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

Latex formulations with reduced yellowing

A kind of latex and formula technology, applied in the field of non-yellow latex formula

Inactive Publication Date: 2006-02-01
BASF CORP
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is only a remedy in essence, and is not suitable for fundamentally solving this problem

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

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0073] Example 1: Single acrylic latex seeded with polystyrene

[0074] A reaction flask with a volume of 2 L was equipped with a mechanical stirring device, a reflux condenser, a thermometer and an inlet, and contained water (870 mL), latex seed crystals (68 g of a 33% by weight polystyrene emulsion), and Rhodapon SLS (15 grams of 33% (percentage by weight) hydration solution); Rhodapon SLS is a kind of sodium lauryl sulfate surfactant produced by Rhone-Planck, adding APS initiator (3 gram of initiator dissolved in 15 ml of water). After waiting 5 minutes, a mixture of 2-EHA (59.8 grams), MMA (150 grams), MAA (13 grams) and AAEM (25.7 grams) was added to the stirred reaction mixture at a rate of about 3.8 grams / minute. Aqueous ammonium hydroxide (1.03 g ammonium hydroxide dissolved in 33 mL water) was then added to the stirred reaction mixture over an additional 5 minutes. The reaction mixture was then stirred at 80°C for 15 minutes, and MMA (36.3 grams), 2-EHA (155.2 gram...

example 2

[0075] Example 2: Single acrylic latex with MMA seeds

[0076] A reaction flask with a volume of 2 liters was equipped with a mechanical stirring device, a reflux condenser, a thermometer and an inlet. Water (870 ml), latex seeds (68 grams of 33% (weight percent) MMA emulsion) and Rhodapon® were contained in the flask. SLS brand surfactant (15 grams of 33% (weight percent) hydration solution) was added at 80° C. with APS initiator (3 grams of initiator dissolved in 15 milliliters of water). After waiting 5 minutes, a mixture of 2-EHA (59.8 grams), MMA (150 grams), MAA (13 grams) and AAEM (25.7 grams) was added to the stirred reaction mixture at a rate of about 3.8 grams / minute. Aqueous ammonium hydroxide (1.03 g ammonium hydroxide dissolved in 33 mL water) was then added to the stirred reaction mixture over an additional 5 minutes. The reaction mixture was then stirred at 80°C for 15 minutes, and MMA (36.3 grams), 2-EHA (155.2 grams), 1,6HDDA ( 11.0 g) and AAEM (7.53 g). ...

example 3

[0077] Example 3: Latex with polystyrene seeds and MMA outer layer

[0078] A reaction flask with a volume of 2 L was equipped with a mechanical stirring device, a reflux condenser, a thermometer and an inlet, and contained water (870 mL), latex seed crystals (68 g of a 33% by weight polystyrene emulsion), and Rhodapon(R) SLS brand surfactant (15 grams of 33% by weight hydrated solution) was added with APS initiator (3 grams of initiator dissolved in 15 ml of water) at 80°C. After waiting 5 minutes, St (24.6 grams), 2-EHA (59.8 grams), MMA (125.5 grams), MAA (13 grams) and AAEM (25.7 grams) mixture. Aqueous ammonium hydroxide (1.03 g ammonium hydroxide dissolved in 33 mL water) was then added to the stirred reaction mixture over an additional 5 minutes. The reaction mixture was then stirred at 80° C. for 15 minutes, and St (36.3 grams), 2-EHA (155.2 grams), 1,6HDDA ( 11.0 g) and AAEM (7.53 g). After the addition was complete, the reaction mixture was stirred for 15 minut...

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

No PUM Login to View More

Abstract

Latex formulations which exhibit a reduced amount of yellowing when exposed to heat, aldehydes or ultraviolet light contain polyfunctional amines, reducing agents, and / or reduced levels of styrene.

Description

field of invention [0001] The present invention relates to non-yellowing latex formulations. In particular, the present invention relates to latex formulations that exhibit reduced yellowing when exposed to heat or aldehydes or ultraviolet light. Background of the invention [0002] Polymers prepared by the emulsion polymerization process have a wide variety of uses. For example, latexes produced by emulsion polymerization are useful in paints, varnishes, polishes, films, inks, clear coats, stains, varnishes, print coatings, and powder coatings. [0003] It has long been known that latex tends to visibly yellow when exposed to heat or aldehydes or light, especially UV light. Yellowing has long been addressed in polymer chemistry by adding bluing agents to yellowed polymers. However, this method is only a remedy in essence, and is not suitable for fundamentally solving this problem. [0004] Yellowing of latex components is a prominent problem in clearcoats, especially wh...

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 Patents(China)
IPC IPC(8): C08F285/00C08F265/00C08F257/00C08F2/44C08F257/02C08F265/04C08F291/00C08L51/00
CPCC08F257/02C08F265/04C08F285/00C08L51/003C08L2666/02
Inventor 格雷戈里·M·卡纳德詹姆斯·W·泰勒大卫·L·特鲁波
Owner BASF CORP
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