Abstract: The present invention describes a polyoxaester copolymer and blends thereof that may be used to produce hydrogels, surgical devices such as sutures, sutures with attached needles, molded devices, drug matrices, adhesives, sealants and the like. The invention also contemplates a process for producing these polyesters. The polyoxaester copolymers of the present invention are formed from a first divalent repeating unit of formula IA:
[—O—C(O)—R30—C(O)—] IA
a second divalent repeating unit of the formula IB:
[O—C(O)—C(R1)(R2)—O—R3—O—C(R′1)(R′2)—C(O)—] IB
and a third repeating unit selected from the group of formulas consisting of:
[—O—R4—]A, II
[—O—R5—C(O)—]B, III
([—O—R5—C(O)]P—O—)LG XI
and combinations thereof.
Abstract: Provided is a metal container with an interior coating material. The interior coating material includes a) at least one compound selected from acrylate resins and melamine resins, b) at least one halogenated polymer, c) a tint enhancing component including at least one compound selected from TiO2, SiO2, iron pigments, and BaSO4, and d) a solvent component. Processes for preparing the interior coating material are also provided. Further provided is a container closure coated on the inside wall with the above-escribed interior coating material, as well as a method for producing the container closures.
Type:
Grant
Filed:
December 6, 1999
Date of Patent:
April 17, 2001
Assignee:
PPG Industries Ohio, Inc.
Inventors:
Wilhelmina Andrea Marie Groen in't Woud, Johannes Schoots
Abstract: A composition that includes a polymer having mer units derived from at least one vinyl aralkyl compound, a transition metal catalyst, preferably a photoinitiator, and optionally a polymeric diluent is capable of scavenging oxygen and of being processed into articles with oxygen scavenging capabilities.
Abstract: An article, specifically an inkjet printhead, having electrical leads in an aqueous environment in which the leads are encapsulated in a thoroughly cured mixture of 88 parts bis-phenol A epoxy oligomer, 11 parts epoxy novolac oligomer, and 1 part triarylsulfonium hexafluoroantimonate salts. No special atmosphere is required during manufacture and the uncured mixture has a long pot life. The cured mixture has excellent resistance to an aqueous environment.
Abstract: Disclosed are a polyester mainly composed of an aromatic dicarboxylic acid as an acid component and an aliphatic diol as a diol component, wherein the content of an antimony element in the polyester is from 50 to 350 ppm, the number of metallic antimony particles having a diameter of 0.5 &mgr;m or more is 30,000 or more per 100 mg of polyester, the ratio of the number of fine particles having a diameter of 0.5 &mgr;m to less than 0.6 &mgr;m is 70% or more, and the L value in hue is 80 or more; a stretch blow molded product formed of the polyester; and a method for producing a polyester mainly composed of an aromatic dicarboxylic acid as an acid component and ethylene glycol as a diol component which comprises adding a preliminary mixed catalyst solution of an antimony compound and a trivalent phosphorus compound as a catalyst, the catalyst solution having a haze of 10% or less, at a stage showing an acid value of 1,000 eq/ton or less before initiation of melt polymerization.
Abstract: A tube product and improvement in the production of coating tubing, as most preferred, includes hot dip galvanize zinc coating of tubing, and before solidification of the zinc coating, clear coating of the tubing with organic polymer coating. The heat of the hot dip cures the clear coating, and the clear coating preserves a consistency and reflectivity of the zinc previously unseen in finished products. In additional preferred embodiments, organic polymer coatings are applied to zinc coated and uncoated tubing, and the organic polymer coatings are applied by electrostatic powder coating.