With Cellulose Ether Or Salt Thereof (i.e., Mixture Of (a) A Cellulose Ether Or Salt Thereof And (b) A Carbohydrate Material Which Is Other Than Cellulose Ether Or Salt Of The Same Etherifying Radical As In (a) Differing Only In The Degree Of Etherification) Patents (Class 106/162.8)
  • Patent number: 6306207
    Abstract: The present invention relates to compositions comprising essentially amorphous cellulose nanofibrils, at least one additive chosen from carboxycellulose with a degree of substitution of more than 0.95, a natural polysaccharide, a polyol, and optionally at least one co-additive, the content of additive and of optional co-additive being less than or equal to 30% by weight relative to the weight of nanofibrils and of additive and of optional co-additive. Similarly, a subject of the invention is a process for preparing such compositions, which consists in adding the additive and the optional co-additive to a suspension of essentially amorphous nanofibrils, and then in drying the suspension thus supplemented. The compositions obtained are readily redispersable and conserve their initial rheological properties.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: October 23, 2001
    Assignee: Rhodia Chimie
    Inventors: Robert Cantiani, Gilles Guerin, Alain Senechal, Isabelle Vincent, Joël Benchimol
  • Patent number: 6267808
    Abstract: A dry film coating composition used to make a bright white film coating for nutritional supplements, pharmaceutical tablets, and the like, comprises dextrose, an auxiliary film-former, and titanium dioxide. Optionally, but advantageously, the coating composition also ay include one or more of the following components: a plasticizer, a surfactant, a flow aid, and a preservative.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: July 31, 2001
    Assignee: BPSI Holdings, Inc.
    Inventors: Susan M. Grillo, Brian Korchok, Bruce Kinsey, Melanie Hartman, Stuart C. Porter, Rita Steffenino, George Reyes, Thomas J. Burke
  • Publication number: 20010004869
    Abstract: The present invention relates to compositions comprising essentially amorphous cellulose nanofibrils, at least one additive chosen from carboxycellulose with a degree of substitution of more than 0.95, a natural polysaccharide, a polyol, and optionally at least one co-additive, the content of additive and of optional co-additive being less than or equal to 30% by weight relative to the weight of nanofibrils and of additive and of optional co-additive. Similarly, a subject of the invention is a process for preparing such compositions, which consists in adding the additive and the optional co-additive to a suspension of essentially amorphous nanofibrils, and then in drying the suspension thus supplemented. The compositions obtained are readily redispersable and conserve their initial Theological properties.
    Type: Application
    Filed: February 14, 2001
    Publication date: June 28, 2001
    Inventors: Robert Cantiani, Gilles Guerin, Alain Senechal, Isabelle Vincent, Joel Benchimol
  • Patent number: 6241812
    Abstract: Acid-stable and cationic-compatible reticulated bacterial cellulose compositions, containing co-agents and/or cationic surfactants, that are useful rheological modifying agents and stabilizing agents for suspensions, emulsions and foams, and their methods of preparation are disclosed.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: June 5, 2001
    Assignee: Pharmacia Corporation
    Inventors: Barbara A. Smith, George T. Colegrove, Walter G. Rakitsky
  • Patent number: 6231657
    Abstract: The invention concerns compositions containing essentially amorphous cellulose nanofibrils, carboxyl cellulose with a degree of substitution not more than o.95 as additive, and optionally at least one co-additive, the content in additive and optional co-additive being less than 30 wt. % relative to the weight of nanofibrils and additive and optional co-additive. The invention also concerns a method for preparing such compositions, consisting in adding to a substantially amorphous nanofibril suspension, the additive and optionally the co-additive(s), then in drying the suspension thus additivated. The resulting compositions are easily redispersable and preserve all their rheological properties.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: May 15, 2001
    Assignee: Rhodia Chimie
    Inventors: Robert Cantiani, Gilles Guerin, Alain Senechal, Isabelle Vincent, Joël Benchimol
  • Patent number: 6224663
    Abstract: The present invention relates to compositions comprising essentially amorphous cellulose nanofibrils, at least one additive chosen from carboxycellulose with a degree of substitution of more than 0.95, a natural polysaccharide, a polyol, and optionally at least one co-additive, the content of additive and of optional co-additive being less than or equal to 30% by weight relative to the weight of nanofibrils and of additive and of optional co-additive. Similarly, a subject of the invention is a process for preparing such compositions, which consists in adding the additive and the optional co-additive to a suspension of essentially amorphous nanofibrils, and then in drying the suspension thus supplemented. The compositions obtained are redily redispersable and conserve their initial rheological properties.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: May 1, 2001
    Assignee: Rhodia Chimie
    Inventors: Robert Cantiani, Gilles Guerin, Alain Senechal, Isabelle Vincent, Joël Benchimol
  • Patent number: 6221152
    Abstract: The present invention comprises a stable hydrocolloid welan gum in which a hydrocolloid, preferably welan gum, is uniformly dispersed in a superplasticizer such as sulfonated naphthalene, sulfonated melamine, modified lignosulfate, their derivatives and mixtures thereof. This is then dispersed in a rheological control agent which is a microbially-produced cellulose fiber composition. The composition is rapidly hydratable and useful as a stabilizing additive in many cement and drilling fluid applications, insulation fluids and de-icer compositions.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: April 24, 2001
    Assignee: CP Kelco U.S., Inc.
    Inventors: Harold Dean Dial, Crawford Bryan Skaggs, Walter Gregory Rakitsky
  • Patent number: 6184272
    Abstract: A fiber-reinforced molded plastic part, a process for its manufacture and a use. The fiber-reinforced molded plastic part consists of a plastic matrix with natural fibers particularly arranged in a uniformly distributed manner in the plastic matrix. The plastic matrix has at least two mutually mixed polymers, of which one is a biopolymer and the other is a polymer which is at least largely resistant to biological stress.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: February 6, 2001
    Assignee: DiamlerChrysler AG
    Inventors: Thomas Foelster, Ralph Greiner, Dirk Schaefer