Unlock instant, AI-driven research and patent intelligence for your innovation.

Isocyanate-modified polyester-epoxide polymer compositions

A technology of epoxy polymers and polyepoxides, applied in polyurea/polyurethane adhesives, adhesive types, polyurea/polyurethane coatings, etc.

Active Publication Date: 2019-11-12
STEPAN COMPANY
View PDF10 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The challenge for most epoxy-based products is to manufacture a product with the desired elasticity at low cost while retaining other important properties

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Isocyanate-modified polyester-epoxide polymer compositions
  • Isocyanate-modified polyester-epoxide polymer compositions
  • Isocyanate-modified polyester-epoxide polymer compositions

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0088] Preparation of IPA-DEG ​​polyol

[0089] Isophthalic acid (652.7 g) and diethylene glycol (688.9 g) were charged to a reaction vessel equipped with mechanical stirring, temperature probe, nitrogen inlet and packed condenser column with sidearm condenser. The mixture was heated to 220°C in about 1 h. The distillate was removed quickly and the mixture became clear. After 8h, the acid value reached 13mg KOH / g. After cooling overnight, resume heating. When the temperature reached 200°C, tetrabutyl titanate (0.36 g) was added. The hydroxyl value is 213 mg KOH / g. Diethylene glycol (31 g) was added and the mixture was heated to 220°C until the reaction was complete. Final hydroxyl value (corrected): 236 mg KOH / g.

[0090] Preparation of IPA-HDO polyol

[0091] Isophthalic acid (1960 g) and 1,6-hexanediol (2465 g) were charged to a reaction vessel equipped with mechanical stirring, temperature probe, nitrogen inlet and packed condenser column with sidearm condenser. ...

Embodiment 1

[0094] Will PS-2402 polyester polyol (48.0g, the product of Stepan Company) at room temperature with 828 resin (28.0g, the product of Hexion Specialty Chemical Company), M-20 polymerization MDI (20.0g, the product of BASF) and B-610 catalyst (4.0 g, 4.0 wt%, product of Liposi Plastics) was mixed quickly. The molar ratio of the epoxide to isocyanate is 1:1. The i-PEEP index was 149. The mixture became clear after a few seconds. Continue mixing for 30 seconds. After about 3.5 minutes the material will harden to form a cured product. The properties of polymers made from this material, including cast elastomers, coatings and adhesives, are listed in Table 1 below.

Embodiment 2-20

[0096] Basically adopt the step of embodiment 1, use 828 resin, M-20 or M10, and an aromatic polyester polyol listed in Table 1 or an aliphatic polyester polyol listed in Table 2. The catalyst level was adjusted to achieve a gel time of 3.5-4 minutes. The properties of the resulting cast elastomers are listed in the table below.

[0097] Coating and Elastomer Sample Preparation

[0098] Each of the above reaction products was either poured into a mold or stretched down to the surface to provide elastomer or coating samples, respectively, for testing. Elastomers were prepared by pouring approximately 100 g of the reaction mixture into a 7 in x 7 in x 0.1 in (7” x 7” x 0.1”) mold (at ambient conditions, coated with mold release) approximately 90 s after commencing mixing Samples. Allow material to spread for approximately 30 seconds, then drape. Position tongue depressors at the edge of the mold to provide approximately 0.07 inches of peripheral venting. Prior to physica...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
hydroxyl valueaaaaaaaaaa
acid valueaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
Login to View More

Abstract

Isocyanate-modified polyester-epoxide polymer (i-PEEP) compositions are disclosed. The i-PEEP compositions comprise a reaction product of a polyepoxide compound, a polyisocyanate, and a polyester polyol composition. The ratio of epoxy equivalents to hydroxyl equivalents is within the range of 0.2 to 2. The i-PEEP index as defined herein is within the range of 100 to 200. The i-PEEP composition hasa Tg within the range of -30DC to 35DC. Low- and elevated-temperature processes catalyzed by bases or Lewis acids for making the i-PEEP compositions are also disclosed. In a simple yet innovative approach, a new class of polymers useful for coatings, elastomers, adhesives, sealants, and other valuable products is assembled from readily available starting materials without reliance on the polyamines typically used to cure epoxy systems.

Description

technical field [0001] This invention relates to isocyanate-modified polyester-epoxy polymer (i-PEEP) compositions and their use in coatings, elastomers, adhesives and others. Background technique [0002] Epoxy-functional compositions have long been considered the building blocks for making epoxy resins. For example, the reaction product of bisphenols and epichlorohydrin is the mainstay of the epoxy resin industry and is used as The resin (Hexion Specialty Chemicals) has been sold for many years. Epoxy resins are reacted with "hardeners" or other crosslinking agents (usually polyamines, polycarboxylic acids, or polythiols) to provide cured polymers for adhesives and other end uses. [0003] Epoxy resins are also often reacted with acrylic or methacrylic acid to form "vinyl ester" resins. Vinyl esters have hydroxyl and acrylic functional groups and are considered the "high end" category of unsaturated polyester resins. Like unsaturated polyester resins, vinyl ester resi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/00C08G18/42C08G18/18C09D175/06C08L75/06C09J175/06C08G18/76
CPCC08G18/58C08G18/7664C08G18/003C08G18/1825C09D175/06C08G18/4211C08G18/4216C08G18/4219C08G18/4238C08G18/4252C09J175/06C08G18/222C08G18/166C08G18/76C08L75/04C09D175/08
Inventor W·A·卡普兰J·S·韦斯特福尔
Owner STEPAN COMPANY
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com