GB1604405A - Articles made from resin compositions containing aggregate materials eg glass - Google Patents
Articles made from resin compositions containing aggregate materials eg glass Download PDFInfo
- Publication number
- GB1604405A GB1604405A GB35499/77A GB3549977A GB1604405A GB 1604405 A GB1604405 A GB 1604405A GB 35499/77 A GB35499/77 A GB 35499/77A GB 3549977 A GB3549977 A GB 3549977A GB 1604405 A GB1604405 A GB 1604405A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- mixture
- article
- resin
- silane
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/40—Glass
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
Description
(54) IMPROVEMENTS IN AND RELATING TO ARTICLES MADE
FROM RESIN COMPOSITIONS CONTAINING AGGREGATE
MATERIALS, E.G. GLASS
(71) We, UNIVERSITY COLLEGE CARDIFF, of P.O. Box 78, Cardiff, CFi 1XL, and GLASS MANUFACTURERS FEDERATION, of 19, Portland
Place, London, W1N 4B11, a British University and a British Company respectively, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- This invention relates to articles made from a composition containing material in aggregate (as herein defined) form disposed within a matrix.
In recent years much concern has been expressed about the vast quantities of potentially useful materials discarded in domestic and industrial refuse. Such waste materials include vitreous materials, e.g. glass, porcelain and vitreous enamel waste; clay materials, e.g. china clay, brick waste and pumice; foundry waste, e.g. mould slag, mould sand and fuel ash, and slate waste. Nationally, it is generally accepted that between 1.5 and 2.0 million tons of glass are discarded in domestic refuse each year.
The glass is usually derived from bottles, jars etc., and where it forms part of a mixed refuse, it is separated therefrom using a special separation plant prior to ultimate disposal.
It is an object of this invention to turn waste glass and other materials such as those indicated above into a composition which can be usefully employed in the manufacture of structural, decorative and other articles, for example, tiles, curtain walling, decorative/structural panels, sanitary ware, pipes etc. The composition of the invention may be cast, moulded or otherwise formed into desired shapes. The composition may also be used, in plastic form, as floor covering which, when cured, is ground and subsequently polished.
According to this invention a method of preparing an article from a composition comprises:
(a) formulating a mixture of coarse, medium and fine aggregates (as herein
defined);
(b) pretreating the mixture (a) with a coupling agent;
(c) mixing the pretreated mixture (of (b)) with a curable resin and a curing
catalyst for curing the curable resin, and
(d) forming the resulting mixture (of (c)) into an article and curing or allowing
the same to cure.
Where the aggregate is glass, the curing temperature may be in the region of 105 C.
If desired, there may be added to the mixture (a) a further mixture comprising a weighed quantity of fine aggregate (as herein defined), pretreated with a coupling agent, polymer, polymerisation and/or colouring agents and a curing catalyst.
Throughout this specification, by coarse, medium and fine aggregates, we mean aggregates falling within the following size ranges, namely,
coarse: up to 3 BS mesh (0.75-0.25 inch or 19 to 6.35 mm);
medium: 3 to 12 BS mesh (6.35-1.40 mm), and
fine: greater than 12 BS mesh and preferably greater than 85 BS mesh (0.180mm=85 BS mesh).
In the case of glass aggregate, bottles (and other glass articles) may be crushed in a jaw crusher to obtain the coarse fraction of glass. Labels and metal rings need not be removed although caps and corks are preferably removed. Further the bottles need not be washed prior to crushing. The coarse fraction of approximately 0.75--0.25 inch (19 mms-6.35 mms) is, as mentioned above, screened from the jaw crusher product and, thereafter, a proportion of the coarse fraction may, by using for example a combination of disc mills, be ground still further to produce the medium and fine fractions.
The fine fraction as indicated above is preferably finer than 85 mesh (0.180 mms) and, if desired, material of industrial origin may be used as the fine fraction consisting for example of glass dust obtained from air conditioning filters. Occasionally this fine size range is modified or omitted to achieve particular surface effects.
Each fraction and each colour is preferably kept separate in order to give flexibility in formlllation, colour and colour effects.
Where the invention is used to make tiles, the tile mix is formulated from the aggregate fractions as defined above in the following approximate proportions by weight:
Coarse: 44.3%; Medium: 26.5%; and
Fine: 29.2% and this mix results in a void volume of approximately 0.220.24%.
A charge of glass to the above specification (suitably selected for the desired colour effect) is weighed out into a mixing vessel in preparation for the pretreatment of stage (b).
The preferred pretreatment or coupling agent is a trimethoxy silane marketed by
Dow Dorning Ltd. Another coupling agent which may be used is VOLAN (Registered
Trade Mark) - a chrome/acrylic complex made by Firth Chemical Company of
Crewe. The pretreatment solution contains typically 0.2% w/w of silane in water and the volume of treating solution is such as to give typically 0.5% w/w of silane to glass.
The pH of the solution is adjusted to within the range of 4-6 with the addition of acetic acid and stirred with the glass aggregate charge for 15 minutes. This stage may be prolonged as necessary since it serves the double purpose of pretreating the glass aggregate and removing the remains of labels. The aqueous solution is then decantedoff and the glass dried at a temperature of 10500.
The dried glass is then cooled or allowed to cool and mixed with a curable resin system. This charge gives typically a glass to resin ratio of 4.0 to 8.0.
Immediately prior to pouring into a mould, the catalyst and nromnter c}1'raes are added and thoroughly mixed with the glass/resin mix. A mix to this formulation prepared with a polyester as described later in Example 1 was found to have a compiesslve stress of 10925 Ibs./sq. inch.
Ideally, the mix is poured into the mould and thoroughly 'trowelled' with a palette knife to fill every corner, recess etc., of the mould, and to expel every air bubble from the bottom of the mould where the surface of the finished tile is formed. Carrying out this operation on a vibrating table greatly helps to produce a good surface and homogeneous product.
The mould determines the size and thickness of the finished tile, for example, open moulds measuring 7" x 7" x 5/8" made of silicone rubber and of 9" x 9" x 3/8" aluminium have been found very satisfactory. The mould is laid on a flat surface and it is the flat surface which gives the finished tile its surface quality.
A glass sheet, highly polished with an ordinary silicone-free wax polish such as
Mansion Wax (Trade Mark) gives a reasonable mould release and a very high surface gloss to the tile.
A glass sheet coated with paraffin wax affords good release properties and a flat matt surface which gives good wet skid resistance.
Exceptionally good mould release is however obtained by casting onto a thin sheet of "Teflon" (Registered Trade Mark) supported on a sheet of flat glass and gives rise to a medium glass surface.
The invention will now be illustrated with reference to the following examples:
EXAMPLE 1.
Glass obtained from a brewery was crushed and sizes as previously detailed and a tile mix was formulated as follows:
Coarse (green) 443g (44.6%) Medium (brown) 316g (31.8%)
Fine (white) 234g (23.6%)
This mixture was pretreated as described with a trimethoxy silane marketed under the code Z6032 by Dow Corning Ltd.
The dried, cooled glass was mixed with a polyester resin polymer comprising 80% w/w A2622 and 20% w/w A2593 made by BP Chemicals Ltd., the weight of the resin mix was 180g giving a glass/resin ratio of 5.52 (84.6% glass). To this mix was added 4 mls of a 60% methyl ethyl ketone peroxide (MEKP) catalyst and 2 mls of 0.6% cobalt naphthenate promoter. The whole mix was poured and trowelled into a 7" x 7" x 5/8" mould of isilcone rubber on a sheet of polished glass.
Curing required 2 hours at room temperature after which the tile was removed from the mould and post cured at 105 C for 2 hrs. This tile had a high gloss randomly patterned surface showing predominantly the colour of the coarse particles and a background colour due to the smaller size fractions.
EXAMPLE 2.
The glass was crushed and ground as in Example 1 and formulated as follows:
Coarse brown glass 310 g.
Green glass 133 g
Medium brown (3- 6 mesh) 158 g
green (6-12 mesh) 79 g
white (6-12 mesh) 79 g
Fine white (thro 85 mesh) 234 g
This mixture was pretreated with Dow Corning Ltd. silane Z6040.
The dried, cooled glass was mixed with an epoxy resin formulation (manufactured by Ciba-Geigy Ltd.) comprising 75 g GY250 resin, 43 g HY1341 GB hardener giving a glass/resin ratio of 8.3 (90.2% glass). Very thorough "trowelling" served to substantially remove all the air voids, and the tile had a very high gloss surface of considerable hardness when the mix was cast onto a glass supported 'Teflon' sheet.
EXAMPLE 3.
The glass was crushed and ground as before and formulated as follows:
Coarse 350 g white;
150 g brown;
Medium 300 g green; and
Fine 330 g white.
The fine fraction, previously pretreated with Dow Corning Ltd. silane Z6040 was premixed with a resin mix supplied by British Industrial Plastics Ltd. and comprising 198 g of 'Beetle' (Registered Trade Mark) W2 urea-formaldehyde resin and 22 g of
L5128 hardener. Pretreated coarse and medium fractions were then added and mixing completed.
The mix was trowelled into the mould on a waxed glass plate and allowed to cure out at room temperature. After 3-4 hrs. the tile was removed from the mould.
In this example, the tile as removed from the mould did not have an aesthetically pleasing surface and was diamond polished to remove a surface layer of resin and reveal the glass pattern beneath.
EXAMPLE 4.
Example 1 was repeated except that the formulation of glass and resin was changed slightly to provide a "sparkling" surface by the omission of the fine white glass dust.
The fine fraction was replaced by 12-60 mesh glass (1.40--0.250 mms) to give the following formulation:
Coarse 250 g white;
170 g brown; Medium 100 g white 3- 6 mesh;
100 g brown 3- 6 mesh; 120 g white 6-12 mesh; and
Fine 30 g white 12-25 mesh;
30 g white 25-60 mesh.
200 g polyester resin mix as in Example 1 giving a glass/resin ratio of 4.0 (80% glass).
This tile, as mentioned above, had a bright, sparkling highly reflective surface with pin points of reflection coming from the larger fine fraction.
Mixtures of these and other formulations can be cast into other than flat surface shapes in suitable moulds for producing, for example, bathroom and sanitary ware and fittings, kitchen furniture and working surfaces.
EXAMPLE 5.
The glass was crushed and ground as previously described and formulated as follows:
Coarse 99 g green;
42 g white;
Medium 42 g green;
42 g white;
Fine 93 g and the resulting aggregate mixture was pretreated with Dow Corning Ltd. silane
Z6032.
The dried, cooled glass was mixed with a polyester resin polymer comprising 80% w/w A 2622 and 20% w/w A 2593 made by BP Chemicals Ltd. The weight of resin mix was 65 g giving a glass/resin ratio of 4.89 (i.e. 83.0% glass).
To this mix was added 1.5 mls of 60% MEKP catalyst and 1.0 ml of cobalt 0.6% naphthenate promoter.
The mix was poured and trowelled into a 7" x 7" x 5/8" mould of silicone rubber on a sheet of wax polished glass. This quantity of mix left a space of 3/8 inch at the top of the mould and this was filled with a backing concrete mix comprising (in the order of mixing)
96 g water;
1.5 mls wetting agent;
100 g silica sand;
274 g Portland Cement, and
19 g Pilkingtons CemFIL (Registered Trade Mark) fibre.
The backing mix was poured and vibrated onto the uncured polyester/glass mix and 'trowelled' to provide a smooth flat surface.
The total curing time is determined by the concrete backing layer, and, in this example, the moulded mix was left to cure overnight in the mould, after which the complete tile was removed and cured for a further 24 hours in a water bath at 500 C.
The invention, therefore, includes an article when made in accordance with the foregoing description and including a backing layer. The backing layer may be selected for reinforcing purposes or it may be selected for economic reasons, namely, reducing the quantities and attendant costs of the resins, polymer, catalyst etc. The backing layer may, for example, be made from a compatible resin or polymer composition, or insulation material or concrete. The backing layer may, as desired, be reinforced using glass fibres, wire wool, metal turnings etc. In circumstances where it is required, for example, to decrease the thermal conductivity of an article, for example, a tile, the backing may include an insulating material. The insulating material may be in the form of a foam or the constituents of a foamable composition may be applied to the cured or uncured article (if tile) mix.
Tests carried out to ascertain the mechanical strength of the composites of glass and polyester resin according to the invention established that for a constant loading of glass (70 /5) in polyester (30%), both tensile stress and compressive stress exhibit a maximum in excess of those obtained for pure polyester resin when the grain size was in the range 44-85 mesh (0.355-0.180 mms.). Tests also indi cated that the pretreatment of the aggregate mixture of glass made a significant contribution to the increased tensile and compressive stresses.
Although specific reference has been made to the manufacture of tiles, pipes and sanitary ware, other articles may be moulded using the composition as described.
The use of glass aggregate for reinforcing or extending polymer resin produces a material which compares favourably with glass fibre reinforced plastics materials when subjected to compressive stress but unfavourably when subjected to tensile stress.
Glass aggregate particles and/or powders when compounded with resin possess a number of advantages, for example: 1. They give rise to composites as strong as the basic resin when due allowance is
made of particle size, glass pretreatment to improve the resin of glass bond, and
the relative ratios of glass/resin.
2. Working at glass to resin ratios in the range of 3.0 to 1.0 as against a glass fibre
to resin ratio in the range of 0.3 to 1.0 a considerable saving in resin for a given
application is achieved.
3. Use of the large glass aggregate fraction acts as a good exotherm adsorber which
allows thick sections to be case in a suitable mould rapidly and accurately without
fear of exothermic cracking.
4. Where the modest strengths of these composites are adequate, casting techniques are much less time consuming than the laborious laying up techniques of glass
fibre laminating.
5. Penetration of the composite by corrosive and other liquids is less likely with
particles than with fibres which propagate the ingress of moisture by so-called
"wicking" along their length which eventually gives rise to delamination. When
compared with fibres, particles are of short path length and are each surrounded
or encapsulated by a resin surface.
Pigments and fillers may be added to or milled onto glass powder to produce castings of uniform colour.
As mentioned previously, the glass aggregate is first pretreated with a silane surface treating agent to increase the resin to glass bonding and thereby enhance mechanical strength. Altematively a chromium/acrylic complex may be employed as the pretreating agent.
Mixing of the casting mixture is carried out in a conventional laboratory or kitchen-type mixer depending on the mix viscosity and batch size and the catalyst and the promoter are added into the mix immediately prior to casting.
The glass aggregate may of itself be coloured but, where the glass is clear and colouring is required, application of a colourant is preferably carried out after pretreatment with the coupling agent.
Suitable pigments which can be used include Monastral (Registered Trade
Mark) Fast Blue, Monolite (Registered Trade Mark) Red (I.C.I.); Cibanone (Registered Trade Mark) Mellow G.C.M.D., Chlorazol Fast Yellow B.S. (Ciba
Geigy) and Ferric Oxide and slate dust.
EXAMPLE 6.
Pretreatment of the aggregate for all aspects of the invention may be carried out by the following method:
The glass is weighed into a mixing vessel as for the aqueous treatment method previously described. 100 gms of glass of assorted sizes is tumbled with 5 gms of
Z 6032 (a silane composition manufactured by Dow Company) 40% solids in methanol, for 15 to 30 minutes. The glass is then dried at a temperature not exceeding lC5 C for 15 to 20 minutes. This glass is then ready for compounding with resins prior to casting or forming.
Alternatively, where colourant is to be added to the glass, 1000 gms of pretreated, dried and cooled glass can be mixed with not more than 10 gms of epoxy resin mix (e.g. Araldite (Registered Trade Mark) MY 753/HY956) or a polyester resin (e.g. BP A2622 or A2593) or any suitable low viscosity room temperature or ovencured resin system and a colouring pigment added to give a desired depth of colour.
The surface coated, coloured glass may then be finally cured in an oven.
Claims (11)
1. A method of preparing an article from a composition comprising:
(a) formulating a mixture of coarse, medium and fine aggregates (as herein
defined);
(b) pretreating the mixture (a) with a coupling agent;
(c) mixing the pretreated mixture (of (b)) with a curable resin and a curing
catalyst for curing the curable resin, and
(d) forming the resulting mixture (of (c)) into an article and curing or allowing
the same to cure.
2. A method according to claim 1 including adding to mixture (a) a further mixture comprising additional fine aggregate (as hereindefined) which is pretreated with a coupling agent, polymer, polymerisation and/or colouring agent, and a curing catalyst.
3. A method according to claim 1 wherein the mixture (a) comprises 44.3 wt %, 26.5 wt % and 29.2 wt % of coarse, medium and fine aggregate respectively.
4. A method according to claim 1, 2 or 3 wherein the coupling agent is a silane composition.
5. A method according to claim 4 wherein the silane composition is an aqueous solution of trimethoxy silane having a pH within the range 96.
6. A method according to claim 5 including an additional step (bl) wherein the silane treated mixture of step (b) is dried by heating and cooled or allowed to cool prior to carrying out step (c).
7. A method of making an article according to any preceding claim wherein step (d) is effected on a backing layer made from a compatible resin or polymer composition, or insulation material or concrete.
8. A method according to claim 7 wherein the backing layer is reinforced.
9. A method of making an article in accordance with any one of Examples 1 to 6.
10. An article when made in accordance with any one of claims 1 to 9.
11. An article substantially as hereinbefore described and with reference to any one of Examples 1 to 6.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB35499/77A GB1604405A (en) | 1978-05-31 | 1978-05-31 | Articles made from resin compositions containing aggregate materials eg glass |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB35499/77A GB1604405A (en) | 1978-05-31 | 1978-05-31 | Articles made from resin compositions containing aggregate materials eg glass |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1604405A true GB1604405A (en) | 1981-12-09 |
Family
ID=10378440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35499/77A Expired GB1604405A (en) | 1978-05-31 | 1978-05-31 | Articles made from resin compositions containing aggregate materials eg glass |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1604405A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4482656A (en) * | 1983-09-29 | 1984-11-13 | Battelle Development Corporation | Method for manufacturing a composition for coating substrates with an abrasion-resistant transparent and translucent film |
US4906676A (en) * | 1984-09-13 | 1990-03-06 | Mitsubishi Rayon Co., Ltd. | Resin composition containing fine silica particles therein |
ES2121529A1 (en) * | 1995-11-24 | 1998-11-16 | Baena Francisco Sugranes | Process for the manufacture of cement agglomerates incorporating crushed recycled glass and agglomerates so obtained. |
WO2001014277A3 (en) * | 1999-08-19 | 2001-08-23 | Andreas Schultze-Kraft | Surface finished concrete blocks, method for the production and use thereof |
WO2004003025A1 (en) * | 2002-06-27 | 2004-01-08 | Owens Corning | Odor free molding media having a polycarboxylic acid binder |
WO2004014815A1 (en) * | 2002-07-12 | 2004-02-19 | Andreas Schultze-Kraft | Solvent-free method for hydrophobic color coating of glass granulates, product therefrom and use thereof |
WO2004058659A1 (en) * | 2002-12-23 | 2004-07-15 | Tri E Holding, Llc | Methods and mixtures for coating glass waste |
EP1524249A1 (en) * | 2003-10-16 | 2005-04-20 | Global Engineering and Trade S.r.L. | Cement paint |
WO2011084274A1 (en) * | 2009-12-21 | 2011-07-14 | Reynolds Consumer Products, Inc. | Composite pavement structure |
US9464003B2 (en) | 2009-06-24 | 2016-10-11 | Basf Se | Method of producing a composite material using a mixing system |
US9856363B2 (en) | 2010-12-29 | 2018-01-02 | Basf Se | Colored composite pavement structure |
-
1978
- 1978-05-31 GB GB35499/77A patent/GB1604405A/en not_active Expired
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4482656A (en) * | 1983-09-29 | 1984-11-13 | Battelle Development Corporation | Method for manufacturing a composition for coating substrates with an abrasion-resistant transparent and translucent film |
US4906676A (en) * | 1984-09-13 | 1990-03-06 | Mitsubishi Rayon Co., Ltd. | Resin composition containing fine silica particles therein |
ES2121529A1 (en) * | 1995-11-24 | 1998-11-16 | Baena Francisco Sugranes | Process for the manufacture of cement agglomerates incorporating crushed recycled glass and agglomerates so obtained. |
WO2001014277A3 (en) * | 1999-08-19 | 2001-08-23 | Andreas Schultze-Kraft | Surface finished concrete blocks, method for the production and use thereof |
WO2004003025A1 (en) * | 2002-06-27 | 2004-01-08 | Owens Corning | Odor free molding media having a polycarboxylic acid binder |
WO2004014815A1 (en) * | 2002-07-12 | 2004-02-19 | Andreas Schultze-Kraft | Solvent-free method for hydrophobic color coating of glass granulates, product therefrom and use thereof |
WO2004058659A1 (en) * | 2002-12-23 | 2004-07-15 | Tri E Holding, Llc | Methods and mixtures for coating glass waste |
US6818300B2 (en) | 2002-12-23 | 2004-11-16 | Tri E Holding, Llc | Methods and mixtures for coating glass waste |
AU2004220711B2 (en) * | 2003-10-16 | 2008-07-10 | Global Engineering And Trade S.R.L. | Cement paint |
EP1524249A1 (en) * | 2003-10-16 | 2005-04-20 | Global Engineering and Trade S.r.L. | Cement paint |
US6972048B2 (en) | 2003-10-16 | 2005-12-06 | Global Engineering And Trade S.R.L. | Cement paint |
US9464003B2 (en) | 2009-06-24 | 2016-10-11 | Basf Se | Method of producing a composite material using a mixing system |
US10040721B2 (en) | 2009-06-24 | 2018-08-07 | Basf Se | Method of producing a composite material using a mixing system |
US9896381B2 (en) | 2009-06-24 | 2018-02-20 | Basf Se | Method of producing a composite material using a mixing system |
US9505931B2 (en) | 2009-12-21 | 2016-11-29 | Basf Se | Composite pavement structure |
KR101395451B1 (en) * | 2009-12-21 | 2014-05-14 | 바스프 에스이 | Composite pavement structure |
US9631088B2 (en) | 2009-12-21 | 2017-04-25 | Basf Se | Composite pavement structures |
US9850625B2 (en) | 2009-12-21 | 2017-12-26 | Basf Se | Composite pavement structures |
US8710135B2 (en) | 2009-12-21 | 2014-04-29 | Basf Se | Composite materials comprising aggregate and an elastomeric composition |
WO2011084274A1 (en) * | 2009-12-21 | 2011-07-14 | Reynolds Consumer Products, Inc. | Composite pavement structure |
US10253460B2 (en) | 2009-12-21 | 2019-04-09 | Basf Se | Composite pavement structure |
US10480128B2 (en) | 2009-12-21 | 2019-11-19 | Basf Se | Composite pavement structures |
US9856363B2 (en) | 2010-12-29 | 2018-01-02 | Basf Se | Colored composite pavement structure |
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Legal Events
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PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |