CN1325418A - Curing of resins - Google Patents

Curing of resins Download PDF

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Publication number
CN1325418A
CN1325418A CN 99813045 CN99813045A CN1325418A CN 1325418 A CN1325418 A CN 1325418A CN 99813045 CN99813045 CN 99813045 CN 99813045 A CN99813045 A CN 99813045A CN 1325418 A CN1325418 A CN 1325418A
Authority
CN
China
Prior art keywords
resin
catalyzer
protection
merchandising
called
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 99813045
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Chinese (zh)
Inventor
D·M·巴特斯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHEMCOLLOIDS Ltd
Original Assignee
CHEMCOLLOIDS Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GBGB9819815.3A external-priority patent/GB9819815D0/en
Application filed by CHEMCOLLOIDS Ltd filed Critical CHEMCOLLOIDS Ltd
Publication of CN1325418A publication Critical patent/CN1325418A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/0008Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0025Crosslinking or vulcanising agents; including accelerators
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00Processes of treating or compounding macromolecular substances
    • C08J3/24Crosslinking, e.g. vulcanising, of macromolecules
    • C08J3/241Preventing premature crosslinking by physical separation of components, e.g. encapsulation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00Use of pretreated ingredients
    • C08K9/10Encapsulated ingredients
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00Use of pretreated ingredients
    • C08K9/12Adsorbed ingredients, e.g. ingredients on carriers

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

A method of manufacturing a product comprising at least two parts includes the steps of coating one of the parts at least partially with a resin having a trapped catalyst distributed therein, placing the parts together with the resin therebetween and releasing the catalyst into the resin to initiate curing at the desired time. The catalyst may be trapped either by encapsulation or by absorption/adsorption into the structure of a suitable substrate such as almond shell. The catalyst may be an organic peroxide, formic acid or toluene sulphonic acid. An accelerator may be used to accelerate curing.

Description

The curing of resin
The present invention relates to a kind of modified resin of controlling the method for resin solidification and this control being provided.The present invention also comprises the application and the application of described resin in production of articles of described method.
For example in plywood production, independent plank layer is coated resin, force together and heat, to solidify this resin.Required time that is heating and curing will greatly be reduced production process.Can reduce set time by mixed catalyst in resin, but this can disturb production process itself, begin before the use of resin or in the use to solidify as meeting.
One aspect of the present invention provides a kind of method of cured resin, comprise when catalyzer discharges in the resin to cause when solidifying it is caught, mixes the catalyzer and the described resin of being caught, and discharge this catalyzer when needed and enter in the resin and solidify to cause.
Another aspect of the present invention provides a kind of a kind of method that comprises the product of two parts at least for preparing, and is included in the local at least step of coating a kind of resin on the part wherein, has been distributed with a kind of catalyzer of catching in this resin.Two portions are put together occupy in the middle of them described resin, and discharges described catalyzer solidify to cause in needs.
The present invention also comprises with the product of method for preparing and the resin that is distributed with catalyzer that uses in aforesaid method.
Can be by catalyzer being sealed or adsorption/absorption and it is captured in the structure of suitable matrix (as Pericarppium Armeniacae Amarum).
Described resin can be any of following vibrin: vinyl ester resin, resol, Resins, epoxy, acrylic resin, trimeric cyanamide/urea-formaldehyde resin, resol
Described catalyzer can be any suitable catalyzer, as: organo-peroxide, dibenzoyl peroxide for example, methylethyl ketone peroxide, cumene hydroperoxide, acetylacetone peroxide (merchandising is called Triganox 44B), TBPB tertiary butyl perbenzoate (merchandising is called TriganoxC), the tertiary butyl-2-ethylhexanoate (merchandising is called Triganox 21), t-butyl peroxy-3,5,5-tri-methyl hexanoic acid ester (merchandising is called Triganox42s), cumene hydroperoxide (merchandising is called Triganox K-80), two (4-tert-butylcyclohexyl percarbonic acid hydrogen ester (merchandising is called Perkadox 16)); Amine catalyst, for example diethyl tetramine, triethylamine isocyanic ester, boron trifluoride; UV-curing catalysts, alkyl carbonate, for example propylene and vinyl carbonate; Inorganic and organic acid is as formic acid, toluenesulphonic acids or sulfuric acid.
Described encapsulating material can be following any: gelatin, thermosetting resin, fats, paraffin, thermoplastics, polymkeric substance or silane compound or be any of the encapsulating material described in the common unsettled international application of WO98/26865 in the applicant's publication No..
Also can use accelerator as cobalt octoate (merchandising is called NL-49-P), diethyl-aniline (merchandising is called NL-64-10P), ammonium sulfate or ammonium chloride.
Described seal or the big I of coated particle in 0.5 to 1000 micron scope.
To describe embodiment of the present invention in detail by embodiment now.
In first example approach, relate to the production of glued board, on laminated wood, coat resin, laminate is stacked together and pressurizes impel their together bonding and/or heating to make resin solidification make the laminate strong binding together by being clipped in resin between adjacent layers.Must apply the quite a long time in the pressurization of routine and heating production method, for example several minutes has increased manufacturing time and manufacturing expense.According to the present invention, catalyst distribution is in whole described resin.Described catalyzer can be a propylene carbonate, vinyl carbonate or other catalyzer that is fit to, and it causes and solidifies described resin with plank between bonding successive layers.Yet,, will be difficult to or can not be satisfactorily or/and described effectively production process if solidify to cause too early or carry out too soon.For example,, can not easily be coated with laminate if carry out when laminate solidifies during at coating resin, and, even coated, the bond strength between laminate is also had adverse influence.
In order to overcome this shortcoming that may exist, come that it is caused solidified in the resin and discharge and control by sealing described catalyzer.Obtain like this to seal by the catalyst microcapsule that in the presence of encapsulating material, goes out to be coated with encapsulating material with the described Catalyst Production of ultrasonic wave radiation.Although these resin capsule of sealing are distributed in the whole resin, described coating is kept apart catalyzer and resin.In this case, resin can be resembled on the laminate that the description of front is applied to, can not begin, therefore will can not influence this process and discharge described catalyzer up to these breakage of particles and enter in the resin but solidify.Can cause producing by the described capsule of ultrasonic wave radiation or heating or some other appropriate means and break.
In a kind of encapsulating method as selection, catalyzer is adsorbed on a kind of particle surface of inertial base, and described particle is using ultrasound wave radiation coating packaged material once more.The coated particle size generally can be the 0.5-1000 micron in both cases.
Described catalyzer can be any of following material, or their mixture: organo-peroxide, as dibenzoyl peroxide, methylethyl ketone peroxide, cumene hydroperoxide, acetylacetone peroxide (merchandising is called Triganox 44B), TBPB tertiary butyl perbenzoate (merchandising is called TriganoxC), the tertiary butyl-2-ethylhexanoate (merchandising is called Triganox 21), t-butyl peroxy-3,5,5-tri-methyl hexanoic acid ester (merchandising is called Triganox42s), cumene hydroperoxide (merchandising is called Triganox K-80), two (4-tert-butylcyclohexyl percarbonic acid hydrogen esters (merchandising is called Perkadox 16); Amine catalyst, for example diethyl tetramine, triethylamine isocyanic ester, boron trifluoride; UV-curing catalysts, alkyl carbonate, for example propylene and vinyl carbonate; Inorganic and organic acid is as formic acid, toluenesulphonic acids or sulfuric acid.
Also can use accelerator as cobalt octoate (merchandising is called NL-49-P), diethyl-aniline (merchandising is called NL-64-10P).
Described encapsulating material can be following any: gelatin, thermosetting resin, fats, paraffin, thermoplastics, polymkeric substance or silane compound or be any of the encapsulating material described in the common unsettled international application of WO98/26865 in the applicant's publication No..
Described resin can be any of following resin or their any mixture: vibrin, vinyl ester resin, resol, Resins, epoxy, acrylic resin, trimeric cyanamide/urea-formaldehyde resin, resol.
In another example, catalyzer is to catch by absorbing in the suitable matrix rather than as previously described absorption.A kind of suitable matrix is a Pericarppium Armeniacae Amarum, it have help absorbing/adsorptive catalyst enters the surface in its vesicular structure.Though can use other catalyzer and resin (for example as describe in detail above), preferred described catalyzer is a formic acid, described resin is Melamine/urea-formaldehyde resin.
The method of producing Pericarppium Armeniacae Amarum formic acid/toluenesulphonic acids catalystic material is as follows:
ⅰ) at first with described formic acid/toluenesulphonic acids dissolution/go in the acetone.Acetone enters the carrier solvent of the vesicular structure of Pericarppium Armeniacae Amarum as described acid catalyst.
ⅱ) then Pericarppium Armeniacae Amarum is added in described acid/acetone mixture.
ⅲ) with described acid/acetone/Pericarppium Armeniacae Amarum mixture 20kHz, 400 watts ultrasonic fault detection 3-5 minute up to described acetone/acid absorb/adsorb to advance in the described Pericarppium Armeniacae Amarum structure.Phenomenon by the obvious thickening of described mixture can easily be observed this process.Using a reason of solvent is for ultrasonic energy is worked effectively to very firm Pericarppium Armeniacae Amarum.Require excessive liquid (being acetone) to produce air pocket.When cavitation bubble is broken, produced a large amount of energy sources/shockwave, be exactly that this energy orders about described liquid mixture and enters into described Pericarppium Armeniacae Amarum structure.
ⅳ) described acetone solvent is removed from slurry mixture, only stayed described acid catalyst and be embedded in the described Pericarppium Armeniacae Amarum by drying means.Can use condenser that described acetone is removed and recycled.Described Pericarppium Armeniacae Amarum/acid catalyst product be a kind of can quite free-pouring powder, it can easily be distributed in the resin.Use acetone to be as solvent because:
A) it has good solubility property.For example, Catalyzed by p-Toluenesulfonic Acid agent (PTSA, pressed powder) needs to be dissolved into acetone before entering into described Pericarppium Armeniacae Amarum being ordered about.
B) it has very low boiling point, and this helps it and removes in the cryodrying process.When using formic acid, this is unusual important characteristic, because this catalyzer has lower boiling point, if therefore use high drying temperature, formic acid also can be removed.
C) in described sonication process, exist acetone to keep low-down temperature (specific heat capacity characteristic) to reduce or eliminate the vaporization problem.
When described Pericarppium Armeniacae Amarum/acid catalyst is used resin dispersion, the molecule of resin too big so that they can not be easy to or enter soon in the described Pericarppium Armeniacae Amarum, therefore can not enter be embedded in structure in acid catalyst contact.Thereby can not begin the curing of described resin.Activate described acid catalyst by adding heat energy.This will cause described structure to expand and open making described resin near described catalyzer.It should be noted that this is not a kind of wrapper technology and does not use coating.Yet, if the higher package stability of final user/application requiring can apply coating.
Should be understood that above only is by embodiment embodiment of the present invention to be described, and under the situation that does not depart from scope of the present invention many variants can be arranged.For example, method of the present invention may be used in the manufacturing of any product, wherein with coating of a part or many parts and/or dipping curable resin, makes described each several part to be fixed together or as the part of production process.Felt or glass fibre can become desired shape also subsequently with described resin solidification with curable resin dipping of the present invention.Can adopt the resin prepreg stain material that uses in dirty production process, these matrix materials can be used in the following general field:
I) ship structure,
II) automotive industry-as inner/outer parts and main body panel,
III) train/aircraft structure-as inner/outer parts and main body panel,
IV) coastal waters boats and ships/field drilling is used,
V) building structure-wall (inner/outer), the roof,
VI) homely article,
VII) top coat,
VIII) flame-retardant foam body/coating/matrix material,
IX) tackiness agent of printing and paper industry,
X) tackiness agent of foundary industry use,
XI) winding filament,
XII) plastics extrusion molding,
The X III) tackiness agent,
The X IV) MDF/ shaving board,
The X V) Bulk Molding Compound,
The X VI) preimpregnation product,
The X VII) is used in the tackiness agent that uses in the concrete application of building industry.

Claims (16)

1. the method for cured resin, this method comprises the steps: capture catalyst, will cause curing when described catalyzer is discharged in the described resin; Mix described catalyzer of catching and described resin and in needs, discharge described catalyzer and in described resin, cause curing.
2. prepare a method that comprises the product of two parts at least, this method comprises the steps: upward a kind of resin of the local at least coating of a part therein, be distributed with captive catalyzer in this resin, each several part is put together, described resin clip discharges catalyzer and cause curing in described resin between them in needs.
3. claim 1 or 2 methods required for protection, wherein said catalyzer is to catch by sealing.
4. claim 3 method required for protection, wherein said encapsulating substance comprises one or more following substances:
Gelatin, thermosetting resin, fats, paraffin, thermoplastics, polymkeric substance or silane compound or be any in the disclosed encapsulating material in the international application of WO98/26865 in the applicant's publication No..
5. claim 1 or 2 method, wherein said catalyzer is to catch by absorption/absorption.
6. claim 5 method required for protection, wherein said catalyzer is hunted down by absorption/absorption and enters into the surface of Pericarppium Armeniacae Amarum.
7. claim 1 to 6 method required for protection, wherein said resin comprises one or more following vibrin: vinyl ester resin, resol, Resins, epoxy, acrylic resin, trimeric cyanamide/urea-formaldehyde resin, resol.
8. each of front claim method required for protection, wherein said catalyzer is a kind of organo-peroxide.
9. each of claim 1 to 7 method required for protection, wherein said catalyzer comprises one or more following substances: organo-peroxide, as dibenzoyl peroxide, methylethyl ketone peroxide, cumene hydroperoxide, acetylacetone peroxide (merchandising is called Triganox 44B), TBPB tertiary butyl perbenzoate (merchandising is called Triganox C), the tertiary butyl-2-ethylhexanoate (merchandising is called Triganox21), t-butyl peroxy-3,5,5-tri-methyl hexanoic acid ester (merchandising is called Triganox 42s), cumene hydroperoxide (merchandising is called Triganox K-80), two (4-tert-butylcyclohexyl peroxocarbonates (merchandising is called Perkadox 16); Amine catalyst, for example diethyl tetramine, triethylamine isocyanic ester, boron trifluoride; UV-curing catalysts, alkyl carbonate, for example propylene and vinyl carbonate; Inorganic and organic acid is as formic acid, toluenesulphonic acids or sulfuric acid.
10. catch the method for formic acid catalyzer in the Pericarppium Armeniacae Amarum, comprise the steps: formic acid dissolving or be distributed in the acetone, add Pericarppium Armeniacae Amarum in described acid/acetone mixture and with the described mixture of sonication up to described acetone and the mixt be absorbed/adsorb to advance in the described Pericarppium Armeniacae Amarum structure.
11. catch the method for toluenesulphonic acids catalyzer in the Pericarppium Armeniacae Amarum, comprise the steps: toluenesulphonic acids dissolving or be distributed in the acetone, add Pericarppium Armeniacae Amarum in described acid/acetone mixture and with the described mixture of sonication up to described pyruvic acid mixture be absorbed/adsorb to advance in the described Pericarppium Armeniacae Amarum structure.
12. claim 10 or 11 catching methods required for protection, wherein said acid/acetone mixture use the ultrasonication of 400 watts of 20kHz to survey 3 to 5 minutes.
13. the method for cured resin comprises the steps: capture catalyst, will cause curing when described catalyzer is discharged in the described resin; Mix described catalyzer of catching and described resin and discharge described catalyzer in needs and cause curing in described resin, wherein said catalyzer is caught by claim 10,11 or 12 methods required for protection.
14. claim 1 to 9 or 13 methods required for protection have wherein used a kind of accelerator to quicken to solidify.
15. claim 14 method required for protection, wherein said accelerator are cobalt octoate (merchandising is called NL-49-P), diethyl-aniline (merchandising is called NL-64-10P), ammonium sulfate or ammonium chloride.
16. product according to the method manufacturing required for protection of front claim.
CN 99813045 1998-09-12 1999-09-10 Curing of resins Pending CN1325418A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB9819815.3A GB9819815D0 (en) 1998-09-12 1998-09-12 Curing of resins
GB9909763.6 1999-04-29
GBGB9909763.6A GB9909763D0 (en) 1998-09-12 1999-04-29 Cluring of resins
GB9819815.3 1999-04-29

Publications (1)

Publication Number Publication Date
CN1325418A true CN1325418A (en) 2001-12-05

Family

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Application Number Title Priority Date Filing Date
CN 99813045 Pending CN1325418A (en) 1998-09-12 1999-09-10 Curing of resins

Country Status (8)

Country Link
EP (1) EP1112303A2 (en)
JP (1) JP2002524634A (en)
CN (1) CN1325418A (en)
AU (1) AU5870799A (en)
CA (1) CA2343392A1 (en)
GB (1) GB9909763D0 (en)
NO (1) NO20011212L (en)
WO (1) WO2000015694A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111019554A (en) * 2019-12-23 2020-04-17 天津环球磁卡股份有限公司 Curing resin regulator, bi-component epoxy system adhesive and preparation method thereof

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009046251A1 (en) 2009-10-30 2011-05-19 Evonik Röhm Gmbh Reactive 1-component road markings
FR2953524B1 (en) * 2009-12-03 2012-12-14 Arkema France HIGH SPEED CROSSLINKING SYSTEM
WO2012148629A1 (en) 2011-03-31 2012-11-01 Ocv Intellectual Capital, Llc Microencapsulated curing agent
JP5677922B2 (en) * 2011-09-27 2015-02-25 積水化学工業株式会社 Curing agent and / or curing accelerator encapsulating capsule, and thermosetting resin composition
EP2788406A1 (en) 2011-12-08 2014-10-15 OCV Intellectual Capital, LLC Fiber reinforced resin molding compound and manufacturing method for fiber reinforced resin molded article therefrom
JP5964085B2 (en) * 2012-02-13 2016-08-03 株式会社松風 Organic peroxide-containing composite fine particles
US20150132592A1 (en) * 2013-11-08 2015-05-14 Ppg Industries Ohio, Inc. Curable film-forming compositions comprising catalyst associated with a carrier and methods for coating a substrate
US11186528B2 (en) 2015-07-07 2021-11-30 Bae Systems Plc PBX composition
ES2760908T3 (en) * 2015-07-07 2020-05-18 Bae Systems Plc Molten explosive composition
EP3115348A1 (en) * 2015-07-07 2017-01-11 BAE Systems PLC Cast explosive composition

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3036980A (en) * 1956-12-31 1962-05-29 Union Carbide Corp Rubber composition containing zeolitic molecular sieve and process for curing
GB1029732A (en) * 1961-09-29 1966-05-18 Union Carbide Corp Improved release of agents from adsorbate-containing molecular sieves
JPS60168642A (en) * 1984-02-14 1985-09-02 呉羽化学工業株式会社 Manufacture of laminated film
US4808639A (en) * 1986-07-16 1989-02-28 Production Previews, Inc. Liquid curable adhesive composition comprising a polyester resin and a microencapsulated peroxide curing agent
GB9623878D0 (en) * 1996-11-15 1997-01-08 Marlit Ltd Bonding materials
GB9626152D0 (en) * 1996-12-17 1997-02-05 Cehmcolloids Ltd Encapsulation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111019554A (en) * 2019-12-23 2020-04-17 天津环球磁卡股份有限公司 Curing resin regulator, bi-component epoxy system adhesive and preparation method thereof

Also Published As

Publication number Publication date
EP1112303A2 (en) 2001-07-04
GB9909763D0 (en) 1999-06-23
NO20011212D0 (en) 2001-03-09
NO20011212L (en) 2001-03-09
CA2343392A1 (en) 2000-03-23
AU5870799A (en) 2000-04-03
WO2000015694A3 (en) 2000-07-13
WO2000015694A2 (en) 2000-03-23
JP2002524634A (en) 2002-08-06

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