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公开(公告)号：US20200299527A1
公开(公告)日：2020-09-24
申请号：US16607257
申请日：2018-05-02
发明人： James K. Bardman , Jonathan DeRocher , Andrew Hejl , Antony K. Van Dyk , Lin Wang , Kimy Yeung
IPC分类号： C09D7/65 , C09D7/40 , C08F220/06 , C08F220/18 , C08F220/14 , C08F212/08 , C08F2/22 , C08L25/14 , C08K3/22
摘要： The present invention relates to a process for preparing a coatings composition with an open time additive comprising the steps of a) contacting an aqueous dispersion of alkali swellable polymer particles with a rheology modifier and a binder to form a coatings composition with a VOC of less than 50 g/L; and b) neutralizing the alkali swellable particles with a non-volatile base after or upon contact with the rheology modifier and the binder to form swelled multi-staged polymer particles; wherein the alkali swellable polymer particles comprise a shell having a Tg of not greater than 25° C. and an acid functionalized core; and wherein the core-to-shell ratio is in the range of from 1:3.2 to 1:10. The composition arising from the process of the present invention is useful for improving open time, especially for low VOC coatings applications.In another aspect the present invention relates to the preparation of the coatings composition with an open time additive comprising the steps of a) contacting the open time additive with a rheology modifier and a binder to form a coatings composition with a VOC of less than 50 g/L, then b) neutralizing the open time additive to form swelled multi-staged polymer particles, wherein the coatings composition with the open time additive exhibits less than a 50% increase in viscosity than the coating composition without the open time additive.
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公开(公告)号：US20180320007A1
公开(公告)日：2018-11-08
申请号：US15968939
申请日：2018-05-02
发明人： James Keith Bardman , Jonathan DeRocher , Andrew Hejl , Antony K. Van Dyk , Lin Wang , Kimy Yeung
IPC分类号： C09D7/40 , C09D133/06 , C09D7/65
CPC分类号： C09D7/70 , C08F2/26 , C08F265/02 , C08F265/06 , C08L2201/50 , C08L2201/52 , C08L2207/53 , C09D7/65 , C09D7/68 , C09D133/06 , C09D133/10 , C09D133/12 , C08F2220/1825 , C08F220/06 , C08F220/14 , C08L51/003
摘要： The present invention relates to a process for preparing a coatings composition with an open time additive comprising the steps of a) contacting an aqueous dispersion of alkali swellable polymer particles with a rheology modifier and a binder to form a coatings composition with a VOC of less than 50 g/L; and b) neutralizing the alkali swellable particles with a non-volatile base after or upon contact with the rheology modifier and the binder to form swelled multi-staged polymer particles; wherein the alkali swellable polymer particles comprise a shell having a Tg of not greater than 25° C. and an acid functionalized core; and wherein the core-to-shell ratio is in the range of from 1:3.2 to 1:10. The composition arising from the process of the present invention is useful for improving open time, especially for low VOC coatings applications.In another aspect the present invention relates to the preparation of the coatings composition with an open time additive comprising the steps of a) contacting the open time additive with a rheology modifier and a binder to form a coatings composition with a VOC of less than 50 g/L, then b) neutralizing the open time additive to form swelled multi-staged polymer particles, wherein the coatings composition with the open time additive exhibits less than a 50% increase in viscosity than the coating composition without the open time additive.
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公开(公告)号：US11155722B2
公开(公告)日：2021-10-26
申请号：US16607257
申请日：2018-05-02
发明人： James K. Bardman , Jonathan DeRocher , Andrew Hejl , Antony K. Van Dyk , Lin Wang , Kimy Yeung
IPC分类号： C09D7/65 , C09D7/40 , C09D133/06 , C08F265/02 , C08F265/06 , C09D133/10 , C09D133/12 , C08F2/26 , C08F220/18 , C08F2/22 , C08F212/08 , C08F220/06 , C08F220/14 , C08K3/22 , C08L25/14
摘要： The present invention relates to a process for preparing a coatings composition with an open time additive comprising the steps of a) contacting an aqueous dispersion of alkali swellable polymer particles with a rheology modifier and a binder to form a coatings composition with a VOC of less than 50 g/L; and b) neutralizing the alkali swellable particles with a non-volatile base after or upon contact with the rheology modifier and the binder to form swelled multi-staged polymer particles; wherein the alkali swellable polymer particles comprise a shell having a Tg of not greater than 25° C. and an acid functionalized core; and wherein the core-to-shell ratio is in the range of from 1:3.2 to 1:10. The composition arising from the process of the present invention is useful for improving open time, especially for low VOC coatings applications.
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公开(公告)号：US20170183535A1
公开(公告)日：2017-06-29
申请号：US15382908
申请日：2016-12-19
IPC分类号： C09D175/08 , C08G18/48 , C08G18/22 , C08G18/79
CPC分类号： C09D175/08 , C08G18/227 , C08G18/283 , C08G18/3228 , C08G18/4812 , C08G18/4833 , C08G18/6685 , C08G18/73 , C08G18/758 , C08G18/791 , C08G18/792 , C09D5/022 , C09D5/024 , C09D7/65
摘要： A hydrophilic polyurethane comprising polymerized units of: (a) a water-soluble polyol having hydroxyl functionality from two to four and a weight-average molecular weight from 800 to 16,000; and (b) an aliphatic polyisocyanate having isocyanate functionality from two to six; wherein polymerized ethylene oxide units comprise at least 85 wt % of said hydrophilic polyurethane; and wherein a product of weight fraction of polymerized ethylene oxide units and polyethylene oxide mean molecular weight is from 4,200 to 16,000.
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公开(公告)号：US11161986B2
公开(公告)日：2021-11-02
申请号：US16497475
申请日：2018-02-26
发明人： James K. Bardman , Jonathan DeRocher , Andrew Hejl , Anthony K. VanDyk , Lin Wang , Kimy Yeung
IPC分类号： C09D7/65 , C09D5/02 , C09D7/43 , C09D7/40 , C08J3/00 , C08J3/21 , C08L33/08 , C09D133/08 , C09D151/00
摘要： The present invention relates to a process comprising the step of contacting an aqueous dispersion of swelled polymer particles with a rheology modifier and a binder to form a coatings composition with a VOC of less than 50 g/L. The swelled polymer particles arise from neutralization of alkali swellable polymer particles having a high acid core content and a low Tg shell. The composition arising from the process of the present invention is useful for improving open time, especially for low VOC coatings applications.
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6.发明申请公开(公告)号：US20190202964A1
公开(公告)日：2019-07-04
申请号：US16309291
申请日：2017-06-27
发明人： David J. Brennan , Gregoire Cardoen , Jonathan DeRocher , John J. Rabasco , Antony K. Van Dyk , Kimy Yeung
IPC分类号： C08G18/28 , C08G18/48 , C08G18/64 , C09D175/04 , C09D5/02
CPC分类号： C08G18/283 , C08G18/227 , C08G18/3228 , C08G18/4812 , C08G18/4833 , C08G18/6484 , C08G18/6685 , C08G18/73 , C08G18/758 , C08G18/792 , C09D5/024 , C09D7/45 , C09D175/04
摘要： A composition comprising: (a) a hydrophilic polyurethane comprising polymerized units of: (i) a water-soluble polyol having hydroxyl functionality from two to four and a weight-average molecular weight from 800 to 16,000; and (ii) an aliphatic polyisocyanate having isocyanate functionality from two to six; wherein polymerized ethylene oxide units comprise at least 85 wt % of said hydrophilic polyurethane; and at least one of: (b) a saccharide having at least 5 hydroxyl groups and Mw from 300 to 4,000; (c) a dispersant polymer having Mw from 700 to 50,000 and from 10 to 55 wt % polymerized residues of C3-C6 carboxylic acid monomer and (d) a surfactant having HLB>11 and 12 to 100 polymerized units of ethylene oxide.
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公开(公告)号：US20190055422A1
公开(公告)日：2019-02-21
申请号：US16078866
申请日：2017-03-06
IPC分类号： C09D121/02 , C09D7/65
摘要： The present invention relates to a coating composition which is a stable aqueous dispersion of polymer particles and a phenyl glycidyl ether adduct of maltodextrin. The composition of the present invention is useful for improving open time in coatings formulations.
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公开(公告)号：US11198791B2
公开(公告)日：2021-12-14
申请号：US15382908
申请日：2016-12-19
IPC分类号： C09D175/08 , C09D7/65 , C08G18/22 , C08G18/28 , C08G18/32 , C08G18/48 , C08G18/66 , C08G18/73 , C08G18/75 , C08G18/79 , C09D5/02
摘要： A hydrophilic polyurethane comprising polymerized units of: (a) a water-soluble polyol having hydroxyl functionality from two to four and a weight-average molecular weight from 800 to 16,000; and (b) an aliphatic polyisocyanate having isocyanate functionality from two to six; wherein polymerized ethylene oxide units comprise at least 85 wt % of said hydrophilic polyurethane; and wherein a product of weight fraction of polymerized ethylene oxide units and polyethylene oxide mean molecular weight is from 4,200 to 16,000.
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公开(公告)号：US20210108089A1
公开(公告)日：2021-04-15
申请号：US16497475
申请日：2018-02-26
发明人： James K. Bardman , Jonathan DeRocher , Andrew Hejl , Anthony K. VanDyk , Lin Wang , Kimy Yeung
IPC分类号： C09D5/02 , C08L33/08 , C09D151/00 , C09D133/08 , C09D7/40 , C09D7/65 , C09D7/43 , C08J3/21 , C08J3/00
摘要： The present invention relates to a process comprising the step of contacting an aqueous dispersion of swelled polymer particles with a rheology modifier and a binder to form a coatings composition with a VOC of less than 50 g/L. The swelled polymer particles arise from neutralization of alkali swellable polymer particles having a high acid core content and a low Tg shell. The composition arising from the process of the present invention is useful for improving open time, especially for low VOC coatings applications.
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公开(公告)号：US10669444B2
公开(公告)日：2020-06-02
申请号：US16078866
申请日：2017-03-06
IPC分类号： C09D121/02 , C08B31/14 , C09D103/02 , C09D103/08 , C08G65/22 , C08G65/26 , C08B30/18 , C09D7/65
摘要： The present invention relates to a coating composition which is a stable aqueous dispersion of polymer particles and a phenyl glycidyl ether adduct of maltodextrin. The composition of the present invention is useful for improving open time in coatings formulations.
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