Supercharge Your Innovation With Domain-Expert AI Agents!

Grafted acrylic acid emulsion and redispersible latex powder and preparation method thereof

A technology of redispersing latex powder and acrylic emulsion, which is applied in the field of redispersible latex powder, can solve the problems of water resistance, poor stability, etc., and achieve the effect of improving water resistance and stability, long storage period and high solid content

Active Publication Date: 2012-10-24
JIANGSU NIGAO SCI & TECH
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when these technologies are used to prepare acrylic latex powder, it is necessary to add protective glue to protect the acrylic latex, so that it can be sprayed and dried smoothly, and the water resistance is affected, and the stability is relatively poor.

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

Embodiment 1

[0036] (1) Synthesis of grafted acrylic emulsion

[0037] Preparation of pre-emulsion: 30 parts of deionized water, 2 parts of dodecyl diphenyl ether disulfonic acid sodium salt, 2 parts of alkyl alcohol polyether type nonionic are stirred and dissolved in the pre-emulsification tank, and then stirred Next, add 1 part of N-methylolacrylamide, 2 parts of acrylic acid, 40 parts of methyl methacrylate, 40 parts of butyl acrylate, and 10 parts of isooctyl acrylate. After the addition, continue stirring for 30 minutes to obtain the pre- emulsion.

[0038] Preparation of initiator solution: 30 parts of deionized water, 0.4 part of ammonium persulfate, and 0.4 part of sodium bicarbonate were stirred and dissolved to obtain the initiator solution.

[0039] Grafting monomer composition: 3 parts of acrylonitrile, 5 parts of sodium p-styrene sulfonate, 5 parts of sodium methacrylic sulfonate.

[0040] The initiator solution required for the polymerization of the grafted monomer composi...

Embodiment 2

[0045] (1) Synthesis of grafted acrylic emulsion

[0046] Preparation of pre-emulsion: 30 parts of deionized water, 3 parts of dodecyl diphenyl ether disulfonic acid sodium salt, 2 parts of alkyl alcohol polyether type nonionic are stirred and dissolved in the pre-emulsification tank, and then stirred Next, add 2 parts of N-methylolacrylamide, 3 parts of methacrylic acid, 42 parts of methyl methacrylate, 45 parts of butyl acrylate, and 10 parts of isooctyl acrylate. After the addition, continue to stir for 30 minutes, that is to obtain a pre-emulsion.

[0047] Preparation of initiator solution: 30 parts of deionized water, 0.45 part of ammonium persulfate, and 0.4 part of sodium bicarbonate were stirred and dissolved to obtain the initiator solution.

[0048] Grafting monomer composition: 4 parts of acrylonitrile, 6 parts of sodium p-styrene sulfonate, 5 parts of sodium methacrylene sulfonate

[0049] The initiator solution required for the polymerization of the grafted mono...

Embodiment 3

[0054] (1) Synthesis of grafted acrylic emulsion

[0055] Preparation of pre-emulsion: 30 parts of deionized water, 3 parts of dodecyl diphenyl ether disulfonic acid sodium salt, 2 parts of alkyl alcohol polyether type nonionic are stirred and dissolved in the pre-emulsification tank, and then stirred Next, add 3 parts of N-methylolacrylamide, 4 parts of methacrylic acid, 45 parts of methyl methacrylate, 45 parts of butyl acrylate, and 15 parts of isooctyl acrylate. After the addition, continue to stir for 30 minutes, that is to obtain a pre-emulsion.

[0056] Preparation of initiator solution: 30 parts of deionized water, 0.5 part of ammonium persulfate, and 0.5 part of sodium bicarbonate were stirred and dissolved to obtain the initiator solution.

[0057] Grafting monomer composition: 5 parts of acrylonitrile, 7 parts of sodium p-styrene sulfonate, 7 parts of sodium methacrylene sulfonate

[0058] The initiator solution required for the polymerization of the grafted monom...

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

The invention discloses a grafted acrylic acid emulsion and redispersible latex powder and a preparation method thereof. The grafted acrylic acid emulsion is prepared by carrying out emulsion polymerization on deionized water, emulsifier, C4-C12 acrylic acid alkyl ester, C4 unsaturated acid monomer, acrylamide functional monomer, initiator, buffering agent and graft monomer composition. The acrylic acid redispersible latex powder is prepared by pumping the prepared grafted acrylic acid emulsion into a centrifugal spray drying tower by a peristaltic pump and simultaneously adding anticaking agent to the air-supply pipe, and controlling the air intake temperature between 180-200 DEG C and the air out temperature between 80-100 DEG C. According to the invention, the product of the present invention can be directly used for spray drying without adding protective colloid, the water proofness and stability of the product are obviously improved. The invention can be applied into the fields of insulation mortar, self-leveling mortar, tile bonding agent, putty, etc.

Description

technical field [0001] The invention relates to the field of redispersible latex powder, in particular to a graft type acrylic emulsion, redispersible latex powder and a preparation method. Background technique [0002] In my country, there are currently five mature forms of external wall thermal insulation systems, among which the expanded polystyrene board plastered external wall thermal insulation system occupies a dominant position in the market due to its convenient construction, good thermal insulation effect and excellent cost performance. Commercial mortar must be used in the external wall insulation system. The commercial mortar is divided into two types: single-component and double-component according to the supply form: (1) single-component mortar, that is, dry powder mortar in the usual sense, is a dry powder adhesive pre-mixed in the factory. Just add a certain proportion of mixing water according to the instructions for use, and stir evenly before use; (2) Two...

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): C08F265/04C08F212/14C08F228/02C08F220/46C08F2/30C08F2/24C08L51/06C08J3/12
Inventor 付强善金卫民王小兵蔡桂芝刘生如刘东
Owner JIANGSU NIGAO SCI & TECH
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