115 2007-03-01 2008-02-29 Novel adducts as branching agents for condensation polymer and method for producing the same WO2008104999A2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
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US8940401B2 (en) 2011-06-10 2015-01-27 Resinate Technologies, Inc. Clear coatings acrylic coatings
US9458354B2 (en) 2010-10-06 2016-10-04 Resinate Technologies, Inc. Polyurethane dispersions and methods of making and using same

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Publication number Priority date Publication date Assignee Title
US4542165A (en) * 1983-09-08 1985-09-17 Sanyo Chemical Industries, Ltd. Polyurethane based on epoxy-containing polymer polyol and process for making the same
US4983716A (en) * 1990-01-16 1991-01-08 The Sherwin-Williams Company Non-aqueous dispersions
US20030216539A1 (en) * 1998-10-29 2003-11-20 Siclovan Tiberiu Mircea Weatherable block copolyestercarbonates, blends containing them, and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4542165A (en) * 1983-09-08 1985-09-17 Sanyo Chemical Industries, Ltd. Polyurethane based on epoxy-containing polymer polyol and process for making the same
US4983716A (en) * 1990-01-16 1991-01-08 The Sherwin-Williams Company Non-aqueous dispersions
US20030216539A1 (en) * 1998-10-29 2003-11-20 Siclovan Tiberiu Mircea Weatherable block copolyestercarbonates, blends containing them, and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9458354B2 (en) 2010-10-06 2016-10-04 Resinate Technologies, Inc. Polyurethane dispersions and methods of making and using same
US8940401B2 (en) 2011-06-10 2015-01-27 Resinate Technologies, Inc. Clear coatings acrylic coatings

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