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1. 发明授权

US4634758A Process for preparing alkoxy-modified phenolic resole resins 失效
标题翻译：制备烷氧基改性酚醛树脂的方法
公开(公告)号：US4634758A
公开(公告)日：1987-01-06
申请号：US781568
申请日：1985-09-30
申请人： Robert A. Laitar , Eduardo Gomez
发明人： Robert A. Laitar , Eduardo Gomez
IPC分类号： B22C1/22 , C08G8/10 , C08G18/54 , C08G8/36
CPC分类号： C08G8/10 , B22C1/2273 , C08G18/542
摘要： A process for preparing an alkoxy-modified phenolic resole resin useful as the polyhydroxy component of a urethane binder composition. A phenol is reacted with a molar excess of an aldehyde in the presence of an alkaline catalyst and the resulting product is further reacted with a monohydric aliphatic alcohol under acidic conditions.
摘要翻译：一种制备用作氨基甲酸酯粘合剂组合物的多羟基组分的烷氧基改性酚醛树脂树脂的方法。在碱性催化剂的存在下，苯酚与摩尔过量的醛反应，并且所得产物在酸性条件下进一步与一元脂肪醇反应。

2. 发明授权

US4546124A Polyurethane binder compositions 失效
标题翻译：聚氨酯粘合剂组合物
公开(公告)号：US4546124A
公开(公告)日：1985-10-08
申请号：US660170
申请日：1984-10-12
申请人： Robert A. Laitar , Eduardo Gomez
发明人： Robert A. Laitar , Eduardo Gomez
IPC分类号： C08G18/00 , B22C1/22 , C08G8/10 , C08G18/54 , C09J175/00 , C09J175/04 , C08G18/06
CPC分类号： B22C1/2273 , C08G18/542 , C08G8/10
摘要： A foundry binder composition which provides foundry cores and molds of superior hot strength comprises a polyisocyanate, a polyhydroxy component and a catalyst. The polyhydroxy component is an alkoxy modified phenolic resole resin containing at least one alkoxy methylene group for every six phenolic nuclei in the resin.
摘要翻译：提供具有优异热强度的铸造芯和模具的铸造粘合剂组合物包括多异氰酸酯，多羟基组分和催化剂。多羟基成分是对于树脂中每六个酚醛核含有至少一个烷氧基亚甲基的烷氧基改性酚醛树脂。

3. 发明授权

US4848442A Resin binders for foundry sand cores and molds 失效
标题翻译：铸造砂芯和模具的树脂粘合剂
公开(公告)号：US4848442A
公开(公告)日：1989-07-18
申请号：US106024
申请日：1987-10-08
申请人： Raja Iyer , Rasik C. Shah , Robert A. Laitar
发明人： Raja Iyer , Rasik C. Shah , Robert A. Laitar
IPC分类号： B22C1/22 , C08G8/36 , C08L61/14
CPC分类号： C08G8/36 , B22C1/2253 , C08L61/14
摘要： An alkoxy-modified phenolic resole resin providing an improved binder for foundry cores and molds. The resin has predominantly ortho-ortho benzylic ether bridges joining the phenolic nuclei in the resin and at least one alkoxymethylene group for every 20 phenolic nuclei.
摘要翻译：烷氧基改性酚醛树脂树脂，为铸造芯和模具提供改进的粘合剂。该树脂主要是邻二苄基醚桥连接树脂中的酚核和每20个酚核的至少一个烷氧基亚甲基。

4. 发明授权

US06365646B1 Method to improve humidity resistance of phenolic urethane foundry binders 有权
标题翻译：提高酚醛聚氨酯铸造粘合剂耐湿性的方法
公开(公告)号：US06365646B1
公开(公告)日：2002-04-02
申请号：US09456363
申请日：1999-12-08
申请人： Robert A. Laitar , Brian K. Teeter , Kwok-tuen Tse , Leonid S. Zaretskiy
发明人： Robert A. Laitar , Brian K. Teeter , Kwok-tuen Tse , Leonid S. Zaretskiy
IPC分类号： B22C122
CPC分类号： B22C1/2273
摘要： An embodiment of the present invention provides a method for improving the tensile strength of foundry cores and molds. More particularly, an embodiment of the present invention provides an improved binder for foundry cores and molds that include a fluoride bearing acid in combination with an inorganic silicon compound. Alternately, the improved binder may include a fluoride bearing acid in combination with a boron compound. In a preferred embodiment, a modified part 1 binder component includes a combination of hydrofluoric acid and an inorganic silicon compound.
摘要翻译：本发明的一个实施方案提供了一种提高铸造芯和模具的拉伸强度的方法。更具体地，本发明的一个实施方案提供了一种用于铸造芯和模具的改进的粘合剂，其包括与无机硅化合物组合的带有氟化氢的酸。或者，改进的粘合剂可以包括与硼化合物组合的带氟化物的酸。在优选的实施方案中，改性部分1粘合剂组分包括氢氟酸和无机硅化合物的组合。

5. 发明授权

US5962567A Bound multi-component sand additive 失效
标题翻译：结合多组分砂添加剂
公开(公告)号：US5962567A
公开(公告)日：1999-10-05
申请号：US725548
申请日：1996-10-03
申请人： Michael M. Geoffrey , Robert A. Laitar
发明人： Michael M. Geoffrey , Robert A. Laitar
IPC分类号： B22C1/02 , B22C1/16 , B22C1/22 , C08K9/04 , B22C1/20
CPC分类号： B22C1/16 , B22C1/02 , B22C1/2273 , Y10T428/2982 , Y10T428/2993 , Y10T428/2998
摘要： Two or more sand additive particles are made to adhere to each other, using a binder. The finished product consists of free-flowing particles that are composed of the additive particles bound together by the binder. These bound additive particles may then be applied to sand, such as foundry sands, where, otherwise, multiple additions of additive might need to be made. The pH of the single additive particles can be controlled and separation of the additives due to different specific gravities can be avoided. Various mixtures of different additives are disclosed. Methods of controlling particle size of additive particles, tendency to generate dust, degrade tensile strength or control thermal expansion of foundry cores or molds by using bound additive particles are also disclosed.
摘要翻译：使用粘合剂将两种或更多种砂添加剂颗粒彼此粘合。成品由自由流动的颗粒组成，其由通过粘合剂粘合在一起的添加剂颗粒组成。然后将这些结合的添加剂颗粒施加到沙子上，例如铸造砂，否则可能需要多次添加添加剂。可以控制单一添加剂颗粒的pH，并且可以避免由于不同的比重而使添加剂分离。公开了不同添加剂的各种混合物。还公开了通过使用结合的添加剂颗粒来控制添加剂颗粒的尺寸，产生灰尘的趋势，降低铸造芯或模具的拉伸强度或控制热膨胀的方法。

6. 发明授权

US4514316A Polyisocyanate compositions useful for polyurethane binders 失效
标题翻译：用于聚氨酯粘合剂的多异氰酸酯组合物
公开(公告)号：US4514316A
公开(公告)日：1985-04-30
申请号：US559567
申请日：1983-12-08
申请人： Robert A. Laitar
发明人： Robert A. Laitar
IPC分类号： B22C1/20 , B22C1/22 , C08G18/08 , C09K3/00 , H05B33/00
CPC分类号： B22C1/2273 , B22C1/20 , B22C1/205 , C08G18/089
摘要： A polyisocyanate component useful in polyurethane binder compositions is provided. The polyisocyanate component incorporates organic phosphorous compounds that impart longer bench life to the binders making them more useful for prepraring moldable compositions such as foundry cores and molds.
摘要翻译：提供了可用于聚氨酯粘合剂组合物的多异氰酸酯组分。多异氰酸酯组分引入有机磷化合物，其赋予粘合剂更长的使用寿命，使得它们对于预制可模制组合物如铸造芯和模具更有用。

7. 发明授权

US5189079A Low free formaldehyde phenolic polyol formulation 失效
标题翻译：低免费甲醛酚醛聚合物配方
公开(公告)号：US5189079A
公开(公告)日：1993-02-23
申请号：US714267
申请日：1991-06-12
申请人： Michael M. Geoffrey , Robert A. Laitar
发明人： Michael M. Geoffrey , Robert A. Laitar
IPC分类号： B22C1/22 , C08G8/10 , C08G18/54
CPC分类号： B22C1/2273 , C08G18/542 , C08G8/10
摘要： A resin is prepared by the reaction of a phenol, an aldehyde and an aliphatic hydroxy compound containing two or more hydroxy groups per molecule in the presence of a divalent metal ion catalyst. These resins react with polyisocyanates to form polyurethanes that are useful binders for foundry cores and molds.

8. 发明授权

US4862948A Phenolic resin adhesive pastes, assemblies prepared therefrom, and processes for preparing cast metal articles using these pastes 失效
标题翻译：酚醛树脂粘合剂浆料，由其制备的组件，以及使用这些浆料制备铸造金属制品的方法
公开(公告)号：US4862948A
公开(公告)日：1989-09-05
申请号：US159761
申请日：1988-02-24
申请人： Robert A. Laitar
发明人： Robert A. Laitar
IPC分类号： B22C1/22 , C08K5/00 , C08K5/09 , C09J161/06
CPC分类号： C09J161/06 , C08K5/0025
摘要： An adhesive paste for adhering two or more objects, a composite assembly comprising two or more elements bonded by such paste, and a process for preparing cast metal articles using such paste are provided. The adhesive paste comprises an aqueous solution of a specific alkali phenol-formaldehyde resin and a hardener for that resin, wherein the paste prepared by mixing the resin and hardener has a viscosity, as mixed, in the range of about 1,000 cps to about 15,000 cps. The composite assembly comprises at least two separate elements bonded by the adhesive paste of the invention. The process uses a mold or core assembly having at least two separate elements. The elements are bonded by applying a coating of the paste of the invention to a surface which is to be bonded to a surface of a different element; placing the surfaces in confronting, engaging relationship and allowing an adhesive bond to form; introducing molten metal into the mold assembly or around the core assembly; allowing the molten metal to harden; and removing the bonded mold or core assembly.

9. 发明授权

US4723592A Process for preparing foundry cores and molds 失效
标题翻译：铸造芯和模具的制备工艺
公开(公告)号：US4723592A
公开(公告)日：1988-02-09
申请号：US909196
申请日：1986-09-19
申请人： Robert A. Laitar , Eduardo Gmez
发明人： Robert A. Laitar , Eduardo Gmez
IPC分类号： B22C1/22 , C08G8/10 , C08G18/54 , C08G18/06 , C08G8/36
CPC分类号： B22C1/2273 , C08G18/542 , C08G8/10
摘要： A process for preparing an alkoxy-modified phenolic resole resin useful as the polyhydroxy component of a urethane binder composition. A phenol is reacted with a molar excess of an aldehyde in the presence of an alkaline catalyst and the resulting product is further reacted with a monohydric aliphatic alcohol under acidic conditions.
摘要翻译：一种制备用作氨基甲酸酯粘合剂组合物的多羟基组分的烷氧基改性酚醛树脂树脂的方法。在碱性催化剂的存在下，苯酚与摩尔过量的醛反应，并且所得产物在酸性条件下进一步与一元脂肪醇反应。

10. 发明授权

US4698377A Binder compositions containing phenolic resins and esters of alkoxy acids 失效
标题翻译：含有酚醛树脂和烷氧基酸酯的粘合剂组合物
公开(公告)号：US4698377A
公开(公告)日：1987-10-06
申请号：US911866
申请日：1986-09-26
申请人： Robert A. Laitar
发明人： Robert A. Laitar
IPC分类号： B22C1/22 , C08G18/08 , C08G18/54 , C08L61/04 , C08L61/06 , C08L75/00 , C08L75/04 , C08K5/10 , C08L61/10
CPC分类号： C08G18/0852 , B22C1/2253 , B22C1/2273 , C08G18/542
摘要： Esters of alkoxy acids, particularly those of 3-alkoxypropionic acids are used as part or all of the polar solvent in solvent systems for binder compositions containing phenolic resins and polyisocyanates.

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